fmod()

Computes a remainder after division.

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

Parameter

x

The dividend.

y

The divisor.

Remarks

These functions return, when possible, the value r, where x = i y + r for some integer i that allows |r | < |y|. The sign of r matches the sign of x.

This facility may not be available on configurations of the EWL that run on platforms that do not have floating-point math capabilities.

Listing: Example of fmod() usage


#include <math.h>

#include <stdio.h>

int main(void)

{

double x = -54.4, y = 10.0;

printf("Remainder of %f / %f = %f.\n", x, y, fmod(x, y));

return 0;

}

Output:

Remainder of -54.400000 / 10.000000 = -4.400000.