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/* Software floating-point emulation.
Return (double)(*a)
Copyright (C) 1997-2019 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, see
<https://www.gnu.org/licenses/>. */
#include "soft-fp.h"
#include "double.h"
#include "quad.h"
double _Qp_qtod(const long double *a)
{
FP_DECL_EX;
FP_DECL_Q(A);
FP_DECL_D(R);
double r;
FP_INIT_ROUNDMODE;
FP_UNPACK_SEMIRAW_QP(A, a);
#if _FP_W_TYPE_SIZE < 64
FP_TRUNC(D,Q,2,4,R,A);
#else
FP_TRUNC(D,Q,1,2,R,A);
#endif
FP_PACK_SEMIRAW_D(r, R);
QP_HANDLE_EXCEPTIONS(__asm (
" ldd [%1], %%f52\n"
" ldd [%1+8], %%f54\n"
" fqtod %%f52, %0\n"
" " : "=&e" (r) : "r" (a) : QP_CLOBBER));
return r;
}
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