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Manual Reference Pages  - FMOD (3)

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fmod, fmodf, fmodl - floating-point remainder function

CONTENTS

Synopsis
Description
Errors

#include <math.h> 



double fmod(double x, double y); 



float fmodf(float x, float y); 



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

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.

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

EDOM	The denominator y is zero.

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

remainder(3)

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