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authorIan Moffett <ian@osmora.org>2024-03-07 17:28:52 -0500
committerIan Moffett <ian@osmora.org>2024-03-07 18:24:51 -0500
commitf5e48e94a2f4d4bbd6e5628c7f2afafc6dbcc459 (patch)
tree93b156621dc0303816b37f60ba88051b702d92f6 /lib/mlibc/options/ansi/generic/complex/casin.c
parentbd5969fc876a10b18613302db7087ef3c40f18e1 (diff)
build: Build mlibc + add distclean target
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'lib/mlibc/options/ansi/generic/complex/casin.c')
-rw-r--r--lib/mlibc/options/ansi/generic/complex/casin.c165
1 files changed, 0 insertions, 165 deletions
diff --git a/lib/mlibc/options/ansi/generic/complex/casin.c b/lib/mlibc/options/ansi/generic/complex/casin.c
deleted file mode 100644
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--- a/lib/mlibc/options/ansi/generic/complex/casin.c
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@@ -1,165 +0,0 @@
-/* $NetBSD: casin.c,v 1.1 2007/08/20 16:01:31 drochner Exp $ */
-
-/*-
- * Copyright (c) 2007 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software written by Stephen L. Moshier.
- * It is redistributed by the NetBSD Foundation by permission of the author.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * imported and modified include for newlib 2010/10/03
- * Marco Atzeri <marco_atzeri@yahoo.it>
- */
-
-/*
-FUNCTION
- <<casin>>, <<casinf>>---complex arc sine
-
-INDEX
- casin
-INDEX
- casinf
-
-ANSI_SYNOPSIS
- #include <complex.h>
- double complex casin(double complex <[z]>);
- float complex casinf(float complex <[z]>);
-
-
-DESCRIPTION
- These functions compute the complex arc sine of <[z]>,
- with branch cuts outside the interval [-1, +1] along the real axis.
-
- <<casinf>> is identical to <<casin>>, except that it performs
- its calculations on <<floats complex>>.
-
-RETURNS
- @ifnottex
- These functions return the complex arc sine value, in the range
- of a strip mathematically unbounded along the imaginary axis
- and in the interval [-pi/2, +pi/2] along the real axis.
- @end ifnottex
- @tex
- These functions return the complex arc sine value, in the range
- of a strip mathematically unbounded along the imaginary axis
- and in the interval [$-\pi/2$, $+\pi/2$] along the real axis.
- @end tex
-
-PORTABILITY
- <<casin>> and <<casinf>> are ISO C99
-
-QUICKREF
- <<casin>> and <<casinf>> are ISO C99
-
-*/
-
-
-#include <complex.h>
-#include <math.h>
-
-#ifdef __weak_alias
-__weak_alias(casin, _casin)
-#endif
-
-double complex
-casin(double complex z)
-{
- double complex w;
- double complex ca, ct, zz, z2;
- double x, y;
-
- x = creal(z);
- y = cimag(z);
-
-#if 0 /* MD: test is incorrect, casin(>1) is defined */
- if (y == 0.0) {
- if (fabs(x) > 1.0) {
- w = M_PI_2 + 0.0 * I;
-#if 0
- mtherr ("casin", DOMAIN);
-#endif
- } else {
- w = asin(x) + 0.0 * I;
- }
- return w;
- }
-#endif
-
-/* Power series expansion */
-/*
-b = cabs(z);
-if( b < 0.125 )
-{
-z2.r = (x - y) * (x + y);
-z2.i = 2.0 * x * y;
-
-cn = 1.0;
-n = 1.0;
-ca.r = x;
-ca.i = y;
-sum.r = x;
-sum.i = y;
-do
- {
- ct.r = z2.r * ca.r - z2.i * ca.i;
- ct.i = z2.r * ca.i + z2.i * ca.r;
- ca.r = ct.r;
- ca.i = ct.i;
-
- cn *= n;
- n += 1.0;
- cn /= n;
- n += 1.0;
- b = cn/n;
-
- ct.r *= b;
- ct.i *= b;
- sum.r += ct.r;
- sum.i += ct.i;
- b = fabs(ct.r) + fabs(ct.i);
- }
-while( b > MACHEP );
-w->r = sum.r;
-w->i = sum.i;
-return;
-}
-*/
-
-
- ca = x + y * I;
- ct = ca * I;
- /* sqrt( 1 - z*z) */
- /* cmul( &ca, &ca, &zz ) */
- /*x * x - y * y */
- zz = (x - y) * (x + y) + (2.0 * x * y) * I;
-
- zz = 1.0 - creal(zz) - cimag(zz) * I;
- z2 = csqrt(zz);
-
- zz = ct + z2;
- zz = clog(zz);
- /* multiply by 1/i = -i */
- w = zz * (-1.0 * I);
- return w;
-}