mirror of
https://git.planet-casio.com/Lephenixnoir/OpenLibm.git
synced 2025-01-19 19:22:28 +01:00
61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
|
/* $OpenBSD: s_cacosf.c,v 1.2 2011/07/20 19:28:33 martynas Exp $ */
|
||
|
|
/*
|
||
|
|
* Copyright (c) 2008 Stephen L. Moshier <steve@moshier.net>
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify, and distribute this software for any
|
||
|
|
* purpose with or without fee is hereby granted, provided that the above
|
||
|
|
* copyright notice and this permission notice appear in all copies.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
||
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* cacosf()
|
||
|
|
*
|
||
|
|
* Complex circular arc cosine
|
||
|
|
*
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* SYNOPSIS:
|
||
|
|
*
|
||
|
|
* void cacosf();
|
||
|
|
* cmplxf z, w;
|
||
|
|
*
|
||
|
|
* cacosf( &z, &w );
|
||
|
|
*
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* DESCRIPTION:
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* w = arccos z = PI/2 - arcsin z.
|
||
|
|
*
|
||
|
|
*
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* ACCURACY:
|
||
|
|
*
|
||
|
|
* Relative error:
|
||
|
|
* arithmetic domain # trials peak rms
|
||
|
|
* IEEE -10,+10 30000 9.2e-6 1.2e-6
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <complex.h>
|
||
|
|
#include <math.h>
|
||
|
|
|
||
|
|
float complex
|
||
|
|
cacosf(float complex z)
|
||
|
|
{
|
||
|
|
float complex w;
|
||
|
|
|
||
|
|
w = casinf( z );
|
||
|
|
w = ((float)M_PI_2 - crealf (w)) - cimagf (w) * I;
|
||
|
|
return (w);
|
||
|
|
}
|