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| author | Alejandro Colomar <alx@kernel.org> | 2024-04-26 15:06:49 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2024-05-02 01:24:19 +0200 |
| commit | dcde2f70372b49ec43efc5db864c9ff585d0a2dd (patch) | |
| tree | 78b9b7425130e4a5858e4c01a524d802423879ed /man/man3/finite.3 | |
| parent | 12aca537ce78a41bbcdaf485209691e10f8002d7 (diff) | |
| download | man-pages-dcde2f70372b49ec43efc5db864c9ff585d0a2dd.tar.gz | |
man/, share/mk/: Move man*/ to man/
This is a scripted change:
$ mkdir man/;
$ mv man* man/;
$ ln -st . man/man*;
$ find share/mk/ -type f \
| xargs grep -l '^MANDIR *:=' \
| xargs sed -i '/^MANDIR *:=/s,$,/man,';
$ find share/mk/dist/ -type f \
| xargs grep -l man \
| xargs sed -i 's,man%,man/%,g';
Link: <https://lore.kernel.org/linux-man/YxcV4h+Xn7cd6+q2@pevik/T/>
Cc: Petr Vorel <pvorel@suse.cz>
Cc: Jakub Wilk <jwilk@jwilk.net>
Cc: Stefan Puiu <stefan.puiu@gmail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Diffstat (limited to 'man/man3/finite.3')
| -rw-r--r-- | man/man3/finite.3 | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/man/man3/finite.3 b/man/man3/finite.3 new file mode 100644 index 0000000000..246a82a1ff --- /dev/null +++ b/man/man3/finite.3 @@ -0,0 +1,143 @@ +'\" t +.\" Copyright 2004 Andries Brouwer <aeb@cwi.nl>. +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.TH finite 3 (date) "Linux man-pages (unreleased)" +.SH NAME +finite, finitef, finitel, isinf, isinff, isinfl, isnan, isnanf, isnanl \- +BSD floating-point classification functions +.SH LIBRARY +Math library +.RI ( libm ", " \-lm ) +.SH SYNOPSIS +.nf +.B #include <math.h> +.P +.BI "int finite(double " x ); +.BI "int finitef(float " x ); +.BI "int finitel(long double " x ); +.P +.BI "int isinf(double " x ); +.BI "int isinff(float " x ); +.BI "int isinfl(long double " x ); +.P +.BI "int isnan(double " x ); +.BI "int isnanf(float " x ); +.BI "int isnanl(long double " x ); +.fi +.P +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.P +.BR finite (), +.BR finitef (), +.BR finitel (): +.nf + /* glibc >= 2.19: */ _DEFAULT_SOURCE + || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE +.P +.BR isinf (): + _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE + || /* glibc >= 2.19: */ _DEFAULT_SOURCE + || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE +.fi +.P +.BR isinff (), +.BR isinfl (): +.nf + /* glibc >= 2.19: */ _DEFAULT_SOURCE + || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE +.fi +.P +.BR isnan (): +.nf + _XOPEN_SOURCE || _ISOC99_SOURCE + || /* glibc >= 2.19: */ _DEFAULT_SOURCE + || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE +.fi +.P +.BR isnanf (), +.BR isnanl (): +.nf + _XOPEN_SOURCE >= 600 + || /* glibc >= 2.19: */ _DEFAULT_SOURCE + || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE +.fi +.SH DESCRIPTION +The +.BR finite (), +.BR finitef (), +and +.BR finitel () +functions return a nonzero value if +.I x +is neither infinite +nor a "not-a-number" (NaN) value, and 0 otherwise. +.P +The +.BR isnan (), +.BR isnanf (), +and +.BR isnanl () +functions return a nonzero value if +.I x +is a NaN value, +and 0 otherwise. +.P +The +.BR isinf (), +.BR isinff (), +and +.BR isinfl () +functions return 1 if +.I x +is positive infinity, \-1 if +.I x +is negative infinity, and 0 otherwise. +.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 finite (), +.BR finitef (), +.BR finitel (), +.BR isinf (), +.BR isinff (), +.BR isinfl (), +.BR isnan (), +.BR isnanf (), +.BR isnanl () +T} Thread safety MT-Safe +.TE +.SH NOTES +Note that these functions are obsolete. +C99 defines macros +.BR isfinite (), +.BR isinf (), +and +.BR isnan () +(for all types) replacing them. +Further note that the C99 +.BR isinf () +has weaker guarantees on the return value. +See +.BR fpclassify (3). +.\" +.\" finite* not on HP-UX; they exist on Tru64. +.\" .SH HISTORY +.\" The +.\" .BR finite () +.\" function occurs in 4.3BSD. +.\" see IEEE.3 in the 4.3BSD manual +.SH SEE ALSO +.BR fpclassify (3) |