projects / thirdparty / man-pages.git / blame
| Commit | Line | Data |
|---|---|---|
| a1eaacb1 | 1 | '\" t |
| fea681da | 2 | .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) |
| 2297bf0e | 3 | .\" |
| 95fb8859 | 4 | .\" SPDX-License-Identifier: GPL-1.0-or-later |
| fea681da | 5 | .\" |
| 4c1c5274 | 6 | .TH casin 3 (date) "Linux man-pages (unreleased)" |
| fea681da | 7 | .SH NAME |
| c13182ef | 8 | casin, casinf, casinl \- complex arc sine |
| 2af19291 AC |
9 | .SH LIBRARY |
| 10 | Math library | |
| 8fc3b2cf | 11 | .RI ( libm ", " \-lm ) |
| fea681da | 12 | .SH SYNOPSIS |
| c7db92b9 | 13 | .nf |
| fea681da | 14 | .B #include <complex.h> |
| 68e4db0a | 15 | .PP |
| c13182ef | 16 | .BI "double complex casin(double complex " z ); |
| c13182ef | 17 | .BI "float complex casinf(float complex " z ); |
| c13182ef | 18 | .BI "long double complex casinl(long double complex " z ); |
| c7db92b9 | 19 | .fi |
| fea681da | 20 | .SH DESCRIPTION |
| 5600f73a | 21 | These functions calculate the complex arc sine of |
| 41783353 MK |
22 | .IR z . |
| 23 | If \fIy\ =\ casin(z)\fP, then \fIz\ =\ csin(y)\fP. | |
| 24 | The real part of | |
| 25 | .I y | |
| 26 | is chosen in the interval [\-pi/2,pi/2]. | |
| dd3568a1 | 27 | .PP |
| 41783353 | 28 | One has: |
| 207050fa | 29 | .PP |
| 41783353 | 30 | .nf |
| 41783353 MK |
31 | casin(z) = \-i clog(iz + csqrt(1 \- z * z)) |
| 32 | .fi | |
| 816fdf48 MS |
33 | .SH ATTRIBUTES |
| 34 | For an explanation of the terms used in this section, see | |
| 35 | .BR attributes (7). | |
| 36 | .TS | |
| 37 | allbox; | |
| c466875e | 38 | lbx lb lb |
| 816fdf48 MS |
39 | l l l. |
| 40 | Interface Attribute Value | |
| 41 | T{ | |
| 9e54434e BR |
42 | .na |
| 43 | .nh | |
| 816fdf48 MS |
44 | .BR casin (), |
| 45 | .BR casinf (), | |
| 46 | .BR casinl () | |
| 47 | T} Thread safety MT-Safe | |
| 48 | .TE | |
| c466875e | 49 | .sp 1 |
| 3113c7f3 | 50 | .SH STANDARDS |
| 4131356c AC |
51 | C11, POSIX.1-2008. |
| 52 | .SH HISTORY | |
| 53 | glibc 2.1. | |
| 54 | C99, POSIX.1-2001. | |
| 47297adb | 55 | .SH SEE ALSO |
| fea681da | 56 | .BR clog (3), |
| 587977c4 | 57 | .BR csin (3), |
| a8bda636 | 58 | .BR complex (7) |