util.h

/**
    This file is part of stixels. (https://github.com/dhernandez0/stixels).

    Copyright (c) 2016 Daniel Hernandez Juarez.

    stixels is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    stixels is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with stixels.  If not, see <http://www.gnu.org/licenses/>.

**/

#ifndef UTIL_H_
#define UTIL_H_

#define WARP_SIZE		32

static void CheckCudaErrorAux (const char *, unsigned, const char *, cudaError_t);
#define CUDA_CHECK_RETURN(value) CheckCudaErrorAux(__FILE__,__LINE__, #value, value)

/**
 * Check the return value of the CUDA runtime API call and exit
 * the application if the call has failed.
 */
static void CheckCudaErrorAux (const char *file, unsigned line, const char *statement, cudaError_t err) {
	if (err == cudaSuccess)
		return;
	std::cerr << statement<<" returned " << cudaGetErrorString(err) << "("<<err<< ") at "<<file<<":"<<line <<
			std::endl;
	exit (1);
}

__host__ __device__ __forceinline__ int divUp(int total, int grain) {
    return (total + grain - 1) / grain;
}

#endif /* UTIL_H_ */