fmod

fmod

Floating-Point Conversion: Modulus

Portability: ISO/ANSI C conforming, UNIX compatible

SYNOPSIS
DESCRIPTION
RETURN VALUE
EXAMPLE
RELATED FUNCTIONS
SEE ALSO

SYNOPSIS

#include <math.h>

double fmod(double y, double z);

DESCRIPTION

fmod determines the remainder when a real value y is divided by a real value z to produce an integer i . This function satisfies these relationships:

                       result x
y = i * z + x,        |x| < |y|

This function performs the same operation for double arguments as the % operator does for int arguments.

RETURN VALUE

fmod returns the remainder of the division. If z is 0, the value returned is 0. Otherwise, the returned value has the same sign as y and is less than z .

EXAMPLE

#include <math.h>
#include <stdio.h>

main()
{
   float dollars;
   float leftovers;

   puts("Enter number of dollars");
   scanf("%f", &dollars);

   leftovers = fmod(dollars, .05);
   printf("$ %.2f contains at least ", dollars);
   printf(" %.2f in pennies\n", leftovers);
}

RELATED FUNCTIONS

modf

SEE ALSO

Mathematical Functions

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