From 9d13fb2413921c713f83efe331e8e4d219c62c6b Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 14 Dec 2005 15:06:39 +0000 Subject: Moved to csu/errno-loc.c. --- sysdeps/generic/s_catan.c | 89 ----------------------------------------------- 1 file changed, 89 deletions(-) delete mode 100644 sysdeps/generic/s_catan.c (limited to 'sysdeps/generic/s_catan.c') diff --git a/sysdeps/generic/s_catan.c b/sysdeps/generic/s_catan.c deleted file mode 100644 index 1d0673ad6a..0000000000 --- a/sysdeps/generic/s_catan.c +++ /dev/null @@ -1,89 +0,0 @@ -/* Return arc tangent of complex double value. - Copyright (C) 1997 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 1997. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include -#include - -#include "math_private.h" - - -__complex__ double -__catan (__complex__ double x) -{ - __complex__ double res; - int rcls = fpclassify (__real__ x); - int icls = fpclassify (__imag__ x); - - if (rcls <= FP_INFINITE || icls <= FP_INFINITE) - { - if (rcls == FP_INFINITE) - { - __real__ res = __copysign (M_PI_2, __real__ x); - __imag__ res = __copysign (0.0, __imag__ x); - } - else if (icls == FP_INFINITE) - { - if (rcls >= FP_ZERO) - __real__ res = __copysign (M_PI_2, __real__ x); - else - __real__ res = __nan (""); - __imag__ res = __copysign (0.0, __imag__ x); - } - else if (icls == FP_ZERO || icls == FP_INFINITE) - { - __real__ res = __nan (""); - __imag__ res = __copysign (0.0, __imag__ x); - } - else - { - __real__ res = __nan (""); - __imag__ res = __nan (""); - } - } - else if (rcls == FP_ZERO && icls == FP_ZERO) - { - res = x; - } - else - { - double r2, num, den; - - r2 = __real__ x * __real__ x; - - den = 1 - r2 - __imag__ x * __imag__ x; - - __real__ res = 0.5 * __ieee754_atan2 (2.0 * __real__ x, den); - - num = __imag__ x + 1.0; - num = r2 + num * num; - - den = __imag__ x - 1.0; - den = r2 + den * den; - - __imag__ res = 0.25 * __ieee754_log (num / den); - } - - return res; -} -weak_alias (__catan, catan) -#ifdef NO_LONG_DOUBLE -strong_alias (__catan, __catanl) -weak_alias (__catan, catanl) -#endif -- cgit v1.2.3