mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-06 05:10:05 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* Software floating-point emulation.
|
|
Compare (*a) and (*b), return float condition code.
|
|
Copyright (C) 1997,1999 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Richard Henderson (rth@cygnus.com) and
|
|
Jakub Jelinek (jj@ultra.linux.cz).
|
|
|
|
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 "soft-fp.h"
|
|
#include "quad.h"
|
|
|
|
int _Qp_cmp(const long double *a, const long double *b)
|
|
{
|
|
FP_DECL_EX;
|
|
FP_DECL_Q(A); FP_DECL_Q(B);
|
|
int r;
|
|
|
|
FP_INIT_ROUNDMODE;
|
|
FP_UNPACK_RAW_QP(A, a);
|
|
FP_UNPACK_RAW_QP(B, b);
|
|
FP_CMP_Q(r, B, A, 3);
|
|
if (r == -1) r = 2;
|
|
if (r == 3 && (FP_ISSIGNAN_Q(A) || FP_ISSIGNAN_Q(B)))
|
|
FP_SET_EXCEPTION(FP_EX_INVALID);
|
|
QP_HANDLE_EXCEPTIONS(
|
|
__asm (
|
|
" ldd [%0], %%f52\n"
|
|
" ldd [%0+8], %%f54\n"
|
|
" ldd [%1], %%f56\n"
|
|
" ldd [%1+8], %%f58\n"
|
|
" fcmpq %%fcc3, %%f52, %%f56\n"
|
|
" " : : "r" (a), "r" (b) : QP_CLOBBER_CC);
|
|
_FPU_GETCW(_fcw);
|
|
r = ((_fcw >> 36) & 3));
|
|
|
|
return r;
|
|
}
|