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Diffstat (limited to 'lib/mlibc/options/ansi/generic/complex/cpow.c')
| -rw-r--r-- | lib/mlibc/options/ansi/generic/complex/cpow.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/lib/mlibc/options/ansi/generic/complex/cpow.c b/lib/mlibc/options/ansi/generic/complex/cpow.c deleted file mode 100644 index b60f7be..0000000 --- a/lib/mlibc/options/ansi/generic/complex/cpow.c +++ /dev/null @@ -1,101 +0,0 @@ -/* $NetBSD: cpow.c,v 1.1 2007/08/20 16:01:35 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 - <<cpow>>, <<cpowf>>---complex power - -INDEX - cpow -INDEX - cpowf - -ANSI_SYNOPSIS - #include <complex.h> - double complex cpow(double complex <[x]>, double complex <[y]>); - float complex cpowf(float complex <[x]>, float complex <[y]>); - - -DESCRIPTION - @ifnottex - The cpow functions compute the complex power function x^y - power, with a branch cut for the first parameter along the - negative real axis. - @end ifnottex - @tex - The cpow functions compute the complex power function $x^y$ - power, with a branch cut for the first parameter along the - negative real axis. - @end tex - - <<cpowf>> is identical to <<cpow>>, except that it performs - its calculations on <<floats complex>>. - -RETURNS - The cpow functions return the complex power function value. - -PORTABILITY - <<cpow>> and <<cpowf>> are ISO C99 - -QUICKREF - <<cpow>> and <<cpowf>> are ISO C99 - -*/ - - -#include <complex.h> -#include <math.h> - -double complex -cpow(double complex a, double complex z) -{ - double complex w; - double x, y, r, theta, absa, arga; - - x = creal(z); - y = cimag(z); - absa = cabs(a); - if (absa == 0.0) { - return (0.0 + 0.0 * I); - } - arga = carg(a); - r = pow(absa, x); - theta = x * arga; - if (y != 0.0) { - r = r * exp(-y * arga); - theta = theta + y * log(absa); - } - w = r * cos(theta) + (r * sin(theta)) * I; - return w; -} |