Name
drem, dremf, dreml, remainder, remainderf, remainderl — floating-point remainder function
Synopsis
#include <math.h> /* The C99 versions */
double remainder( |
double | x, |
| double | y); |
float
remainderf( |
float | x, |
| float | y); |
long
double remainderl( |
long double | x, |
| long double | y); |
/* Obsolete synonyms */
double drem( |
double | x, |
| double | y); |
float
dremf( |
float | x, |
| float | y); |
long
double dreml( |
long double | x, |
| long double | y); |
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DESCRIPTION
The remainder() function
computes the remainder of dividing x by y. The return value is
x − n * y, where
n is the value x / y, rounded to the nearest
integer. If this quotient is 1/2 (mod 1), it is rounded to
the nearest even number (independent of the current rounding
mode). If the return value is 0, it has the sign of
x.
The drem() function does
precisely the same thing.
RETURN VALUE
The remainder() function
returns the remainder, unless y is zero, when the function
fails and errno is set.
CONFORMING TO
IEC 60559. The functions remainder(), remainderf(), and remainderl() are from C99. The function
drem() is from 4.3BSD. The
float and long
double variants dremf()
and dreml() exist on some
systems, such as Tru64 and glibc2.
COLOPHON
This page is part of release 2.79 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/.
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Copyright 1993 David Metcalfe (davidprism.demon.co.uk) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. References consulted: Linux libc source code Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) 386BSD man pages Modified 1993-07-24 by Rik Faith (faithcs.unc.edu) Modified 2002-08-10 Walter Harms (walter.harmsinformatik.uni-oldenburg.de) Modified 2003-11-18, 2004-10-05 aeb |