1*86f9d4cdStedu.\" $OpenBSD: cacosh.3,v 1.2 2013/06/05 03:40:26 tedu Exp $ 22bfdbafeSmartynas.\" 32bfdbafeSmartynas.\" Copyright (c) 2011 Martynas Venckus <martynas@openbsd.org> 42bfdbafeSmartynas.\" 52bfdbafeSmartynas.\" Permission to use, copy, modify, and distribute this software for any 62bfdbafeSmartynas.\" purpose with or without fee is hereby granted, provided that the above 72bfdbafeSmartynas.\" copyright notice and this permission notice appear in all copies. 82bfdbafeSmartynas.\" 92bfdbafeSmartynas.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 102bfdbafeSmartynas.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 112bfdbafeSmartynas.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 122bfdbafeSmartynas.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 132bfdbafeSmartynas.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 142bfdbafeSmartynas.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 152bfdbafeSmartynas.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 162bfdbafeSmartynas.\" 17*86f9d4cdStedu.Dd $Mdocdate: June 5 2013 $ 182bfdbafeSmartynas.Dt CACOSH 3 192bfdbafeSmartynas.Os 202bfdbafeSmartynas.Sh NAME 212bfdbafeSmartynas.Nm cacosh , 222bfdbafeSmartynas.Nm cacoshf , 232bfdbafeSmartynas.Nm cacoshl 242bfdbafeSmartynas.Nd complex inverse hyperbolic cosine 252bfdbafeSmartynas.Sh SYNOPSIS 26*86f9d4cdStedu.In complex.h 272bfdbafeSmartynas.Ft double complex 282bfdbafeSmartynas.Fn cacosh "double complex z" 292bfdbafeSmartynas.Ft float complex 302bfdbafeSmartynas.Fn cacoshf "float complex z" 312bfdbafeSmartynas.Ft long double complex 322bfdbafeSmartynas.Fn cacoshl "long double complex z" 332bfdbafeSmartynas.Sh DESCRIPTION 342bfdbafeSmartynasThe 352bfdbafeSmartynas.Fn cacosh , 362bfdbafeSmartynas.Fn cacoshf 372bfdbafeSmartynasand 382bfdbafeSmartynas.Fn cacoshl 392bfdbafeSmartynasfunctions compute the complex inverse hyperbolic cosine of 402bfdbafeSmartynas.Fa z . 412bfdbafeSmartynas.Pp 422bfdbafeSmartynasFor all complex floating-point numbers 432bfdbafeSmartynas.Fa z , 442bfdbafeSmartynas.Bd -literal -offset indent 452bfdbafeSmartynascacosh(z) = i acos(z). 462bfdbafeSmartynas.Ed 472bfdbafeSmartynas.Sh RETURN VALUES 482bfdbafeSmartynasThe 492bfdbafeSmartynas.Fn cacosh , 502bfdbafeSmartynas.Fn cacoshf 512bfdbafeSmartynasand 522bfdbafeSmartynas.Fn cacoshl 532bfdbafeSmartynasfunctions return the complex inverse hyperbolic cosine of 542bfdbafeSmartynas.Fa z 552bfdbafeSmartynaswith imaginary part in the interval 562bfdbafeSmartynas.Bq -Pi, Pi , 572bfdbafeSmartynasand non-negative real part. 582bfdbafeSmartynas.Sh SEE ALSO 592bfdbafeSmartynas.Xr casinh 3 , 602bfdbafeSmartynas.Xr catanh 3 612bfdbafeSmartynas.Sh STANDARDS 622bfdbafeSmartynasThe 632bfdbafeSmartynas.Fn cacosh , 642bfdbafeSmartynas.Fn cacoshf 652bfdbafeSmartynasand 662bfdbafeSmartynas.Fn cacoshl 672bfdbafeSmartynasfunctions conform to 682bfdbafeSmartynas.St -isoC-99 . 69