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Diffstat (limited to 'math/s_catan_template.c')
| -rw-r--r-- | math/s_catan_template.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/math/s_catan_template.c b/math/s_catan_template.c deleted file mode 100644 index dce613f77d..0000000000 --- a/math/s_catan_template.c +++ /dev/null @@ -1,145 +0,0 @@ -/* Return arc tangent of complex float type. - Copyright (C) 1997-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 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, see - <http://www.gnu.org/licenses/>. */ - -#include <complex.h> -#include <math.h> -#include <math_private.h> -#include <float.h> - -CFLOAT -M_DECL_FUNC (__catan) (CFLOAT x) -{ - CFLOAT res; - int rcls = fpclassify (__real__ x); - int icls = fpclassify (__imag__ x); - - if (__glibc_unlikely (rcls <= FP_INFINITE || icls <= FP_INFINITE)) - { - if (rcls == FP_INFINITE) - { - __real__ res = M_COPYSIGN (M_MLIT (M_PI_2), __real__ x); - __imag__ res = M_COPYSIGN (0, __imag__ x); - } - else if (icls == FP_INFINITE) - { - if (rcls >= FP_ZERO) - __real__ res = M_COPYSIGN (M_MLIT (M_PI_2), __real__ x); - else - __real__ res = M_NAN; - __imag__ res = M_COPYSIGN (0, __imag__ x); - } - else if (icls == FP_ZERO || icls == FP_INFINITE) - { - __real__ res = M_NAN; - __imag__ res = M_COPYSIGN (0, __imag__ x); - } - else - { - __real__ res = M_NAN; - __imag__ res = M_NAN; - } - } - else if (__glibc_unlikely (rcls == FP_ZERO && icls == FP_ZERO)) - { - res = x; - } - else - { - if (M_FABS (__real__ x) >= 16 / M_EPSILON - || M_FABS (__imag__ x) >= 16 / M_EPSILON) - { - __real__ res = M_COPYSIGN (M_MLIT (M_PI_2), __real__ x); - if (M_FABS (__real__ x) <= 1) - __imag__ res = 1 / __imag__ x; - else if (M_FABS (__imag__ x) <= 1) - __imag__ res = __imag__ x / __real__ x / __real__ x; - else - { - FLOAT h = M_HYPOT (__real__ x / 2, __imag__ x / 2); - __imag__ res = __imag__ x / h / h / 4; - } - } - else - { - FLOAT den, absx, absy; - - absx = M_FABS (__real__ x); - absy = M_FABS (__imag__ x); - if (absx < absy) - { - FLOAT t = absx; - absx = absy; - absy = t; - } - - if (absy < M_EPSILON / 2) - { - den = (1 - absx) * (1 + absx); - if (den == 0) - den = 0; - } - else if (absx >= 1) - den = (1 - absx) * (1 + absx) - absy * absy; - else if (absx >= M_LIT (0.75) || absy >= M_LIT (0.5)) - den = -M_SUF (__x2y2m1) (absx, absy); - else - den = (1 - absx) * (1 + absx) - absy * absy; - - __real__ res = M_LIT (0.5) * M_ATAN2 (2 * __real__ x, den); - - if (M_FABS (__imag__ x) == 1 - && M_FABS (__real__ x) < M_EPSILON * M_EPSILON) - __imag__ res = (M_COPYSIGN (M_LIT (0.5), __imag__ x) - * ((FLOAT) M_MLIT (M_LN2) - - M_LOG (M_FABS (__real__ x)))); - else - { - FLOAT r2 = 0, num, f; - - if (M_FABS (__real__ x) >= M_EPSILON * M_EPSILON) - r2 = __real__ x * __real__ x; - - num = __imag__ x + 1; - num = r2 + num * num; - - den = __imag__ x - 1; - den = r2 + den * den; - - f = num / den; - if (f < M_LIT (0.5)) - __imag__ res = M_LIT (0.25) * M_LOG (f); - else - { - num = 4 * __imag__ x; - __imag__ res = M_LIT (0.25) * M_LOG1P (num / den); - } - } - } - - math_check_force_underflow_complex (res); - } - - return res; -} - -declare_mgen_alias (__catan, catan) - -#if M_LIBM_NEED_COMPAT (catan) -declare_mgen_libm_compat (__catan, catan) -#endif |