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-rw-r--r--math/s_clog10f.c63
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diff --git a/math/s_clog10f.c b/math/s_clog10f.c
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-/* Compute complex base 10 logarithm.
- Copyright (C) 1997 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <complex.h>
-#include <math.h>
-
-#include "math_private.h"
-
-
-__complex__ float
-__clog10f (__complex__ float x)
-{
- __complex__ float result;
- int rcls = fpclassify (__real__ x);
- int icls = fpclassify (__imag__ x);
-
- if (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 (rcls != FP_NAN && icls != FP_NAN)
- {
- /* Neither real nor imaginary part is NaN. */
- __real__ result = __ieee754_log10f (__ieee754_hypotf (__real__ x,
- __imag__ x));
- __imag__ result = M_LOG10E * __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 __clog10f
-weak_alias (__clog10f, clog10f)
-#endif