mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* Software floating-point emulation.
|
|
(*c) = (long double)(a)
|
|
Copyright (C) 1997-2020 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"
|
|
|
|
void _Qp_dtoq(long double *c, const double a)
|
|
{
|
|
FP_DECL_EX;
|
|
FP_DECL_D(A);
|
|
FP_DECL_Q(C);
|
|
|
|
FP_INIT_ROUNDMODE;
|
|
FP_UNPACK_RAW_D(A, a);
|
|
#if _FP_W_TYPE_SIZE < 64
|
|
FP_EXTEND(Q,D,4,2,C,A);
|
|
#else
|
|
FP_EXTEND(Q,D,2,1,C,A);
|
|
#endif
|
|
FP_PACK_RAW_QP(c, C);
|
|
QP_HANDLE_EXCEPTIONS(__asm (
|
|
" fdtoq %1, %%f60\n"
|
|
" std %%f60, [%0]\n"
|
|
" std %%f62, [%0+8]\n"
|
|
" " : : "r" (c), "e" (a) : QP_CLOBBER));
|
|
}
|