FMOD

NAME

fmod, fmodf, fmodl - floating-point remainder function

SYNOPSIS

#include <math.h>

double fmod(double x, double y);

float fmodf(float x, float y);

long double fmodl(long double x, long double y);

DESCRIPTION

The fmod() function computes the remainder of dividing x by y. The return value is x - n * y, where n is the quotient of x / y, rounded towards zero to an integer.

RETURN VALUE

The fmod() function returns the remainder, unless y is zero, when the function fails and errno is set.

ERRORS

EDOM: The denominator y is zero.

CONFORMING TO

SVID 3, POSIX, BSD 4.3, ISO 9899. The float and the long double variants are C99 requirements.