 remquo(3)  phpMan
REMQUO(3) Linux Programmer's Manual REMQUO(3)
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);
Link with lm.
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
remquo(), remquof(), remquol():
_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 quo‐
tient 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 floatingpoint exception (FE_INVALID) is raised.
These functions do not set errno.
VERSIONS
These functions first appeared in glibc in version 2.1.
ATTRIBUTES
Multithreading (see pthreads(7))
The remquo(), remquof(), and remquol() functions are threadsafe.
CONFORMING TO
C99, POSIX.12001.
SEE ALSO
fmod(3), logb(3), remainder(3)
COLOPHON
This page is part of release 3.74 of the Linux manpages project. A description of the
project, information about reporting bugs, and the latest version of this page, can be
found at http://www.kernel.org/doc/manpages/.
GNU 20140510 REMQUO(3)
