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authorPaul E. Murphy <murphyp@linux.vnet.ibm.com>2016-06-28 11:06:42 -0500
committerPaul E. Murphy <murphyp@linux.vnet.ibm.com>2016-08-19 16:47:31 -0500
commitd5602cebf1ff25ef34298a52209283879609ec16 (patch)
tree6d48955e25b06314b107b9484ae008d8b1a2c374 /math/s_catan.c
parentf6d3a72eca7558e3c52cecc8484665399eeea626 (diff)
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Convert _Complex tangent functions to generated code
This converts s_c{,a}tan{,h}{f,,l} into a single templated file c{,a}tan{,h}_template.c with the exception of alpha.
Diffstat (limited to 'math/s_catan.c')
-rw-r--r--math/s_catan.c143
1 files changed, 0 insertions, 143 deletions
diff --git a/math/s_catan.c b/math/s_catan.c
deleted file mode 100644
index 5ab4c0d..0000000
--- a/math/s_catan.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/* Return arc tangent of complex double value.
- Copyright (C) 1997-2016 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>
-
-__complex__ double
-__catan (__complex__ double x)
-{
- __complex__ double 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 = __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 (__glibc_unlikely (rcls == FP_ZERO && icls == FP_ZERO))
- {
- res = x;
- }
- else
- {
- if (fabs (__real__ x) >= 16.0 / DBL_EPSILON
- || fabs (__imag__ x) >= 16.0 / DBL_EPSILON)
- {
- __real__ res = __copysign (M_PI_2, __real__ x);
- if (fabs (__real__ x) <= 1.0)
- __imag__ res = 1.0 / __imag__ x;
- else if (fabs (__imag__ x) <= 1.0)
- __imag__ res = __imag__ x / __real__ x / __real__ x;
- else
- {
- double h = __ieee754_hypot (__real__ x / 2.0, __imag__ x / 2.0);
- __imag__ res = __imag__ x / h / h / 4.0;
- }
- }
- else
- {
- double den, absx, absy;
-
- absx = fabs (__real__ x);
- absy = fabs (__imag__ x);
- if (absx < absy)
- {
- double t = absx;
- absx = absy;
- absy = t;
- }
-
- if (absy < DBL_EPSILON / 2.0)
- {
- den = (1.0 - absx) * (1.0 + absx);
- if (den == -0.0)
- den = 0.0;
- }
- else if (absx >= 1.0)
- den = (1.0 - absx) * (1.0 + absx) - absy * absy;
- else if (absx >= 0.75 || absy >= 0.5)
- den = -__x2y2m1 (absx, absy);
- else
- den = (1.0 - absx) * (1.0 + absx) - absy * absy;
-
- __real__ res = 0.5 * __ieee754_atan2 (2.0 * __real__ x, den);
-
- if (fabs (__imag__ x) == 1.0
- && fabs (__real__ x) < DBL_EPSILON * DBL_EPSILON)
- __imag__ res = (__copysign (0.5, __imag__ x)
- * (M_LN2 - __ieee754_log (fabs (__real__ x))));
- else
- {
- double r2 = 0.0, num, f;
-
- if (fabs (__real__ x) >= DBL_EPSILON * DBL_EPSILON)
- r2 = __real__ x * __real__ x;
-
- num = __imag__ x + 1.0;
- num = r2 + num * num;
-
- den = __imag__ x - 1.0;
- den = r2 + den * den;
-
- f = num / den;
- if (f < 0.5)
- __imag__ res = 0.25 * __ieee754_log (f);
- else
- {
- num = 4.0 * __imag__ x;
- __imag__ res = 0.25 * __log1p (num / den);
- }
- }
- }
-
- math_check_force_underflow_complex (res);
- }
-
- return res;
-}
-weak_alias (__catan, catan)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__catan, __catanl)
-weak_alias (__catan, catanl)
-#endif