fabs

NAME

fabs, fabsf, fabsl - absolute value of floating-point number

#include <math.h>
 I double fabs(double  x );

I float fabsf(float  x );

I long double fabsl(long double  x );

Link with -lm.

The R fabs () functions return the absolute value of the floating-point number x.

No errors can occur.

The R fabs () function conforms to SVr4, POSIX.1-2001, 4.3BSD, C89. The other functions are from C99.