- NAME
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fabs - absolute value of floating-point number.
- SYNOPSIS
#include <math.h>
double fabs(double x);- DESCRIPTION
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The fabs function determines the absolute value of the floating-point number val.
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Warning
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You’ll also need to link the program against the math library (see example below) using the -lm compile/link option.
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- RETURN VALUE
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The fabs function returns the absolute value of val.
- SEE ALSO
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abs, cabs, labs
- EXAMPLE
link:src/fabs.c[role=include]- OUTPUT
$ gcc -Wall -lm fabs.c $ ./a.out fabs(10.200000) = 10.200000 fabs(-3.600000) = 3.600000