glibc/sysdeps/generic/s_cprojf.c
Richard Henderson 1705f0a392 * 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.
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.
2004-01-13 09:08:04 +00:00

50 lines
1.5 KiB
C

/* Compute projection of complex float value to Riemann sphere.
Copyright (C) 1997, 1999 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>
__complex__ float
__cprojf (__complex__ float x)
{
__complex__ float res;
if (isnan (__real__ x) && isnan (__imag__ x))
return x;
else if (!isfinite (__real__ x) || !isfinite (__imag__ x))
{
__real__ res = INFINITY;
__imag__ res = __copysignf (0.0, __imag__ x);
}
else
{
float den = __real__ x * __real__ x + __imag__ x * __imag__ x + 1.0;
__real__ res = (2.0 * __real__ x) / den;
__imag__ res = (2.0 * __imag__ x) / den;
}
return res;
}
#ifndef __cprojf
weak_alias (__cprojf, cprojf)
#endif