glibc/sysdeps/libm-ieee754/s_cprojf.c
Ulrich Drepper 779ae82ecd Update.
1997-04-30 17:35  Ulrich Drepper  <drepper@cygnus.com>

	* math/libm-test.c: Implement test for exceptions.
	Partly due to Andreas Jaeger.
	(csin_test): New function.
	* sysdeps/libm-i387/s_cexp.S: Raise correct exceptions.
	* sysdeps/libm-i387/s_cexpf.S: Likewise.
	* sysdeps/libm-i387/s_cexpl.S: Likewise.
	* sysdeps/libm-ieee754/s_ccos.c: Likewise.
	* sysdeps/libm-ieee754/s_ccosf.c: Likewise.
	* sysdeps/libm-ieee754/s_ccosl.c: Likewise.
	* sysdeps/libm-ieee754/s_ccosh.c: Likewise.
	* sysdeps/libm-ieee754/s_ccoshf.c: Likewise.
	* sysdeps/libm-ieee754/s_ccoshl.c: Likewise.
	* sysdeps/libm-ieee754/s_cexp.c: Likewise.
	* sysdeps/libm-ieee754/s_cexpf.c: Likewise.
	* sysdeps/libm-ieee754/s_cexpl.c: Likewise.
	* sysdeps/libm-ieee754/s_csinh.c: Likewise.
	* sysdeps/libm-ieee754/s_csinhf.c: Likewise.
	* sysdeps/libm-ieee754/s_csinhl.c: Likewise.
	* sysdeps/libm-ieee754/s_ctanh.c: Likewise.
	* sysdeps/libm-ieee754/s_ctanhf.c: Likewise.
	* sysdeps/libm-ieee754/s_ctanhl.c: Likewise.

	* sysdeps/libm-ieee754/s_ccosh.c: Correct computation.
	* sysdeps/libm-ieee754/s_ccoshf.c: Likewise.
	* sysdeps/libm-ieee754/s_ccoshl.c: Likewise.
	* sysdeps/libm-ieee754/s_csinh.c: Likewise.
	* sysdeps/libm-ieee754/s_csinhf.c: Likewise.
	* sysdeps/libm-ieee754/s_csinhl.c: Likewise.

	* sysdeps/libm-ieee754/s_csin.c: Rewrite.
	* sysdeps/libm-ieee754/s_csinf.c: Likewise.
	* sysdeps/libm-ieee754/s_csinl.c: Likewise.

	* stdlib/random_r.c (__srandom_r): Don't use seed 0.  Use 1 in this
	case.

	* sysdeps/i386/dl-machine.h (elf_machine_load_address): Use notation
	for local label.

	* time/strftime.c (add): Respect `0' padding flag.
	Reported by Richard Stallman <rms@gnu.ai.mit.edu>.

1997-04-30 15:46  Ulrich Drepper  <drepper@cygnus.com>

	* Makeconfig (start-installed-name): Define here, not in csu/Makefile.
	Use in +link macro.
	* csu/Makefile (distribute): Add abi-note.S and abi-tag.h.
	(start-installed-name): Don't define here.
	When ELF generate file named by start-installed-name from start.o
	and abi-note.o.
	* csu/abi-note.S: New file.
	* sysdeps/stub/abi-tag.h: New file.
	* sysdpes/unix/sysv/linux/abi-tag.h: New file.
	Patches by Roland McGrath <roland@gnu.ai.mit.edu>.

1997-04-30 01:32  Ulrich Drepper  <drepper@cygnus.com>

	* manual/stdio.texi: Use @vtable where possible.
	Add TeX version of @multitable since texi2dvi cannot handle them
	correct in the moment.

	* po/de.po: Update.

1997-04-29 21:06  Ulrich Drepper  <drepper@cygnus.com>

	* Makeconfig: Don't set cross-compiling based on $(BUILD_CC) != $(CC).
	* config.make.in: Set cross-compiling from configure result.
	* configure.in: Emit definition of `cross_compiling'.
	Patches by Marcus G. Daniels <marcus@cathcart.sysc.pdx.edu>.

1997-04-27 21:50  Philip Blundell  <pjb27@cam.ac.uk>

	* sysdeps/unix/sysv/linux/net/route.h (struct in6_rtmsg): Use
	correct `int' sizes for struct members.

1997-04-29 19:14  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/libm-i387/e_powf.S Generate invalid exception correctly.
	* sysdeps/libm-i387/e_pow.S: Likewise.
	* sysdeps/libm-i387/e_powl.S: Likewise.

1997-04-23 10:08  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* math/fenv.h: Correct typos.

1997-04-28 10:04  Richard Henderson  <rth@tamu.edu>

	* sysdeps/unix/sysv/linux/alpha/clone.S: Save the function argument
	in t0 rather than a4 to avoid it being clobbered.

1997-04-27 23:52  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manual/summary.awk: Recognize @defmumblex.

	* manual/signal.texi (Miscellaneous Signals): Use @deftypevrx for
	second description header.

1997-04-27 23:29  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manual/arith.texi (Floating-Point Classes): Don't indent text,
	makeinfo doesn't like that.

1997-04-27 20:52  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* malloc/obstack.h (obstack_specify_allocation_with_arg,
	obstack_chunkfun, obstack_freefun): Fix casts.

1997-04-27 18:21  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manual/xtract-typefun.awk: Allow names with only one character.

1997-04-26 14:16  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/netinet/ip_fw.h: Use <netinet/ip_icmp.h>
	not <netinet/icmp.h>.
	Reported by Michael Deutschmann <ldeutsch@mail.netshop.net>.

1997-04-25 12:31  Ulrich Drepper  <drepper@cygnus.com>

	* csu/Makefile ($(objpfx)initfini.s): Add CPPFLAGS, CFLAGS and -g0
	to command line of compiler.
	Patch by Marcus G. Daniels <marcus@sysc.pdx.edu>.

	* sysdeps/generic/sigset.h (__sigandset, __sigorset): Fix typos.
	Patch by Marcus G. Daniels <marcus@sysc.pdx.edu>.

	* signal/signal.h (_sys_siglist, sys_siglist): Use _NSIG, not NSIG
	in declaration.
	Patch by Michael Widenius <monty@tcx.se>.

	* time/strptime.c (strptime_internal): Fix %I format specifier
	being off by one.
	Patch by Mark Kettenis <kettenis@phys.uva.nl>.

1997-04-24 12:18  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* stdlib/lcong48_r.c: Include <limits.h>.
	* stdlib/seed48_r.c: Likewise.

	* stdio-common/printf_size.c (printf_size): Correct type of
	`units' and make robust against future changes.

1997-04-23 18:58  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/libm-ieee754/s_cproj.c: Use isfinite instead of finite.
	* sysdeps/libm-ieee754/s_cprojl.c: Likewise.
	* sysdeps/libm-ieee754/s_cprojf.c: Likewise.

1997-04-23 18:53  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manual/arith.texi, manual/math.texi: Use @defmumblex for
	additional description headers.
	* manual/xtract-typefun.awk: Recognize them.

1997-04-22 15:58  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* stdio-common/printf_size.c (printf_size): Correct size of array
	units.
1997-04-30 15:51:34 +00:00

46 lines
1.5 KiB
C

/* Compute projection of complex float value to Riemann sphere.
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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. 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 (!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;
}
weak_alias (__cprojf, cprojf)