C fmod() function

C fmod() function - Calculate Floating-Point remainder

Syntax:

double fmod(double x, double y)

The fmod() function is used to calculate the floating-point remainder of x/y. The absolute value of the result is always less than the absolute value of y and the result will have the same sign as x.

Parameters:

Return value from fmod()

• Returns the floating-point remainder of x/y.
• If y is zero or if x/y causes an overflow, fmod() returns 0.

Example: fmod() function

The following example shows the usage of fmod() function.

#include <math.h>
#include <stdio.h>
 
int main(void)
{
   double x, y, result;
   x = 200.0;
   y = 7.0;
   printf("Before applying fmod()");
   printf("\nx = %lf", x);
   printf("\ny = %lf", y);    
   result = fmod(x,y);
   printf("\n\nAfter applying fmod()");
   printf("\nResult = %lf", result);
   x = -45.0;
   y = 4.0;
   printf("\n\nBefore applying fmod()");
   printf("\nx = %lf", x);
   printf("\ny = %lf", y);    
   result = fmod(x,y);
   printf("\n\nAfter applying fmod()");
   printf("\nResult = %lf", result);
   
}

Output:

Before applying fmod()
x = 200.000000
y = 7.000000

After applying fmod()
Result = 4.000000

Before applying fmod()
x = -45.000000
y = 4.000000

After applying fmod()
Result = -1.000000

C Programming Code Editor:

Previous C Programming: C floor()
Next C Programming: C math.h Home