REMQUO(3) Linux Programmer's Manual REMQUO(3)NAME
remquo, remquof, remquol - remainder and part of quotient
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
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 remain‐
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.
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
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
An invalid floating-point exception (FE_INVALID) is raised.
These functions do not set errno.
These functions first appeared in glibc in version 2.1.
SEE ALSOfmod(3), logb(3), remainder(3)COLOPHON
This page is part of release 3.65 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/.
GNU 2010-09-20 REMQUO(3)