diff options
Diffstat (limited to 'lib/mlibc/options/ansi/generic/complex/ctan.c')
-rw-r--r-- | lib/mlibc/options/ansi/generic/complex/ctan.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/lib/mlibc/options/ansi/generic/complex/ctan.c b/lib/mlibc/options/ansi/generic/complex/ctan.c deleted file mode 100644 index 600989d..0000000 --- a/lib/mlibc/options/ansi/generic/complex/ctan.c +++ /dev/null @@ -1,91 +0,0 @@ -/* $NetBSD: ctan.c,v 1.1 2007/08/20 16:01:37 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 - <<ctan>>, <<ctanf>>---complex tangent - -INDEX - ctan -INDEX - ctanf - -ANSI_SYNOPSIS - #include <complex.h> - double complex ctan(double complex <[z]>); - float complex ctanf(float complex <[z]>); - - -DESCRIPTION - These functions compute the complex tangent of <[z]>. - - <<ctanf>> is identical to <<ctan>>, except that it performs - its calculations on <<floats complex>>. - -RETURNS - These functions return the complex tangent value. - -PORTABILITY - <<ctan>> and <<ctanf>> are ISO C99 - -QUICKREF - <<ctan>> and <<ctanf>> are ISO C99 - -*/ - - -#include <complex.h> -#include <math.h> -#include "cephes_subr.h" - -double complex -ctan(double complex z) -{ - double complex w; - double d; - - d = cos(2.0 * creal(z)) + cosh(2.0 * cimag(z)); - - if (fabs(d) < 0.25) - d = __mlibc_ctans(z); - - if (d == 0.0) { - /* mtherr ("ctan", OVERFLOW); */ - w = HUGE_VAL + HUGE_VAL * I; - return w; - } - - w = sin(2.0 * creal(z)) / d + (sinh(2.0 * cimag(z)) / d) * I; - return w; -} |