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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | VERSIONS | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON |
REMQUO(3) Linux Programmer's Manual REMQUO(3)
remquo, remquof, remquol - remainder and part of quotient
#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():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
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.
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.
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.
These functions first appeared in glibc in version 2.1.
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼─────────┤
│remquo(), remquof(), remquol() │ Thread safety │ MT-Safe │
└───────────────────────────────┴───────────────┴─────────┘
C99, POSIX.1-2001, POSIX.1-2008.
fmod(3), logb(3), remainder(3)
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GNU 2016-03-15 REMQUO(3)
Pages that refer to this page: fma(3), remainder(3)