fmod

Name

fmod, fmodf, fmodl
- floating-point remainder function

Library

libm.lib

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);

Return values

The fmod, fmodf, and fmodl 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. If y is zero, whether a domain error occurs or the fmod and fmodf function returns zero is implementation-defined.

Detailed description

The fmod, fmodf, and fmodl functions compute the floating-point remainder of x / y. fmodl is an alias to the function fmod.

Examples

#include <math.h>
int main()
{
   double x1 = 6.5, x2 = 2.25, y;
   y = fmod( x1, x2 );
   printf( "fmod(%f , %f) = %f\n", x1, x2, y );
   y = fmodf( x1, x2 );
   printf( "fmodf(%f , %f) = %f\n", x1, x2, y );
   y = fmodl( x1, x2 );
   printf( "fmodl(%f , %f) = %f\n", x1, x2, y );
}

Output

fmod ( 6.4, 2 ) = 2.0
fmodf( 6.4, 2 ) = 2.0
fmodl( 6.4, 2 ) = 2.0

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