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| author | Alejandro Colomar <alx.manpages@gmail.com> | 2022-09-09 14:15:08 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx.manpages@gmail.com> | 2022-09-09 14:15:08 +0200 |
| commit | 96e72ec1fbadd13cbcbc2b263540e4f5e9e09d7c (patch) | |
| tree | 70686b943e33a6e939ad265acb7ddfef70b91f32 /man/man3/signbit.3 | |
| parent | 8f4ed6463206e8ede815c72085c7305dafc2e4fc (diff) | |
| download | man-pages-96e72ec1fbadd13cbcbc2b263540e4f5e9e09d7c.tar.gz | |
Revert "src.mk, All pages: Move man* to man/"
This reverts commit 70ac1c4785fc1e158ab2349a962dba2526bf4fbc.
Link: <https://lore.kernel.org/linux-man/YxcV4h+Xn7cd6+q2@pevik/T/>
Reported-by: Petr Vorel <pvorel@suse.cz>
Reported-by: Jakub Wilk <jwilk@jwilk.net>
Cc: Stefan Puiu <stefan.puiu@gmail.com>
Signed-off-by: Alex Colomar <alx.manpages@gmail.com>
Diffstat (limited to 'man/man3/signbit.3')
| -rw-r--r-- | man/man3/signbit.3 | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/man/man3/signbit.3 b/man/man3/signbit.3 deleted file mode 100644 index 05285e37a9..0000000000 --- a/man/man3/signbit.3 +++ /dev/null @@ -1,78 +0,0 @@ -.\" 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, copyright Free Software Foundation -.\" -.TH SIGNBIT 3 2021-03-22 "Linux man-pages (unreleased)" -.SH NAME -signbit \- test sign of a real floating-point number -.SH LIBRARY -Math library -.RI ( libm ", " \-lm ) -.SH SYNOPSIS -.nf -.B "#include <math.h>" -.PP -.BI "int signbit(" x ");" -.fi -.PP -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.PP -.BR signbit (): -.nf - _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L -.fi -.SH DESCRIPTION -.BR signbit () -is a generic macro which can work on all real floating-point types. -It returns a nonzero value if the value of -.I x -has its sign bit set. -.PP -This is not the same as -.IR "x < 0.0" , -because IEEE 754 floating point allows zero to be signed. -The comparison -.I \-0.0\~<\~0.0 -is false, but -.I signbit(\-0.0) -will return a nonzero value. -.PP -NaNs and infinities have a sign bit. -.SH RETURN VALUE -The -.BR signbit () -macro returns nonzero if the sign of -.I x -is negative; otherwise it returns zero. -.SH ERRORS -No errors occur. -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.ad l -.nh -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.BR signbit () -T} Thread safety MT-Safe -.TE -.hy -.ad -.sp 1 -.SH STANDARDS -POSIX.1-2001, POSIX.1-2008, C99. -This function is defined in IEC 559 (and the appendix with -recommended functions in IEEE 754/IEEE 854). -.SH SEE ALSO -.BR copysign (3) |