FMOD(3)

NAME
fmod - floating-point remainder function

SYNOPSIS
#include <math.h>
double
fmod(double x, double y);
long double
fmodl(long double x, long double y);
float
fmodf(float x, float y);

DESCRIPTION
The fmod() functions compute the floating-point remainder of x/ y.

Specifically, the functions return the value x-i*y, for some integer i such that, if y is non-zero, the result has the same sign as x and magnitude less than the magnitude of y.

SPECIAL VALUES
fmod(±0, y) returns ±0 for y not zero.

fmod(x, y) returns a NaN and raises the "invalid" floating-point exception for x infinite or y zero.

fmod(x, ±infinity) returns x for x not infinite.

SEE ALSO
math(3)

STANDARDS
The fmod() functions conform to ISO/IEC 9899:1999(E).