Section: Linux Programmer's Manual (3)Updated: 2010-09-20Local indexUp

NAME

remquo, remquof, remquol - remainder and part of quotient

SYNOPSIS

#include <math.h>double remquo(double x, double y, int *quo); float remquof(float x, float y, int *quo); long double remquol(long double x, long double y, int *quo);

_XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L;
or
cc -std=c99

DESCRIPTION

These functions compute the remainder and part of the quotient
upon division of
x
by
y.
A few bits of the quotient are stored via the
quo
pointer.
The remainder is returned as the function result.

The value of the remainder is the same as that computed by the
remainder(3)
function.

The value stored via the
quo
pointer has the sign of
x / y
and agrees with the quotient in at least the low order 3 bits.

For example, remquo(29.0, 3.0) returns -1.0 and might store 2.
Note that the actual quotient might not fit in an integer.

RETURN VALUE

On success, these functions return the same value as
the analogous functions described in
remainder(3).

If
x
or
y
is a NaN, a NaN is returned.

If
x
is an infinity,
and
y
is not a NaN,
a domain error occurs, and
a NaN is returned.

If
y
is zero,
and
x
is not a NaN,
a domain error occurs, and
a NaN is returned.

ERRORS

See
math_error(7)
for information on how to determine whether an error has occurred
when calling these functions.

The following errors can occur:

Domain error: x is an infinity or y is 0, and the other argument is not a NaN

An invalid floating-point exception
(FE_INVALID)
is raised.

These functions do not set
errno.

VERSIONS

These functions first appeared in glibc in version 2.1.

This page is part of release 3.27 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.