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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-17 10:52:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-17 10:52:03 +0000 |
commit | 932e4432596447eb9331cc2a2bb74a26a35b4efc (patch) | |
tree | 95161711ea07fd64f0c82d6e7943024c033dd5a8 /upstream/opensuse-tumbleweed/man3/signbit.3 | |
parent | Adding debian version 4.22.0-1. (diff) | |
download | manpages-l10n-932e4432596447eb9331cc2a2bb74a26a35b4efc.tar.xz manpages-l10n-932e4432596447eb9331cc2a2bb74a26a35b4efc.zip |
Merging upstream version 4.23.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'upstream/opensuse-tumbleweed/man3/signbit.3')
-rw-r--r-- | upstream/opensuse-tumbleweed/man3/signbit.3 | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/upstream/opensuse-tumbleweed/man3/signbit.3 b/upstream/opensuse-tumbleweed/man3/signbit.3 index 5dddad65..8c39fc02 100644 --- a/upstream/opensuse-tumbleweed/man3/signbit.3 +++ b/upstream/opensuse-tumbleweed/man3/signbit.3 @@ -7,7 +7,7 @@ .\" .\" Based on glibc infopages, copyright Free Software Foundation .\" -.TH signbit 3 2023-07-20 "Linux man-pages 6.05.01" +.TH signbit 3 2024-05-02 "Linux man-pages (unreleased)" .SH NAME signbit \- test sign of a real floating-point number .SH LIBRARY @@ -16,15 +16,15 @@ Math library .SH SYNOPSIS .nf .B "#include <math.h>" -.PP +.P .BI "int signbit(" x ");" .fi -.PP +.P .RS -4 Feature Test Macro Requirements for glibc (see .BR feature_test_macros (7)): .RE -.PP +.P .BR signbit (): .nf _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L @@ -35,7 +35,7 @@ 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 +.P This is not the same as .IR "x < 0.0" , because IEEE 754 floating point allows zero to be signed. @@ -44,7 +44,7 @@ The comparison is false, but .I signbit(\-0.0) will return a nonzero value. -.PP +.P NaNs and infinities have a sign bit. .SH RETURN VALUE The @@ -68,12 +68,11 @@ T{ .BR signbit () T} Thread safety MT-Safe .TE -.sp 1 .SH STANDARDS C11, POSIX.1-2008. .SH HISTORY POSIX.1-2001, C99. -.PP +.P This function is defined in IEC 559 (and the appendix with recommended functions in IEEE 754/IEEE 854). .SH SEE ALSO |