fmod, fmodf, fmodl - Remainder of a division

Definition	#include <math.h> double fmod(double x, double y); float fmodf(float x, float y); (C11) long double fmodl(long double x, long double y);(C11) These functions calculate the remainder of the division x/y. The remainder has the same sign as the dividend x and its absolute value is always less than the divisor y.
Return val.	Remainder of the division x/y as a floating-point number
		if successful.
	0	if y = 0.