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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:43:11 +0000 |
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| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:43:11 +0000 |
| commit | fc22b3d6507c6745911b9dfcc68f1e665ae13dbc (patch) | |
| tree | ce1e3bce06471410239a6f41282e328770aa404a /upstream/archlinux/man3/atan.3 | |
| parent | Initial commit. (diff) | |
| download | manpages-l10n-fc22b3d6507c6745911b9dfcc68f1e665ae13dbc.tar.xz manpages-l10n-fc22b3d6507c6745911b9dfcc68f1e665ae13dbc.zip | |
Adding upstream version 4.22.0.upstream/4.22.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'upstream/archlinux/man3/atan.3')
| -rw-r--r-- | upstream/archlinux/man3/atan.3 | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/upstream/archlinux/man3/atan.3 b/upstream/archlinux/man3/atan.3 new file mode 100644 index 00000000..5b923469 --- /dev/null +++ b/upstream/archlinux/man3/atan.3 @@ -0,0 +1,103 @@ +'\" 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 2002-07-27 by Walter Harms +.\" (walter.harms@informatik.uni-oldenburg.de) +.\" +.TH atan 3 2023-10-31 "Linux man-pages 6.06" +.SH NAME +atan, atanf, atanl \- arc tangent function +.SH LIBRARY +Math library +.RI ( libm ", " \-lm ) +.SH SYNOPSIS +.nf +.B #include <math.h> +.P +.BI "double atan(double " x ); +.BI "float atanf(float " x ); +.BI "long double atanl(long double " x ); +.P +.fi +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.P +.BR atanf (), +.BR atanl (): +.nf + _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L + || /* Since glibc 2.19: */ _DEFAULT_SOURCE + || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE +.fi +.SH DESCRIPTION +These functions calculate the principal value of the arc tangent of +.IR x ; +that is the value whose tangent is +.IR x . +.SH RETURN VALUE +On success, these functions return the principal value of the arc tangent of +.I x +in radians; the return value is in the range [\-pi/2,\ pi/2]. +.P +If +.I x +is a NaN, a NaN is returned. +.P +If +.I x +is +0 (\-0), ++0 (\-0) is returned. +.P +If +.I x +is positive infinity (negative infinity), +pi/2 (\-pi/2) is returned. +.\" +.\" POSIX.1-2001 documents an optional range error for subnormal x; +.\" glibc 2.8 does not do this. +.SH ERRORS +No errors occur. +.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 atan (), +.BR atanf (), +.BR atanl () +T} Thread safety MT-Safe +.TE +.SH STANDARDS +C11, POSIX.1-2008. +.SH HISTORY +C99, POSIX.1-2001. +.P +The variant returning +.I double +also conforms to +SVr4, 4.3BSD, C89. +.SH SEE ALSO +.BR acos (3), +.BR asin (3), +.BR atan2 (3), +.BR carg (3), +.BR catan (3), +.BR cos (3), +.BR sin (3), +.BR tan (3) |