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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
commit | 399644e47874bff147afb19c89228901ac39340e (patch) | |
tree | 1c4c0b733f4c16b5783b41bebb19194a9ef62ad1 /man3/exp2.3 | |
parent | Initial commit. (diff) | |
download | manpages-399644e47874bff147afb19c89228901ac39340e.tar.xz manpages-399644e47874bff147afb19c89228901ac39340e.zip |
Adding upstream version 6.05.01.upstream/6.05.01
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | man3/exp2.3 | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/man3/exp2.3 b/man3/exp2.3 new file mode 100644 index 0000000..9b3d99c --- /dev/null +++ b/man3/exp2.3 @@ -0,0 +1,93 @@ +'\" t +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk +.\" <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" 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 (faith@cs.unc.edu) +.\" Modified 1995-08-14 by Arnt Gulbrandsen <agulbra@troll.no> +.\" Modified 2002-07-27 by Walter Harms +.\" (walter.harms@informatik.uni-oldenburg.de) +.\" +.TH exp2 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +exp2, exp2f, exp2l \- base-2 exponential function +.SH LIBRARY +Math library +.RI ( libm ", " \-lm ) +.SH SYNOPSIS +.nf +.B #include <math.h> +.PP +.BI "double exp2(double " x ); +.BI "float exp2f(float " x ); +.BI "long double exp2l(long double " x ); +.fi +.PP +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.PP +.BR exp2 (), +.BR exp2f (), +.BR exp2l (): +.nf + _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L +.fi +.SH DESCRIPTION +These functions return the value of 2 raised to the power of +.IR x . +.SH RETURN VALUE +On success, these functions return the base-2 exponential value of +.IR x . +.PP +For various special cases, including the handling of infinity and NaN, +as well as overflows and underflows, see +.BR exp (3). +.SH ERRORS +See +.BR math_error (7) +for information on how to determine whether an error has occurred +when calling these functions. +.PP +For a discussion of the errors that can occur for these functions, see +.BR exp (3). +.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 exp2 (), +.BR exp2f (), +.BR exp2l () +T} Thread safety MT-Safe +.TE +.sp 1 +.SH STANDARDS +C11, POSIX.1-2008. +.SH HISTORY +glibc 2.1. +C99, POSIX.1-2001. +.PP +The variant returning +.I double +also conforms to +SVr4, 4.3BSD. +.SH SEE ALSO +.BR cbrt (3), +.BR cexp2 (3), +.BR exp (3), +.BR exp10 (3), +.BR sqrt (3) |