remquo, remquof, remquol

Computes the remainder of two integer values, and stores an integer value with the sign and approximate magnitude of the quotient in a location that's specified in a parameter.

Syntax

double remquo( double numer, double denom, int* quo );
float remquof( float numer, float denom, int* quo );
long double remquol( long double numer, long double denom, int* quo );
float remquo( float numer, float denom, int* quo ); /* C++ only */
long double remquo( long double numer, long double denom, int* quo ); /* C++ only */

Parameters

numer
The numerator.

denom
The denominator.

quo
A pointer to an integer to store a value that has the sign and approximate magnitude of the quotient.

Return Value

remquo returns the floating-point remainder of x / y. If the value of y is 0.0, remquo returns a quiet NaN. For information about the representation of a quiet NaN by the printf family, see printf, _printf_l, wprintf, _wprintf_l.

Remarks

The remquo function calculates the floating-point remainder f of x / y such that x = i * y + f, where i is an integer, f has the same sign as x, and the absolute value of f is less than the absolute value of y.

C++ allows overloading, so you can call overloads of remquo that take and return float or long double values. In a C program, remquo always takes two double arguments and returns a double.

Requirements

Function Required header (C) Required header (C++)
remquo, remquof, remquol <math.h> <cmath> or <math.h>

For compatibility information, see Compatibility.

Example

// crt_remquo.c
// This program displays a floating-point remainder.

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

int main( void )
{
   double w = -10.0, x = 3.0, z;
   int quo = 0;

   z = remquo(w, x, &quo);
   printf("The remainder of %.2f / %.2f is %f\n", w, x, z);
   printf("Approximate signed quotient is %d\n", quo);
}
The remainder of -10.00 / 3.00 is -1.000000
Approximate signed quotient is -3

See also

Floating-Point Support
ldiv, lldiv
imaxdiv
fmod, fmodf
remainder, remainderf, remainderl