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drem(), dremf()

Compute the remainder of two numbers

Synopsis:

#include <math.h>

double drem ( double x,
              double y );

float dremf ( float x,
              float y );

Arguments:

x

The numerator of the division.

y

The denominator.

Library:

libm

Use the -l m option to qcc to link against this library.

Description:

The drem() and dremf() functions compute the remainder r = x - n * y, when y is nonzero. The value n is the integral value nearest the exact value x/y.

When |n - x/y| = ¹/₂, the value n is chosen to be even. But remainder(x, 0) and remainder(infinity,0) are invalid operations that produce a NAN.

The behavior of drem() is independent of the rounding mode.

Returns:

The remainder, r = x - n * y, when y is nonzero.

Classification:

Unix

See also:

remainder()