mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 12:11:10 +00:00
1705f0a392
* sysdeps/alpha/fpu/Versions: Add __c1_c*f and c*f to GLIBC_2.3.3. * sysdeps/alpha/fpu/cabsf.c, sysdeps/alpha/fpu/cargf.c, sysdeps/alpha/fpu/cfloat-compat.h, sysdeps/alpha/fpu/cimagf.c, sysdeps/alpha/fpu/conjf.c, sysdeps/alpha/fpu/crealf.c, sysdeps/alpha/fpu/s_cacosf.c, sysdeps/alpha/fpu/s_cacoshf.c, sysdeps/alpha/fpu/s_casinf.c, sysdeps/alpha/fpu/s_casinhf.c, sysdeps/alpha/fpu/s_catanf.c, sysdeps/alpha/fpu/s_catanhf.c, sysdeps/alpha/fpu/s_ccosf.c, sysdeps/alpha/fpu/s_ccoshf.c, sysdeps/alpha/fpu/s_cexpf.c, sysdeps/alpha/fpu/s_clog10f.c, sysdeps/alpha/fpu/s_clogf.c, sysdeps/alpha/fpu/s_cpowf.c, sysdeps/alpha/fpu/s_cprojf.c, sysdeps/alpha/fpu/s_csinf.c, sysdeps/alpha/fpu/s_csinhf.c, sysdeps/alpha/fpu/s_csqrtf.c, sysdeps/alpha/fpu/s_ctanf.c, sysdeps/alpha/fpu/s_ctanhf.c: New files. * sysdeps/alpha/fpu/bits/mathdef.h: Rename complex float functions for gcc 3.3. * sysdeps/generic/s_cacosf.c, sysdeps/generic/s_cacoshf.c, sysdeps/generic/s_casinf.c, sysdeps/generic/s_casinhf.c, sysdeps/generic/s_catanf.c, sysdeps/generic/s_catanhf.c, sysdeps/generic/s_ccosf.c, sysdeps/generic/s_ccoshf.c, sysdeps/generic/s_cexpf.c, sysdeps/generic/s_clog10f.c, sysdeps/generic/s_clogf.c, sysdeps/generic/s_cpowf.c, sysdeps/generic/s_cprojf.c, sysdeps/generic/s_csinf.c, sysdeps/generic/s_csinhf.c, sysdeps/generic/s_csqrtf.c, sysdeps/generic/s_ctanf.c, sysdeps/generic/s_ctanhf.c: Don't weak_alias if the function name has been #defined. * math/cabsf.c: Move ... * sysdeps/generic/cabsf.c: ... here. * math/cargf.c: Move ... * sysdeps/generic/cargf.c: ... here. * math/cimagf.c: Move ... * sysdeps/generic/cimagf.c: ... here. * math/conjf.c: Move ... * sysdeps/generic/conjf.c: ... here. * math/crealf.c: Move ... * sysdeps/generic/crealf.c: ... here. 2004-01-13 Richard Henderson <rth@redhat.com> * Versions.def (libm): Add GLIBC_2.3.3. * sysdeps/alpha/fpu/Versions: Add __c1_c*f and c*f to GLIBC_2.3.3. * sysdeps/alpha/fpu/cabsf.c, sysdeps/alpha/fpu/cargf.c, sysdeps/alpha/fpu/cfloat-compat.h, sysdeps/alpha/fpu/cimagf.c, sysdeps/alpha/fpu/conjf.c, sysdeps/alpha/fpu/crealf.c, sysdeps/alpha/fpu/s_cacosf.c, sysdeps/alpha/fpu/s_cacoshf.c, sysdeps/alpha/fpu/s_casinf.c, sysdeps/alpha/fpu/s_casinhf.c, sysdeps/alpha/fpu/s_catanf.c, sysdeps/alpha/fpu/s_catanhf.c, sysdeps/alpha/fpu/s_ccosf.c, sysdeps/alpha/fpu/s_ccoshf.c, sysdeps/alpha/fpu/s_cexpf.c, sysdeps/alpha/fpu/s_clog10f.c, sysdeps/alpha/fpu/s_clogf.c, sysdeps/alpha/fpu/s_cpowf.c, sysdeps/alpha/fpu/s_cprojf.c, sysdeps/alpha/fpu/s_csinf.c, sysdeps/alpha/fpu/s_csinhf.c, sysdeps/alpha/fpu/s_csqrtf.c, sysdeps/alpha/fpu/s_ctanf.c, sysdeps/alpha/fpu/s_ctanhf.c: New files. * sysdeps/alpha/fpu/bits/mathdef.h: Rename complex float functions for gcc 3.3. * sysdeps/generic/s_cacosf.c, sysdeps/generic/s_cacoshf.c, sysdeps/generic/s_casinf.c, sysdeps/generic/s_casinhf.c, sysdeps/generic/s_catanf.c, sysdeps/generic/s_catanhf.c, sysdeps/generic/s_ccosf.c, sysdeps/generic/s_ccoshf.c, sysdeps/generic/s_cexpf.c, sysdeps/generic/s_clog10f.c, sysdeps/generic/s_clogf.c, sysdeps/generic/s_cpowf.c, sysdeps/generic/s_cprojf.c, sysdeps/generic/s_csinf.c, sysdeps/generic/s_csinhf.c, sysdeps/generic/s_csqrtf.c, sysdeps/generic/s_ctanf.c, sysdeps/generic/s_ctanhf.c: Don't weak_alias if the function name has been #defined. * math/cabsf.c: Move ... * sysdeps/generic/cabsf.c: ... here. * math/cargf.c: Move ... * sysdeps/generic/cargf.c: ... here. * math/cimagf.c: Move ... * sysdeps/generic/cimagf.c: ... here. * math/conjf.c: Move ... * sysdeps/generic/conjf.c: ... here. * math/crealf.c: Move ... * sysdeps/generic/crealf.c: ... here.
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/* Compute complex natural 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
|
|
__clogf (__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_logf (__ieee754_hypotf (__real__ x,
|
|
__imag__ x));
|
|
__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
|