fdim

fdim

Defined in header <math.h>
float       fdimf( float x, float y );
(1) (since C99)
double      fdim( double x, double y );
(2) (since C99)
long double fdiml( long double x, long double y );
(3) (since C99)
Defined in header <tgmath.h>
#define fdim( x