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-rw-r--r--math/s_clogf.c116
1 files changed, 0 insertions, 116 deletions
diff --git a/math/s_clogf.c b/math/s_clogf.c
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--- a/math/s_clogf.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/* Compute complex natural logarithm.
- 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__ float
-__clogf (__complex__ float x)
-{
- __complex__ float result;
- int rcls = fpclassify (__real__ x);
- int icls = fpclassify (__imag__ x);
-
- if (__glibc_unlikely (rcls == FP_ZERO && icls == FP_ZERO))
- {
- /* Real and imaginary part are 0.0. */
- __imag__ result = signbit (__real__ x) ? M_PI : 0.0;
- __imag__ result = __copysignf (__imag__ result, __imag__ x);
- /* Yes, the following line raises an exception. */
- __real__ result = -1.0 / fabsf (__real__ x);
- }
- else if (__glibc_likely (rcls != FP_NAN && icls != FP_NAN))
- {
- /* Neither real nor imaginary part is NaN. */
- float absx = fabsf (__real__ x), absy = fabsf (__imag__ x);
- int scale = 0;
-
- if (absx < absy)
- {
- float t = absx;
- absx = absy;
- absy = t;
- }
-
- if (absx > FLT_MAX / 2.0f)
- {
- scale = -1;
- absx = __scalbnf (absx, scale);
- absy = (absy >= FLT_MIN * 2.0f ? __scalbnf (absy, scale) : 0.0f);
- }
- else if (absx < FLT_MIN && absy < FLT_MIN)
- {
- scale = FLT_MANT_DIG;
- absx = __scalbnf (absx, scale);
- absy = __scalbnf (absy, scale);
- }
-
- if (absx == 1.0f && scale == 0)
- {
- __real__ result = __log1pf (absy * absy) / 2.0f;
- math_check_force_underflow_nonneg (__real__ result);
- }
- else if (absx > 1.0f && absx < 2.0f && absy < 1.0f && scale == 0)
- {
- float d2m1 = (absx - 1.0f) * (absx + 1.0f);
- if (absy >= FLT_EPSILON)
- d2m1 += absy * absy;
- __real__ result = __log1pf (d2m1) / 2.0f;
- }
- else if (absx < 1.0f
- && absx >= 0.5f
- && absy < FLT_EPSILON / 2.0f
- && scale == 0)
- {
- float d2m1 = (absx - 1.0f) * (absx + 1.0f);
- __real__ result = __log1pf (d2m1) / 2.0f;
- }
- else if (absx < 1.0f
- && absx >= 0.5f
- && scale == 0
- && absx * absx + absy * absy >= 0.5f)
- {
- float d2m1 = __x2y2m1f (absx, absy);
- __real__ result = __log1pf (d2m1) / 2.0f;
- }
- else
- {
- float d = __ieee754_hypotf (absx, absy);
- __real__ result = __ieee754_logf (d) - scale * (float) M_LN2;
- }
-
- __imag__ result = __ieee754_atan2f (__imag__ x, __real__ x);
- }
- else
- {
- __imag__ result = __nanf ("");
- if (rcls == FP_INFINITE || icls == FP_INFINITE)
- /* Real or imaginary part is infinite. */
- __real__ result = HUGE_VALF;
- else
- __real__ result = __nanf ("");
- }
-
- return result;
-}
-#ifndef __clogf
-weak_alias (__clogf, clogf)
-#endif