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d876f53279
1999-12-29 Ulrich Drepper <drepper@cygnus.com> * soft-fp/*: Tons of new files to implement floating-point arithmetic in software. Contributed by Richard Henderson, Jakub Jelinek and others.
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/* Software floating-point emulation.
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(*c) = (*a) + (*b)
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Copyright (C) 1997,1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson (rth@cygnus.com) and
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Jakub Jelinek (jj@ultra.linux.cz).
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "soft-fp.h"
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#include "quad.h"
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void _Qp_add(long double *c, const long double *a, const long double *b)
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{
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FP_DECL_EX;
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FP_DECL_Q(A); FP_DECL_Q(B); FP_DECL_Q(C);
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FP_INIT_ROUNDMODE;
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FP_UNPACK_QP(A, a);
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FP_UNPACK_QP(B, b);
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FP_ADD_Q(C, A, B);
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FP_PACK_QP(c, C);
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QP_HANDLE_EXCEPTIONS(__asm (
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"ldd [%1], %%f52
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ldd [%1+8], %%f54
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ldd [%2], %%f56
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ldd [%2+8], %%f58
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faddq %%f52, %%f56, %%f60
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std %%f60, [%0]
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std %%f62, [%0+8]
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" : : "r" (c), "r" (a), "r" (b) : QP_CLOBBER));
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}
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