diff --git a/fftw_benchmark/Makefile b/fftw_benchmark/Makefile new file mode 100644 index 0000000..5bc17a3 --- /dev/null +++ b/fftw_benchmark/Makefile @@ -0,0 +1,29 @@ +#=============================================================================== +# Makefile for Lorenz '63 model used for investigating half-precision support on +# Fugaku +# +# ECMWF/RIKEN-CCS +#=============================================================================== + +# Set compiler to Fujitsu if not already set +ifeq ($(FORTCOMP),) +FORTCOMP := frtpx +endif + +ifeq ($(FORTOPT),) +FORTOPT := "-Kfast" +endif + +# Define main target +main: main.o + $(FORTCOMP) $(FORTOPT) $(FFTWF_LIB) -o $@ $^ + +# Define generic target for Fortran 90 +%.o: %.F90 + $(FORTCOMP) $(FORTOPT) $(FFTWF_LIB) -c $< -o $(basename $<).o + +# Define clean task +.PHONY: clean +clean: + rm -f *.o main + diff --git a/fftw_benchmark/fftw3.f03.h b/fftw_benchmark/fftw3.f03.h new file mode 100644 index 0000000..933a53d --- /dev/null +++ b/fftw_benchmark/fftw3.f03.h @@ -0,0 +1,1819 @@ +! Generated automatically. DO NOT EDIT! + + integer, parameter :: C_FFTW_R2R_KIND = C_INT32_T + + integer(C_INT), parameter :: FFTW_R2HC = 0 + integer(C_INT), parameter :: FFTW_HC2R = 1 + integer(C_INT), parameter :: FFTW_DHT = 2 + integer(C_INT), parameter :: FFTW_REDFT00 = 3 + integer(C_INT), parameter :: FFTW_REDFT01 = 4 + integer(C_INT), parameter :: FFTW_REDFT10 = 5 + integer(C_INT), parameter :: FFTW_REDFT11 = 6 + integer(C_INT), parameter :: FFTW_RODFT00 = 7 + integer(C_INT), parameter :: FFTW_RODFT01 = 8 + integer(C_INT), parameter :: FFTW_RODFT10 = 9 + integer(C_INT), parameter :: FFTW_RODFT11 = 10 + integer(C_INT), parameter :: FFTW_FORWARD = -1 + integer(C_INT), parameter :: FFTW_BACKWARD = +1 + integer(C_INT), parameter :: FFTW_MEASURE = 0 + integer(C_INT), parameter :: FFTW_DESTROY_INPUT = 1 + integer(C_INT), parameter :: FFTW_UNALIGNED = 2 + integer(C_INT), parameter :: FFTW_CONSERVE_MEMORY = 4 + integer(C_INT), parameter :: FFTW_EXHAUSTIVE = 8 + integer(C_INT), parameter :: FFTW_PRESERVE_INPUT = 16 + integer(C_INT), parameter :: FFTW_PATIENT = 32 + integer(C_INT), parameter :: FFTW_ESTIMATE = 64 + integer(C_INT), parameter :: FFTW_ESTIMATE_PATIENT = 128 + integer(C_INT), parameter :: FFTW_BELIEVE_PCOST = 256 + integer(C_INT), parameter :: FFTW_NO_DFT_R2HC = 512 + integer(C_INT), parameter :: FFTW_NO_NONTHREADED = 1024 + integer(C_INT), parameter :: FFTW_NO_BUFFERING = 2048 + integer(C_INT), parameter :: FFTW_NO_INDIRECT_OP = 4096 + integer(C_INT), parameter :: FFTW_ALLOW_LARGE_GENERIC = 8192 + integer(C_INT), parameter :: FFTW_NO_RANK_SPLITS = 16384 + integer(C_INT), parameter :: FFTW_NO_VRANK_SPLITS = 32768 + integer(C_INT), parameter :: FFTW_NO_VRECURSE = 65536 + integer(C_INT), parameter :: FFTW_NO_SIMD = 131072 + integer(C_INT), parameter :: FFTW_NO_SLOW = 262144 + integer(C_INT), parameter :: FFTW_NO_FIXED_RADIX_LARGE_N = 524288 + integer(C_INT), parameter :: FFTW_ALLOW_PRUNING = 1048576 + integer(C_INT), parameter :: FFTW_WISDOM_ONLY = 2097152 + + type, bind(C) :: fftw_iodim + integer(C_INT) n, is, os + end type fftw_iodim + type, bind(C) :: fftw_iodim64 + integer(C_INTPTR_T) n, is, os + end type fftw_iodim64 + + interface + type(C_PTR) function fftw_plan_dft(rank,n,in,out,sign,flags) bind(C, name='fftw_plan_dft') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftw_plan_dft + + type(C_PTR) function fftw_plan_dft_1d(n,in,out,sign,flags) bind(C, name='fftw_plan_dft_1d') + import + integer(C_INT), value :: n + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftw_plan_dft_1d + + type(C_PTR) function fftw_plan_dft_2d(n0,n1,in,out,sign,flags) bind(C, name='fftw_plan_dft_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftw_plan_dft_2d + + type(C_PTR) function fftw_plan_dft_3d(n0,n1,n2,in,out,sign,flags) bind(C, name='fftw_plan_dft_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftw_plan_dft_3d + + type(C_PTR) function fftw_plan_many_dft(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,sign,flags) & + bind(C, name='fftw_plan_many_dft') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftw_plan_many_dft + + type(C_PTR) function fftw_plan_guru_dft(rank,dims,howmany_rank,howmany_dims,in,out,sign,flags) & + bind(C, name='fftw_plan_guru_dft') + import + integer(C_INT), value :: rank + type(fftw_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim), dimension(*), intent(in) :: howmany_dims + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftw_plan_guru_dft + + type(C_PTR) function fftw_plan_guru_split_dft(rank,dims,howmany_rank,howmany_dims,ri,ii,ro,io,flags) & + bind(C, name='fftw_plan_guru_split_dft') + import + integer(C_INT), value :: rank + type(fftw_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim), dimension(*), intent(in) :: howmany_dims + real(C_DOUBLE), dimension(*), intent(out) :: ri + real(C_DOUBLE), dimension(*), intent(out) :: ii + real(C_DOUBLE), dimension(*), intent(out) :: ro + real(C_DOUBLE), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftw_plan_guru_split_dft + + type(C_PTR) function fftw_plan_guru64_dft(rank,dims,howmany_rank,howmany_dims,in,out,sign,flags) & + bind(C, name='fftw_plan_guru64_dft') + import + integer(C_INT), value :: rank + type(fftw_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim64), dimension(*), intent(in) :: howmany_dims + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftw_plan_guru64_dft + + type(C_PTR) function fftw_plan_guru64_split_dft(rank,dims,howmany_rank,howmany_dims,ri,ii,ro,io,flags) & + bind(C, name='fftw_plan_guru64_split_dft') + import + integer(C_INT), value :: rank + type(fftw_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_DOUBLE), dimension(*), intent(out) :: ri + real(C_DOUBLE), dimension(*), intent(out) :: ii + real(C_DOUBLE), dimension(*), intent(out) :: ro + real(C_DOUBLE), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftw_plan_guru64_split_dft + + subroutine fftw_execute_dft(p,in,out) bind(C, name='fftw_execute_dft') + import + type(C_PTR), value :: p + complex(C_DOUBLE_COMPLEX), dimension(*), intent(inout) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + end subroutine fftw_execute_dft + + subroutine fftw_execute_split_dft(p,ri,ii,ro,io) bind(C, name='fftw_execute_split_dft') + import + type(C_PTR), value :: p + real(C_DOUBLE), dimension(*), intent(inout) :: ri + real(C_DOUBLE), dimension(*), intent(inout) :: ii + real(C_DOUBLE), dimension(*), intent(out) :: ro + real(C_DOUBLE), dimension(*), intent(out) :: io + end subroutine fftw_execute_split_dft + + type(C_PTR) function fftw_plan_many_dft_r2c(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,flags) & + bind(C, name='fftw_plan_many_dft_r2c') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + real(C_DOUBLE), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_INT), value :: flags + end function fftw_plan_many_dft_r2c + + type(C_PTR) function fftw_plan_dft_r2c(rank,n,in,out,flags) bind(C, name='fftw_plan_dft_r2c') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + real(C_DOUBLE), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_dft_r2c + + type(C_PTR) function fftw_plan_dft_r2c_1d(n,in,out,flags) bind(C, name='fftw_plan_dft_r2c_1d') + import + integer(C_INT), value :: n + real(C_DOUBLE), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_dft_r2c_1d + + type(C_PTR) function fftw_plan_dft_r2c_2d(n0,n1,in,out,flags) bind(C, name='fftw_plan_dft_r2c_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + real(C_DOUBLE), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_dft_r2c_2d + + type(C_PTR) function fftw_plan_dft_r2c_3d(n0,n1,n2,in,out,flags) bind(C, name='fftw_plan_dft_r2c_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + real(C_DOUBLE), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_dft_r2c_3d + + type(C_PTR) function fftw_plan_many_dft_c2r(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,flags) & + bind(C, name='fftw_plan_many_dft_c2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_INT), value :: flags + end function fftw_plan_many_dft_c2r + + type(C_PTR) function fftw_plan_dft_c2r(rank,n,in,out,flags) bind(C, name='fftw_plan_dft_c2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_dft_c2r + + type(C_PTR) function fftw_plan_dft_c2r_1d(n,in,out,flags) bind(C, name='fftw_plan_dft_c2r_1d') + import + integer(C_INT), value :: n + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_dft_c2r_1d + + type(C_PTR) function fftw_plan_dft_c2r_2d(n0,n1,in,out,flags) bind(C, name='fftw_plan_dft_c2r_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_dft_c2r_2d + + type(C_PTR) function fftw_plan_dft_c2r_3d(n0,n1,n2,in,out,flags) bind(C, name='fftw_plan_dft_c2r_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_dft_c2r_3d + + type(C_PTR) function fftw_plan_guru_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftw_plan_guru_dft_r2c') + import + integer(C_INT), value :: rank + type(fftw_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim), dimension(*), intent(in) :: howmany_dims + real(C_DOUBLE), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_guru_dft_r2c + + type(C_PTR) function fftw_plan_guru_dft_c2r(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftw_plan_guru_dft_c2r') + import + integer(C_INT), value :: rank + type(fftw_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim), dimension(*), intent(in) :: howmany_dims + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_guru_dft_c2r + + type(C_PTR) function fftw_plan_guru_split_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,ro,io,flags) & + bind(C, name='fftw_plan_guru_split_dft_r2c') + import + integer(C_INT), value :: rank + type(fftw_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim), dimension(*), intent(in) :: howmany_dims + real(C_DOUBLE), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: ro + real(C_DOUBLE), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftw_plan_guru_split_dft_r2c + + type(C_PTR) function fftw_plan_guru_split_dft_c2r(rank,dims,howmany_rank,howmany_dims,ri,ii,out,flags) & + bind(C, name='fftw_plan_guru_split_dft_c2r') + import + integer(C_INT), value :: rank + type(fftw_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim), dimension(*), intent(in) :: howmany_dims + real(C_DOUBLE), dimension(*), intent(out) :: ri + real(C_DOUBLE), dimension(*), intent(out) :: ii + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_guru_split_dft_c2r + + type(C_PTR) function fftw_plan_guru64_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftw_plan_guru64_dft_r2c') + import + integer(C_INT), value :: rank + type(fftw_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_DOUBLE), dimension(*), intent(out) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_guru64_dft_r2c + + type(C_PTR) function fftw_plan_guru64_dft_c2r(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftw_plan_guru64_dft_c2r') + import + integer(C_INT), value :: rank + type(fftw_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim64), dimension(*), intent(in) :: howmany_dims + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_guru64_dft_c2r + + type(C_PTR) function fftw_plan_guru64_split_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,ro,io,flags) & + bind(C, name='fftw_plan_guru64_split_dft_r2c') + import + integer(C_INT), value :: rank + type(fftw_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_DOUBLE), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: ro + real(C_DOUBLE), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftw_plan_guru64_split_dft_r2c + + type(C_PTR) function fftw_plan_guru64_split_dft_c2r(rank,dims,howmany_rank,howmany_dims,ri,ii,out,flags) & + bind(C, name='fftw_plan_guru64_split_dft_c2r') + import + integer(C_INT), value :: rank + type(fftw_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_DOUBLE), dimension(*), intent(out) :: ri + real(C_DOUBLE), dimension(*), intent(out) :: ii + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftw_plan_guru64_split_dft_c2r + + subroutine fftw_execute_dft_r2c(p,in,out) bind(C, name='fftw_execute_dft_r2c') + import + type(C_PTR), value :: p + real(C_DOUBLE), dimension(*), intent(inout) :: in + complex(C_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + end subroutine fftw_execute_dft_r2c + + subroutine fftw_execute_dft_c2r(p,in,out) bind(C, name='fftw_execute_dft_c2r') + import + type(C_PTR), value :: p + complex(C_DOUBLE_COMPLEX), dimension(*), intent(inout) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + end subroutine fftw_execute_dft_c2r + + subroutine fftw_execute_split_dft_r2c(p,in,ro,io) bind(C, name='fftw_execute_split_dft_r2c') + import + type(C_PTR), value :: p + real(C_DOUBLE), dimension(*), intent(inout) :: in + real(C_DOUBLE), dimension(*), intent(out) :: ro + real(C_DOUBLE), dimension(*), intent(out) :: io + end subroutine fftw_execute_split_dft_r2c + + subroutine fftw_execute_split_dft_c2r(p,ri,ii,out) bind(C, name='fftw_execute_split_dft_c2r') + import + type(C_PTR), value :: p + real(C_DOUBLE), dimension(*), intent(inout) :: ri + real(C_DOUBLE), dimension(*), intent(inout) :: ii + real(C_DOUBLE), dimension(*), intent(out) :: out + end subroutine fftw_execute_split_dft_c2r + + type(C_PTR) function fftw_plan_many_r2r(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,kind,flags) & + bind(C, name='fftw_plan_many_r2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + real(C_DOUBLE), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftw_plan_many_r2r + + type(C_PTR) function fftw_plan_r2r(rank,n,in,out,kind,flags) bind(C, name='fftw_plan_r2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + real(C_DOUBLE), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftw_plan_r2r + + type(C_PTR) function fftw_plan_r2r_1d(n,in,out,kind,flags) bind(C, name='fftw_plan_r2r_1d') + import + integer(C_INT), value :: n + real(C_DOUBLE), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), value :: kind + integer(C_INT), value :: flags + end function fftw_plan_r2r_1d + + type(C_PTR) function fftw_plan_r2r_2d(n0,n1,in,out,kind0,kind1,flags) bind(C, name='fftw_plan_r2r_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + real(C_DOUBLE), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), value :: kind0 + integer(C_FFTW_R2R_KIND), value :: kind1 + integer(C_INT), value :: flags + end function fftw_plan_r2r_2d + + type(C_PTR) function fftw_plan_r2r_3d(n0,n1,n2,in,out,kind0,kind1,kind2,flags) bind(C, name='fftw_plan_r2r_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + real(C_DOUBLE), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), value :: kind0 + integer(C_FFTW_R2R_KIND), value :: kind1 + integer(C_FFTW_R2R_KIND), value :: kind2 + integer(C_INT), value :: flags + end function fftw_plan_r2r_3d + + type(C_PTR) function fftw_plan_guru_r2r(rank,dims,howmany_rank,howmany_dims,in,out,kind,flags) & + bind(C, name='fftw_plan_guru_r2r') + import + integer(C_INT), value :: rank + type(fftw_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim), dimension(*), intent(in) :: howmany_dims + real(C_DOUBLE), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftw_plan_guru_r2r + + type(C_PTR) function fftw_plan_guru64_r2r(rank,dims,howmany_rank,howmany_dims,in,out,kind,flags) & + bind(C, name='fftw_plan_guru64_r2r') + import + integer(C_INT), value :: rank + type(fftw_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftw_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_DOUBLE), dimension(*), intent(out) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftw_plan_guru64_r2r + + subroutine fftw_execute_r2r(p,in,out) bind(C, name='fftw_execute_r2r') + import + type(C_PTR), value :: p + real(C_DOUBLE), dimension(*), intent(inout) :: in + real(C_DOUBLE), dimension(*), intent(out) :: out + end subroutine fftw_execute_r2r + + subroutine fftw_destroy_plan(p) bind(C, name='fftw_destroy_plan') + import + type(C_PTR), value :: p + end subroutine fftw_destroy_plan + + subroutine fftw_forget_wisdom() bind(C, name='fftw_forget_wisdom') + import + end subroutine fftw_forget_wisdom + + subroutine fftw_cleanup() bind(C, name='fftw_cleanup') + import + end subroutine fftw_cleanup + + subroutine fftw_set_timelimit(t) bind(C, name='fftw_set_timelimit') + import + real(C_DOUBLE), value :: t + end subroutine fftw_set_timelimit + + subroutine fftw_plan_with_nthreads(nthreads) bind(C, name='fftw_plan_with_nthreads') + import + integer(C_INT), value :: nthreads + end subroutine fftw_plan_with_nthreads + + integer(C_INT) function fftw_init_threads() bind(C, name='fftw_init_threads') + import + end function fftw_init_threads + + subroutine fftw_cleanup_threads() bind(C, name='fftw_cleanup_threads') + import + end subroutine fftw_cleanup_threads + + integer(C_INT) function fftw_export_wisdom_to_filename(filename) bind(C, name='fftw_export_wisdom_to_filename') + import + character(C_CHAR), dimension(*), intent(in) :: filename + end function fftw_export_wisdom_to_filename + + subroutine fftw_export_wisdom_to_file(output_file) bind(C, name='fftw_export_wisdom_to_file') + import + type(C_PTR), value :: output_file + end subroutine fftw_export_wisdom_to_file + + type(C_PTR) function fftw_export_wisdom_to_string() bind(C, name='fftw_export_wisdom_to_string') + import + end function fftw_export_wisdom_to_string + + subroutine fftw_export_wisdom(write_char,data) bind(C, name='fftw_export_wisdom') + import + type(C_FUNPTR), value :: write_char + type(C_PTR), value :: data + end subroutine fftw_export_wisdom + + integer(C_INT) function fftw_import_system_wisdom() bind(C, name='fftw_import_system_wisdom') + import + end function fftw_import_system_wisdom + + integer(C_INT) function fftw_import_wisdom_from_filename(filename) bind(C, name='fftw_import_wisdom_from_filename') + import + character(C_CHAR), dimension(*), intent(in) :: filename + end function fftw_import_wisdom_from_filename + + integer(C_INT) function fftw_import_wisdom_from_file(input_file) bind(C, name='fftw_import_wisdom_from_file') + import + type(C_PTR), value :: input_file + end function fftw_import_wisdom_from_file + + integer(C_INT) function fftw_import_wisdom_from_string(input_string) bind(C, name='fftw_import_wisdom_from_string') + import + character(C_CHAR), dimension(*), intent(in) :: input_string + end function fftw_import_wisdom_from_string + + integer(C_INT) function fftw_import_wisdom(read_char,data) bind(C, name='fftw_import_wisdom') + import + type(C_FUNPTR), value :: read_char + type(C_PTR), value :: data + end function fftw_import_wisdom + + subroutine fftw_fprint_plan(p,output_file) bind(C, name='fftw_fprint_plan') + import + type(C_PTR), value :: p + type(C_PTR), value :: output_file + end subroutine fftw_fprint_plan + + subroutine fftw_print_plan(p) bind(C, name='fftw_print_plan') + import + type(C_PTR), value :: p + end subroutine fftw_print_plan + + type(C_PTR) function fftw_malloc(n) bind(C, name='fftw_malloc') + import + integer(C_SIZE_T), value :: n + end function fftw_malloc + + type(C_PTR) function fftw_alloc_real(n) bind(C, name='fftw_alloc_real') + import + integer(C_SIZE_T), value :: n + end function fftw_alloc_real + + type(C_PTR) function fftw_alloc_complex(n) bind(C, name='fftw_alloc_complex') + import + integer(C_SIZE_T), value :: n + end function fftw_alloc_complex + + subroutine fftw_free(p) bind(C, name='fftw_free') + import + type(C_PTR), value :: p + end subroutine fftw_free + + subroutine fftw_flops(p,add,mul,fmas) bind(C, name='fftw_flops') + import + type(C_PTR), value :: p + real(C_DOUBLE), intent(out) :: add + real(C_DOUBLE), intent(out) :: mul + real(C_DOUBLE), intent(out) :: fmas + end subroutine fftw_flops + + real(C_DOUBLE) function fftw_estimate_cost(p) bind(C, name='fftw_estimate_cost') + import + type(C_PTR), value :: p + end function fftw_estimate_cost + + real(C_DOUBLE) function fftw_cost(p) bind(C, name='fftw_cost') + import + type(C_PTR), value :: p + end function fftw_cost + + end interface + + type, bind(C) :: fftwf_iodim + integer(C_INT) n, is, os + end type fftwf_iodim + type, bind(C) :: fftwf_iodim64 + integer(C_INTPTR_T) n, is, os + end type fftwf_iodim64 + + interface + type(C_PTR) function fftwf_plan_dft(rank,n,in,out,sign,flags) bind(C, name='fftwf_plan_dft') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwf_plan_dft + + type(C_PTR) function fftwf_plan_dft_1d(n,in,out,sign,flags) bind(C, name='fftwf_plan_dft_1d') + import + integer(C_INT), value :: n + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwf_plan_dft_1d + + type(C_PTR) function fftwf_plan_dft_2d(n0,n1,in,out,sign,flags) bind(C, name='fftwf_plan_dft_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwf_plan_dft_2d + + type(C_PTR) function fftwf_plan_dft_3d(n0,n1,n2,in,out,sign,flags) bind(C, name='fftwf_plan_dft_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwf_plan_dft_3d + + type(C_PTR) function fftwf_plan_many_dft(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,sign,flags) & + bind(C, name='fftwf_plan_many_dft') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwf_plan_many_dft + + type(C_PTR) function fftwf_plan_guru_dft(rank,dims,howmany_rank,howmany_dims,in,out,sign,flags) & + bind(C, name='fftwf_plan_guru_dft') + import + integer(C_INT), value :: rank + type(fftwf_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim), dimension(*), intent(in) :: howmany_dims + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwf_plan_guru_dft + + type(C_PTR) function fftwf_plan_guru_split_dft(rank,dims,howmany_rank,howmany_dims,ri,ii,ro,io,flags) & + bind(C, name='fftwf_plan_guru_split_dft') + import + integer(C_INT), value :: rank + type(fftwf_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim), dimension(*), intent(in) :: howmany_dims + real(C_FLOAT), dimension(*), intent(out) :: ri + real(C_FLOAT), dimension(*), intent(out) :: ii + real(C_FLOAT), dimension(*), intent(out) :: ro + real(C_FLOAT), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftwf_plan_guru_split_dft + + type(C_PTR) function fftwf_plan_guru64_dft(rank,dims,howmany_rank,howmany_dims,in,out,sign,flags) & + bind(C, name='fftwf_plan_guru64_dft') + import + integer(C_INT), value :: rank + type(fftwf_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim64), dimension(*), intent(in) :: howmany_dims + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwf_plan_guru64_dft + + type(C_PTR) function fftwf_plan_guru64_split_dft(rank,dims,howmany_rank,howmany_dims,ri,ii,ro,io,flags) & + bind(C, name='fftwf_plan_guru64_split_dft') + import + integer(C_INT), value :: rank + type(fftwf_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_FLOAT), dimension(*), intent(out) :: ri + real(C_FLOAT), dimension(*), intent(out) :: ii + real(C_FLOAT), dimension(*), intent(out) :: ro + real(C_FLOAT), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftwf_plan_guru64_split_dft + + subroutine fftwf_execute_dft(p,in,out) bind(C, name='fftwf_execute_dft') + import + type(C_PTR), value :: p + complex(C_FLOAT_COMPLEX), dimension(*), intent(inout) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + end subroutine fftwf_execute_dft + + subroutine fftwf_execute_split_dft(p,ri,ii,ro,io) bind(C, name='fftwf_execute_split_dft') + import + type(C_PTR), value :: p + real(C_FLOAT), dimension(*), intent(inout) :: ri + real(C_FLOAT), dimension(*), intent(inout) :: ii + real(C_FLOAT), dimension(*), intent(out) :: ro + real(C_FLOAT), dimension(*), intent(out) :: io + end subroutine fftwf_execute_split_dft + + type(C_PTR) function fftwf_plan_many_dft_r2c(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,flags) & + bind(C, name='fftwf_plan_many_dft_r2c') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + real(C_FLOAT), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_INT), value :: flags + end function fftwf_plan_many_dft_r2c + + type(C_PTR) function fftwf_plan_dft_r2c(rank,n,in,out,flags) bind(C, name='fftwf_plan_dft_r2c') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + real(C_FLOAT), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_dft_r2c + + type(C_PTR) function fftwf_plan_dft_r2c_1d(n,in,out,flags) bind(C, name='fftwf_plan_dft_r2c_1d') + import + integer(C_INT), value :: n + real(C_FLOAT), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_dft_r2c_1d + + type(C_PTR) function fftwf_plan_dft_r2c_2d(n0,n1,in,out,flags) bind(C, name='fftwf_plan_dft_r2c_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + real(C_FLOAT), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_dft_r2c_2d + + type(C_PTR) function fftwf_plan_dft_r2c_3d(n0,n1,n2,in,out,flags) bind(C, name='fftwf_plan_dft_r2c_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + real(C_FLOAT), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_dft_r2c_3d + + type(C_PTR) function fftwf_plan_many_dft_c2r(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,flags) & + bind(C, name='fftwf_plan_many_dft_c2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_INT), value :: flags + end function fftwf_plan_many_dft_c2r + + type(C_PTR) function fftwf_plan_dft_c2r(rank,n,in,out,flags) bind(C, name='fftwf_plan_dft_c2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_dft_c2r + + type(C_PTR) function fftwf_plan_dft_c2r_1d(n,in,out,flags) bind(C, name='fftwf_plan_dft_c2r_1d') + import + integer(C_INT), value :: n + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_dft_c2r_1d + + type(C_PTR) function fftwf_plan_dft_c2r_2d(n0,n1,in,out,flags) bind(C, name='fftwf_plan_dft_c2r_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_dft_c2r_2d + + type(C_PTR) function fftwf_plan_dft_c2r_3d(n0,n1,n2,in,out,flags) bind(C, name='fftwf_plan_dft_c2r_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_dft_c2r_3d + + type(C_PTR) function fftwf_plan_guru_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftwf_plan_guru_dft_r2c') + import + integer(C_INT), value :: rank + type(fftwf_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim), dimension(*), intent(in) :: howmany_dims + real(C_FLOAT), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_guru_dft_r2c + + type(C_PTR) function fftwf_plan_guru_dft_c2r(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftwf_plan_guru_dft_c2r') + import + integer(C_INT), value :: rank + type(fftwf_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim), dimension(*), intent(in) :: howmany_dims + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_guru_dft_c2r + + type(C_PTR) function fftwf_plan_guru_split_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,ro,io,flags) & + bind(C, name='fftwf_plan_guru_split_dft_r2c') + import + integer(C_INT), value :: rank + type(fftwf_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim), dimension(*), intent(in) :: howmany_dims + real(C_FLOAT), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: ro + real(C_FLOAT), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftwf_plan_guru_split_dft_r2c + + type(C_PTR) function fftwf_plan_guru_split_dft_c2r(rank,dims,howmany_rank,howmany_dims,ri,ii,out,flags) & + bind(C, name='fftwf_plan_guru_split_dft_c2r') + import + integer(C_INT), value :: rank + type(fftwf_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim), dimension(*), intent(in) :: howmany_dims + real(C_FLOAT), dimension(*), intent(out) :: ri + real(C_FLOAT), dimension(*), intent(out) :: ii + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_guru_split_dft_c2r + + type(C_PTR) function fftwf_plan_guru64_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftwf_plan_guru64_dft_r2c') + import + integer(C_INT), value :: rank + type(fftwf_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_FLOAT), dimension(*), intent(out) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_guru64_dft_r2c + + type(C_PTR) function fftwf_plan_guru64_dft_c2r(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftwf_plan_guru64_dft_c2r') + import + integer(C_INT), value :: rank + type(fftwf_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim64), dimension(*), intent(in) :: howmany_dims + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_guru64_dft_c2r + + type(C_PTR) function fftwf_plan_guru64_split_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,ro,io,flags) & + bind(C, name='fftwf_plan_guru64_split_dft_r2c') + import + integer(C_INT), value :: rank + type(fftwf_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_FLOAT), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: ro + real(C_FLOAT), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftwf_plan_guru64_split_dft_r2c + + type(C_PTR) function fftwf_plan_guru64_split_dft_c2r(rank,dims,howmany_rank,howmany_dims,ri,ii,out,flags) & + bind(C, name='fftwf_plan_guru64_split_dft_c2r') + import + integer(C_INT), value :: rank + type(fftwf_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_FLOAT), dimension(*), intent(out) :: ri + real(C_FLOAT), dimension(*), intent(out) :: ii + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwf_plan_guru64_split_dft_c2r + + subroutine fftwf_execute_dft_r2c(p,in,out) bind(C, name='fftwf_execute_dft_r2c') + import + type(C_PTR), value :: p + real(C_FLOAT), dimension(*), intent(inout) :: in + complex(C_FLOAT_COMPLEX), dimension(*), intent(out) :: out + end subroutine fftwf_execute_dft_r2c + + subroutine fftwf_execute_dft_c2r(p,in,out) bind(C, name='fftwf_execute_dft_c2r') + import + type(C_PTR), value :: p + complex(C_FLOAT_COMPLEX), dimension(*), intent(inout) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + end subroutine fftwf_execute_dft_c2r + + subroutine fftwf_execute_split_dft_r2c(p,in,ro,io) bind(C, name='fftwf_execute_split_dft_r2c') + import + type(C_PTR), value :: p + real(C_FLOAT), dimension(*), intent(inout) :: in + real(C_FLOAT), dimension(*), intent(out) :: ro + real(C_FLOAT), dimension(*), intent(out) :: io + end subroutine fftwf_execute_split_dft_r2c + + subroutine fftwf_execute_split_dft_c2r(p,ri,ii,out) bind(C, name='fftwf_execute_split_dft_c2r') + import + type(C_PTR), value :: p + real(C_FLOAT), dimension(*), intent(inout) :: ri + real(C_FLOAT), dimension(*), intent(inout) :: ii + real(C_FLOAT), dimension(*), intent(out) :: out + end subroutine fftwf_execute_split_dft_c2r + + type(C_PTR) function fftwf_plan_many_r2r(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,kind,flags) & + bind(C, name='fftwf_plan_many_r2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + real(C_FLOAT), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftwf_plan_many_r2r + + type(C_PTR) function fftwf_plan_r2r(rank,n,in,out,kind,flags) bind(C, name='fftwf_plan_r2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + real(C_FLOAT), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftwf_plan_r2r + + type(C_PTR) function fftwf_plan_r2r_1d(n,in,out,kind,flags) bind(C, name='fftwf_plan_r2r_1d') + import + integer(C_INT), value :: n + real(C_FLOAT), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), value :: kind + integer(C_INT), value :: flags + end function fftwf_plan_r2r_1d + + type(C_PTR) function fftwf_plan_r2r_2d(n0,n1,in,out,kind0,kind1,flags) bind(C, name='fftwf_plan_r2r_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + real(C_FLOAT), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), value :: kind0 + integer(C_FFTW_R2R_KIND), value :: kind1 + integer(C_INT), value :: flags + end function fftwf_plan_r2r_2d + + type(C_PTR) function fftwf_plan_r2r_3d(n0,n1,n2,in,out,kind0,kind1,kind2,flags) bind(C, name='fftwf_plan_r2r_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + real(C_FLOAT), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), value :: kind0 + integer(C_FFTW_R2R_KIND), value :: kind1 + integer(C_FFTW_R2R_KIND), value :: kind2 + integer(C_INT), value :: flags + end function fftwf_plan_r2r_3d + + type(C_PTR) function fftwf_plan_guru_r2r(rank,dims,howmany_rank,howmany_dims,in,out,kind,flags) & + bind(C, name='fftwf_plan_guru_r2r') + import + integer(C_INT), value :: rank + type(fftwf_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim), dimension(*), intent(in) :: howmany_dims + real(C_FLOAT), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftwf_plan_guru_r2r + + type(C_PTR) function fftwf_plan_guru64_r2r(rank,dims,howmany_rank,howmany_dims,in,out,kind,flags) & + bind(C, name='fftwf_plan_guru64_r2r') + import + integer(C_INT), value :: rank + type(fftwf_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwf_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_FLOAT), dimension(*), intent(out) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftwf_plan_guru64_r2r + + subroutine fftwf_execute_r2r(p,in,out) bind(C, name='fftwf_execute_r2r') + import + type(C_PTR), value :: p + real(C_FLOAT), dimension(*), intent(inout) :: in + real(C_FLOAT), dimension(*), intent(out) :: out + end subroutine fftwf_execute_r2r + + subroutine fftwf_destroy_plan(p) bind(C, name='fftwf_destroy_plan') + import + type(C_PTR), value :: p + end subroutine fftwf_destroy_plan + + subroutine fftwf_forget_wisdom() bind(C, name='fftwf_forget_wisdom') + import + end subroutine fftwf_forget_wisdom + + subroutine fftwf_cleanup() bind(C, name='fftwf_cleanup') + import + end subroutine fftwf_cleanup + + subroutine fftwf_set_timelimit(t) bind(C, name='fftwf_set_timelimit') + import + real(C_DOUBLE), value :: t + end subroutine fftwf_set_timelimit + + subroutine fftwf_plan_with_nthreads(nthreads) bind(C, name='fftwf_plan_with_nthreads') + import + integer(C_INT), value :: nthreads + end subroutine fftwf_plan_with_nthreads + + integer(C_INT) function fftwf_init_threads() bind(C, name='fftwf_init_threads') + import + end function fftwf_init_threads + + subroutine fftwf_cleanup_threads() bind(C, name='fftwf_cleanup_threads') + import + end subroutine fftwf_cleanup_threads + + integer(C_INT) function fftwf_export_wisdom_to_filename(filename) bind(C, name='fftwf_export_wisdom_to_filename') + import + character(C_CHAR), dimension(*), intent(in) :: filename + end function fftwf_export_wisdom_to_filename + + subroutine fftwf_export_wisdom_to_file(output_file) bind(C, name='fftwf_export_wisdom_to_file') + import + type(C_PTR), value :: output_file + end subroutine fftwf_export_wisdom_to_file + + type(C_PTR) function fftwf_export_wisdom_to_string() bind(C, name='fftwf_export_wisdom_to_string') + import + end function fftwf_export_wisdom_to_string + + subroutine fftwf_export_wisdom(write_char,data) bind(C, name='fftwf_export_wisdom') + import + type(C_FUNPTR), value :: write_char + type(C_PTR), value :: data + end subroutine fftwf_export_wisdom + + integer(C_INT) function fftwf_import_system_wisdom() bind(C, name='fftwf_import_system_wisdom') + import + end function fftwf_import_system_wisdom + + integer(C_INT) function fftwf_import_wisdom_from_filename(filename) bind(C, name='fftwf_import_wisdom_from_filename') + import + character(C_CHAR), dimension(*), intent(in) :: filename + end function fftwf_import_wisdom_from_filename + + integer(C_INT) function fftwf_import_wisdom_from_file(input_file) bind(C, name='fftwf_import_wisdom_from_file') + import + type(C_PTR), value :: input_file + end function fftwf_import_wisdom_from_file + + integer(C_INT) function fftwf_import_wisdom_from_string(input_string) bind(C, name='fftwf_import_wisdom_from_string') + import + character(C_CHAR), dimension(*), intent(in) :: input_string + end function fftwf_import_wisdom_from_string + + integer(C_INT) function fftwf_import_wisdom(read_char,data) bind(C, name='fftwf_import_wisdom') + import + type(C_FUNPTR), value :: read_char + type(C_PTR), value :: data + end function fftwf_import_wisdom + + subroutine fftwf_fprint_plan(p,output_file) bind(C, name='fftwf_fprint_plan') + import + type(C_PTR), value :: p + type(C_PTR), value :: output_file + end subroutine fftwf_fprint_plan + + subroutine fftwf_print_plan(p) bind(C, name='fftwf_print_plan') + import + type(C_PTR), value :: p + end subroutine fftwf_print_plan + + type(C_PTR) function fftwf_malloc(n) bind(C, name='fftwf_malloc') + import + integer(C_SIZE_T), value :: n + end function fftwf_malloc + + type(C_PTR) function fftwf_alloc_real(n) bind(C, name='fftwf_alloc_real') + import + integer(C_SIZE_T), value :: n + end function fftwf_alloc_real + + type(C_PTR) function fftwf_alloc_complex(n) bind(C, name='fftwf_alloc_complex') + import + integer(C_SIZE_T), value :: n + end function fftwf_alloc_complex + + subroutine fftwf_free(p) bind(C, name='fftwf_free') + import + type(C_PTR), value :: p + end subroutine fftwf_free + + subroutine fftwf_flops(p,add,mul,fmas) bind(C, name='fftwf_flops') + import + type(C_PTR), value :: p + real(C_DOUBLE), intent(out) :: add + real(C_DOUBLE), intent(out) :: mul + real(C_DOUBLE), intent(out) :: fmas + end subroutine fftwf_flops + + real(C_DOUBLE) function fftwf_estimate_cost(p) bind(C, name='fftwf_estimate_cost') + import + type(C_PTR), value :: p + end function fftwf_estimate_cost + + real(C_DOUBLE) function fftwf_cost(p) bind(C, name='fftwf_cost') + import + type(C_PTR), value :: p + end function fftwf_cost + + end interface + + type, bind(C) :: fftwl_iodim + integer(C_INT) n, is, os + end type fftwl_iodim + type, bind(C) :: fftwl_iodim64 + integer(C_INTPTR_T) n, is, os + end type fftwl_iodim64 + + interface + type(C_PTR) function fftwl_plan_dft(rank,n,in,out,sign,flags) bind(C, name='fftwl_plan_dft') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwl_plan_dft + + type(C_PTR) function fftwl_plan_dft_1d(n,in,out,sign,flags) bind(C, name='fftwl_plan_dft_1d') + import + integer(C_INT), value :: n + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwl_plan_dft_1d + + type(C_PTR) function fftwl_plan_dft_2d(n0,n1,in,out,sign,flags) bind(C, name='fftwl_plan_dft_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwl_plan_dft_2d + + type(C_PTR) function fftwl_plan_dft_3d(n0,n1,n2,in,out,sign,flags) bind(C, name='fftwl_plan_dft_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwl_plan_dft_3d + + type(C_PTR) function fftwl_plan_many_dft(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,sign,flags) & + bind(C, name='fftwl_plan_many_dft') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwl_plan_many_dft + + type(C_PTR) function fftwl_plan_guru_dft(rank,dims,howmany_rank,howmany_dims,in,out,sign,flags) & + bind(C, name='fftwl_plan_guru_dft') + import + integer(C_INT), value :: rank + type(fftwl_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim), dimension(*), intent(in) :: howmany_dims + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwl_plan_guru_dft + + type(C_PTR) function fftwl_plan_guru_split_dft(rank,dims,howmany_rank,howmany_dims,ri,ii,ro,io,flags) & + bind(C, name='fftwl_plan_guru_split_dft') + import + integer(C_INT), value :: rank + type(fftwl_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim), dimension(*), intent(in) :: howmany_dims + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ri + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ii + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ro + real(C_LONG_DOUBLE), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftwl_plan_guru_split_dft + + type(C_PTR) function fftwl_plan_guru64_dft(rank,dims,howmany_rank,howmany_dims,in,out,sign,flags) & + bind(C, name='fftwl_plan_guru64_dft') + import + integer(C_INT), value :: rank + type(fftwl_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim64), dimension(*), intent(in) :: howmany_dims + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: sign + integer(C_INT), value :: flags + end function fftwl_plan_guru64_dft + + type(C_PTR) function fftwl_plan_guru64_split_dft(rank,dims,howmany_rank,howmany_dims,ri,ii,ro,io,flags) & + bind(C, name='fftwl_plan_guru64_split_dft') + import + integer(C_INT), value :: rank + type(fftwl_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ri + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ii + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ro + real(C_LONG_DOUBLE), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftwl_plan_guru64_split_dft + + subroutine fftwl_execute_dft(p,in,out) bind(C, name='fftwl_execute_dft') + import + type(C_PTR), value :: p + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(inout) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + end subroutine fftwl_execute_dft + + subroutine fftwl_execute_split_dft(p,ri,ii,ro,io) bind(C, name='fftwl_execute_split_dft') + import + type(C_PTR), value :: p + real(C_LONG_DOUBLE), dimension(*), intent(inout) :: ri + real(C_LONG_DOUBLE), dimension(*), intent(inout) :: ii + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ro + real(C_LONG_DOUBLE), dimension(*), intent(out) :: io + end subroutine fftwl_execute_split_dft + + type(C_PTR) function fftwl_plan_many_dft_r2c(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,flags) & + bind(C, name='fftwl_plan_many_dft_r2c') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_INT), value :: flags + end function fftwl_plan_many_dft_r2c + + type(C_PTR) function fftwl_plan_dft_r2c(rank,n,in,out,flags) bind(C, name='fftwl_plan_dft_r2c') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_dft_r2c + + type(C_PTR) function fftwl_plan_dft_r2c_1d(n,in,out,flags) bind(C, name='fftwl_plan_dft_r2c_1d') + import + integer(C_INT), value :: n + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_dft_r2c_1d + + type(C_PTR) function fftwl_plan_dft_r2c_2d(n0,n1,in,out,flags) bind(C, name='fftwl_plan_dft_r2c_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_dft_r2c_2d + + type(C_PTR) function fftwl_plan_dft_r2c_3d(n0,n1,n2,in,out,flags) bind(C, name='fftwl_plan_dft_r2c_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_dft_r2c_3d + + type(C_PTR) function fftwl_plan_many_dft_c2r(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,flags) & + bind(C, name='fftwl_plan_many_dft_c2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_INT), value :: flags + end function fftwl_plan_many_dft_c2r + + type(C_PTR) function fftwl_plan_dft_c2r(rank,n,in,out,flags) bind(C, name='fftwl_plan_dft_c2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_dft_c2r + + type(C_PTR) function fftwl_plan_dft_c2r_1d(n,in,out,flags) bind(C, name='fftwl_plan_dft_c2r_1d') + import + integer(C_INT), value :: n + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_dft_c2r_1d + + type(C_PTR) function fftwl_plan_dft_c2r_2d(n0,n1,in,out,flags) bind(C, name='fftwl_plan_dft_c2r_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_dft_c2r_2d + + type(C_PTR) function fftwl_plan_dft_c2r_3d(n0,n1,n2,in,out,flags) bind(C, name='fftwl_plan_dft_c2r_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_dft_c2r_3d + + type(C_PTR) function fftwl_plan_guru_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftwl_plan_guru_dft_r2c') + import + integer(C_INT), value :: rank + type(fftwl_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim), dimension(*), intent(in) :: howmany_dims + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_guru_dft_r2c + + type(C_PTR) function fftwl_plan_guru_dft_c2r(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftwl_plan_guru_dft_c2r') + import + integer(C_INT), value :: rank + type(fftwl_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim), dimension(*), intent(in) :: howmany_dims + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_guru_dft_c2r + + type(C_PTR) function fftwl_plan_guru_split_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,ro,io,flags) & + bind(C, name='fftwl_plan_guru_split_dft_r2c') + import + integer(C_INT), value :: rank + type(fftwl_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim), dimension(*), intent(in) :: howmany_dims + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ro + real(C_LONG_DOUBLE), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftwl_plan_guru_split_dft_r2c + + type(C_PTR) function fftwl_plan_guru_split_dft_c2r(rank,dims,howmany_rank,howmany_dims,ri,ii,out,flags) & + bind(C, name='fftwl_plan_guru_split_dft_c2r') + import + integer(C_INT), value :: rank + type(fftwl_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim), dimension(*), intent(in) :: howmany_dims + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ri + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ii + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_guru_split_dft_c2r + + type(C_PTR) function fftwl_plan_guru64_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftwl_plan_guru64_dft_r2c') + import + integer(C_INT), value :: rank + type(fftwl_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_guru64_dft_r2c + + type(C_PTR) function fftwl_plan_guru64_dft_c2r(rank,dims,howmany_rank,howmany_dims,in,out,flags) & + bind(C, name='fftwl_plan_guru64_dft_c2r') + import + integer(C_INT), value :: rank + type(fftwl_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim64), dimension(*), intent(in) :: howmany_dims + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_guru64_dft_c2r + + type(C_PTR) function fftwl_plan_guru64_split_dft_r2c(rank,dims,howmany_rank,howmany_dims,in,ro,io,flags) & + bind(C, name='fftwl_plan_guru64_split_dft_r2c') + import + integer(C_INT), value :: rank + type(fftwl_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ro + real(C_LONG_DOUBLE), dimension(*), intent(out) :: io + integer(C_INT), value :: flags + end function fftwl_plan_guru64_split_dft_r2c + + type(C_PTR) function fftwl_plan_guru64_split_dft_c2r(rank,dims,howmany_rank,howmany_dims,ri,ii,out,flags) & + bind(C, name='fftwl_plan_guru64_split_dft_c2r') + import + integer(C_INT), value :: rank + type(fftwl_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ri + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ii + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), value :: flags + end function fftwl_plan_guru64_split_dft_c2r + + subroutine fftwl_execute_dft_r2c(p,in,out) bind(C, name='fftwl_execute_dft_r2c') + import + type(C_PTR), value :: p + real(C_LONG_DOUBLE), dimension(*), intent(inout) :: in + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(out) :: out + end subroutine fftwl_execute_dft_r2c + + subroutine fftwl_execute_dft_c2r(p,in,out) bind(C, name='fftwl_execute_dft_c2r') + import + type(C_PTR), value :: p + complex(C_LONG_DOUBLE_COMPLEX), dimension(*), intent(inout) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + end subroutine fftwl_execute_dft_c2r + + subroutine fftwl_execute_split_dft_r2c(p,in,ro,io) bind(C, name='fftwl_execute_split_dft_r2c') + import + type(C_PTR), value :: p + real(C_LONG_DOUBLE), dimension(*), intent(inout) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: ro + real(C_LONG_DOUBLE), dimension(*), intent(out) :: io + end subroutine fftwl_execute_split_dft_r2c + + subroutine fftwl_execute_split_dft_c2r(p,ri,ii,out) bind(C, name='fftwl_execute_split_dft_c2r') + import + type(C_PTR), value :: p + real(C_LONG_DOUBLE), dimension(*), intent(inout) :: ri + real(C_LONG_DOUBLE), dimension(*), intent(inout) :: ii + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + end subroutine fftwl_execute_split_dft_c2r + + type(C_PTR) function fftwl_plan_many_r2r(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,kind,flags) & + bind(C, name='fftwl_plan_many_r2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + integer(C_INT), value :: howmany + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + integer(C_INT), dimension(*), intent(in) :: inembed + integer(C_INT), value :: istride + integer(C_INT), value :: idist + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_INT), dimension(*), intent(in) :: onembed + integer(C_INT), value :: ostride + integer(C_INT), value :: odist + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftwl_plan_many_r2r + + type(C_PTR) function fftwl_plan_r2r(rank,n,in,out,kind,flags) bind(C, name='fftwl_plan_r2r') + import + integer(C_INT), value :: rank + integer(C_INT), dimension(*), intent(in) :: n + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftwl_plan_r2r + + type(C_PTR) function fftwl_plan_r2r_1d(n,in,out,kind,flags) bind(C, name='fftwl_plan_r2r_1d') + import + integer(C_INT), value :: n + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), value :: kind + integer(C_INT), value :: flags + end function fftwl_plan_r2r_1d + + type(C_PTR) function fftwl_plan_r2r_2d(n0,n1,in,out,kind0,kind1,flags) bind(C, name='fftwl_plan_r2r_2d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), value :: kind0 + integer(C_FFTW_R2R_KIND), value :: kind1 + integer(C_INT), value :: flags + end function fftwl_plan_r2r_2d + + type(C_PTR) function fftwl_plan_r2r_3d(n0,n1,n2,in,out,kind0,kind1,kind2,flags) bind(C, name='fftwl_plan_r2r_3d') + import + integer(C_INT), value :: n0 + integer(C_INT), value :: n1 + integer(C_INT), value :: n2 + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), value :: kind0 + integer(C_FFTW_R2R_KIND), value :: kind1 + integer(C_FFTW_R2R_KIND), value :: kind2 + integer(C_INT), value :: flags + end function fftwl_plan_r2r_3d + + type(C_PTR) function fftwl_plan_guru_r2r(rank,dims,howmany_rank,howmany_dims,in,out,kind,flags) & + bind(C, name='fftwl_plan_guru_r2r') + import + integer(C_INT), value :: rank + type(fftwl_iodim), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim), dimension(*), intent(in) :: howmany_dims + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftwl_plan_guru_r2r + + type(C_PTR) function fftwl_plan_guru64_r2r(rank,dims,howmany_rank,howmany_dims,in,out,kind,flags) & + bind(C, name='fftwl_plan_guru64_r2r') + import + integer(C_INT), value :: rank + type(fftwl_iodim64), dimension(*), intent(in) :: dims + integer(C_INT), value :: howmany_rank + type(fftwl_iodim64), dimension(*), intent(in) :: howmany_dims + real(C_LONG_DOUBLE), dimension(*), intent(out) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + integer(C_FFTW_R2R_KIND), dimension(*), intent(in) :: kind + integer(C_INT), value :: flags + end function fftwl_plan_guru64_r2r + + subroutine fftwl_execute_r2r(p,in,out) bind(C, name='fftwl_execute_r2r') + import + type(C_PTR), value :: p + real(C_LONG_DOUBLE), dimension(*), intent(inout) :: in + real(C_LONG_DOUBLE), dimension(*), intent(out) :: out + end subroutine fftwl_execute_r2r + + subroutine fftwl_destroy_plan(p) bind(C, name='fftwl_destroy_plan') + import + type(C_PTR), value :: p + end subroutine fftwl_destroy_plan + + subroutine fftwl_forget_wisdom() bind(C, name='fftwl_forget_wisdom') + import + end subroutine fftwl_forget_wisdom + + subroutine fftwl_cleanup() bind(C, name='fftwl_cleanup') + import + end subroutine fftwl_cleanup + + subroutine fftwl_set_timelimit(t) bind(C, name='fftwl_set_timelimit') + import + real(C_DOUBLE), value :: t + end subroutine fftwl_set_timelimit + + subroutine fftwl_plan_with_nthreads(nthreads) bind(C, name='fftwl_plan_with_nthreads') + import + integer(C_INT), value :: nthreads + end subroutine fftwl_plan_with_nthreads + + integer(C_INT) function fftwl_init_threads() bind(C, name='fftwl_init_threads') + import + end function fftwl_init_threads + + subroutine fftwl_cleanup_threads() bind(C, name='fftwl_cleanup_threads') + import + end subroutine fftwl_cleanup_threads + + integer(C_INT) function fftwl_export_wisdom_to_filename(filename) bind(C, name='fftwl_export_wisdom_to_filename') + import + character(C_CHAR), dimension(*), intent(in) :: filename + end function fftwl_export_wisdom_to_filename + + subroutine fftwl_export_wisdom_to_file(output_file) bind(C, name='fftwl_export_wisdom_to_file') + import + type(C_PTR), value :: output_file + end subroutine fftwl_export_wisdom_to_file + + type(C_PTR) function fftwl_export_wisdom_to_string() bind(C, name='fftwl_export_wisdom_to_string') + import + end function fftwl_export_wisdom_to_string + + subroutine fftwl_export_wisdom(write_char,data) bind(C, name='fftwl_export_wisdom') + import + type(C_FUNPTR), value :: write_char + type(C_PTR), value :: data + end subroutine fftwl_export_wisdom + + integer(C_INT) function fftwl_import_system_wisdom() bind(C, name='fftwl_import_system_wisdom') + import + end function fftwl_import_system_wisdom + + integer(C_INT) function fftwl_import_wisdom_from_filename(filename) bind(C, name='fftwl_import_wisdom_from_filename') + import + character(C_CHAR), dimension(*), intent(in) :: filename + end function fftwl_import_wisdom_from_filename + + integer(C_INT) function fftwl_import_wisdom_from_file(input_file) bind(C, name='fftwl_import_wisdom_from_file') + import + type(C_PTR), value :: input_file + end function fftwl_import_wisdom_from_file + + integer(C_INT) function fftwl_import_wisdom_from_string(input_string) bind(C, name='fftwl_import_wisdom_from_string') + import + character(C_CHAR), dimension(*), intent(in) :: input_string + end function fftwl_import_wisdom_from_string + + integer(C_INT) function fftwl_import_wisdom(read_char,data) bind(C, name='fftwl_import_wisdom') + import + type(C_FUNPTR), value :: read_char + type(C_PTR), value :: data + end function fftwl_import_wisdom + + subroutine fftwl_fprint_plan(p,output_file) bind(C, name='fftwl_fprint_plan') + import + type(C_PTR), value :: p + type(C_PTR), value :: output_file + end subroutine fftwl_fprint_plan + + subroutine fftwl_print_plan(p) bind(C, name='fftwl_print_plan') + import + type(C_PTR), value :: p + end subroutine fftwl_print_plan + + type(C_PTR) function fftwl_malloc(n) bind(C, name='fftwl_malloc') + import + integer(C_SIZE_T), value :: n + end function fftwl_malloc + + type(C_PTR) function fftwl_alloc_real(n) bind(C, name='fftwl_alloc_real') + import + integer(C_SIZE_T), value :: n + end function fftwl_alloc_real + + type(C_PTR) function fftwl_alloc_complex(n) bind(C, name='fftwl_alloc_complex') + import + integer(C_SIZE_T), value :: n + end function fftwl_alloc_complex + + subroutine fftwl_free(p) bind(C, name='fftwl_free') + import + type(C_PTR), value :: p + end subroutine fftwl_free + + subroutine fftwl_flops(p,add,mul,fmas) bind(C, name='fftwl_flops') + import + type(C_PTR), value :: p + real(C_DOUBLE), intent(out) :: add + real(C_DOUBLE), intent(out) :: mul + real(C_DOUBLE), intent(out) :: fmas + end subroutine fftwl_flops + + real(C_DOUBLE) function fftwl_estimate_cost(p) bind(C, name='fftwl_estimate_cost') + import + type(C_PTR), value :: p + end function fftwl_estimate_cost + + real(C_DOUBLE) function fftwl_cost(p) bind(C, name='fftwl_cost') + import + type(C_PTR), value :: p + end function fftwl_cost + + end interface diff --git a/fftw_benchmark/main.F90 b/fftw_benchmark/main.F90 new file mode 100644 index 0000000..dd16f96 --- /dev/null +++ b/fftw_benchmark/main.F90 @@ -0,0 +1,67 @@ +! A simple benchmark for FFTW. +! +! Tests real-to-complex transform. Uses single-precision. +! +! Based on https://gist.github.com/appleparan/c048c44668ede7ef28ba63c660b6dcf3. +program main + use ISO_C_BINDING + implicit none + + include 'fftw3.f03.h' + + ! Size of FFTW input/output array + integer, parameter :: n = 10000 + + ! Number of times to repeat FFT cycle + integer, parameter :: n_repeats = 1000 + + ! Storage array for input/output + real(4) :: test_in(n+2) + + ! FFTW plan variables + integer(8) :: plan_c2r, plan_r2c + + ! Timing variables + integer :: tic, toc, t_rate + + ! Loop indices + integer :: i, j + + ! Create FFTW plans for direct and inverse transforms + call sfftw_plan_dft_r2c_1d(plan_r2c, n, test_in, test_in, FFTW_MEASURE) + call sfftw_plan_dft_c2r_1d(plan_c2r, n, test_in, test_in, FFTW_MEASURE) + + ! Initialize input array with random numbers + do i = 1, n + call random_number(test_in(i)) + end do + + ! Print slice of input + print *, "IN(1:5) before: " + write(*, *) (test_in(i),i = 1,5) + write(*, *) "" + + ! Run n_repeats direct/inverse FFT cycles + call system_clock(tic) + do i = 1, n_repeats + call sfftw_execute_dft_r2c(plan_r2c, test_in, test_in) + + call sfftw_execute_dft_c2r(plan_c2r, test_in, test_in) + + test_in = test_in / n + end do + call system_clock(toc, t_rate) + + ! Print slice of output + print *, "IN(1:5) after: " + write(*, *) (test_in(i),i = 1,5) + write(*, *) "" + + ! Print wallclock time + write (*,*) "Took", (toc - tic) / real(t_rate,8), "seconds" + write(*, *) "" + + ! Destroy both plans + call sfftw_destroy_plan(plan_r2c) + call sfftw_destroy_plan(plan_c2r) +end program