Adding upstream version 4.22.0.upstream/4.22.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 139 insertions, 0 deletions

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+'\" t
+.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
+.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk
+.\"     <mtk.manpages@gmail.com>
+.\"
+.\" SPDX-License-Identifier: GPL-1.0-or-later
+.\"
+.\" based on glibc infopages
+.\" polished, aeb
+.\"
+.TH remquo 3 2023-07-20 "Linux man-pages 6.05.01"
+.SH NAME
+remquo, remquof, remquol \- remainder and part of quotient
+.SH LIBRARY
+Math library
+.RI ( libm ", " \-lm )
+.SH SYNOPSIS
+.nf
+.B #include <math.h>
+.PP
+.BI "double remquo(double " x ", double " y ", int *" quo );
+.BI "float remquof(float " x ", float " y ", int *" quo );
+.BI "long double remquol(long double " x ", long double " y ", int *" quo );
+.fi
+.PP
+.RS -4
+Feature Test Macro Requirements for glibc (see
+.BR feature_test_macros (7)):
+.RE
+.PP
+.BR remquo (),
+.BR remquof (),
+.BR remquol ():
+.nf
+    _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
+.fi
+.SH DESCRIPTION
+These functions compute the remainder and part of the quotient
+upon division of
+.I x
+by
+.IR y .
+A few bits of the quotient are stored via the
+.I quo
+pointer.
+The remainder is returned as the function result.
+.PP
+The value of the remainder is the same as that computed by the
+.BR remainder (3)
+function.
+.PP
+The value stored via the
+.I quo
+pointer has the sign of
+.I x\~/\~y
+and agrees with the quotient in at least the low order 3 bits.
+.PP
+For example, \fIremquo(29.0,\ 3.0)\fP returns \-1.0 and might store 2.
+Note that the actual quotient might not fit in an integer.
+.\" A possible application of this function might be the computation
+.\" of sin(x). Compute remquo(x, pi/2, &quo) or so.
+.\"
+.\" glibc, UnixWare: return 3 bits
+.\" MacOS 10: return 7 bits
+.SH RETURN VALUE
+On success, these functions return the same value as
+the analogous functions described in
+.BR remainder (3).
+.PP
+If
+.I x
+or
+.I y
+is a NaN, a NaN is returned.
+.PP
+If
+.I x
+is an infinity,
+and
+.I y
+is not a NaN,
+a domain error occurs, and
+a NaN is returned.
+.PP
+If
+.I y
+is zero,
+and
+.I x
+is not a NaN,
+a domain error occurs, and
+a NaN is returned.
+.SH ERRORS
+See
+.BR math_error (7)
+for information on how to determine whether an error has occurred
+when calling these functions.
+.PP
+The following errors can occur:
+.TP
+Domain error: \fIx\fP is an infinity or \fIy\fP is 0, \
+and the other argument is not a NaN
+.\" .I errno
+.\" is set to
+.\" .BR EDOM .
+An invalid floating-point exception
+.RB ( FE_INVALID )
+is raised.
+.PP
+These functions do not set
+.IR errno .
+.\" FIXME . Is it intentional that these functions do not set errno?
+.\" Bug raised: https://www.sourceware.org/bugzilla/show_bug.cgi?id=6802
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lbx lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.na
+.nh
+.BR remquo (),
+.BR remquof (),
+.BR remquol ()
+T}	Thread safety	MT-Safe
+.TE
+.sp 1
+.SH STANDARDS
+C11, POSIX.1-2008.
+.SH HISTORY
+glibc 2.1.
+C99, POSIX.1-2001.
+.SH SEE ALSO
+.BR fmod (3),
+.BR logb (3),
+.BR remainder (3)