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/* Software floating-point emulation.
(*c) = (*a) - (*b)
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 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 "soft-fp.h"
#include "quad.h"
void _Qp_sub(long double *c, const long double *a, const long double *b)
{
FP_DECL_EX;
FP_DECL_Q(A); FP_DECL_Q(B); FP_DECL_Q(C);
FP_INIT_ROUNDMODE;
FP_UNPACK_QP(A, a);
FP_UNPACK_QP(B, b);
FP_SUB_Q(C, A, B);
FP_PACK_QP(c, C);
QP_HANDLE_EXCEPTIONS(__asm (
"ldd [%1], %%f52
ldd [%1+8], %%f54
ldd [%2], %%f56
ldd [%2+8], %%f58
fsubq %%f52, %%f56, %%f60
std %%f60, [%0]
std %%f62, [%0+8]
" : : "r" (c), "r" (a), "r" (b) : QP_CLOBBER));
}
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