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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
| commit | 399644e47874bff147afb19c89228901ac39340e (patch) | |
| tree | 1c4c0b733f4c16b5783b41bebb19194a9ef62ad1 /man3/casin.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 'man3/casin.3')
| -rw-r--r-- | man3/casin.3 | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/man3/casin.3 b/man3/casin.3 new file mode 100644 index 0000000..5cce6a4 --- /dev/null +++ b/man3/casin.3 @@ -0,0 +1,58 @@ +'\" t +.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) +.\" +.\" SPDX-License-Identifier: GPL-1.0-or-later +.\" +.TH casin 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +casin, casinf, casinl \- complex arc sine +.SH LIBRARY +Math library +.RI ( libm ", " \-lm ) +.SH SYNOPSIS +.nf +.B #include <complex.h> +.PP +.BI "double complex casin(double complex " z ); +.BI "float complex casinf(float complex " z ); +.BI "long double complex casinl(long double complex " z ); +.fi +.SH DESCRIPTION +These functions calculate the complex arc sine of +.IR z . +If \fIy\ =\ casin(z)\fP, then \fIz\ =\ csin(y)\fP. +The real part of +.I y +is chosen in the interval [\-pi/2,pi/2]. +.PP +One has: +.PP +.nf + casin(z) = \-i clog(iz + csqrt(1 \- z * z)) +.fi +.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 casin (), +.BR casinf (), +.BR casinl () +T} Thread safety MT-Safe +.TE +.sp 1 +.SH STANDARDS +C11, POSIX.1-2008. +.SH HISTORY +glibc 2.1. +C99, POSIX.1-2001. +.SH SEE ALSO +.BR clog (3), +.BR csin (3), +.BR complex (7) |