mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-15 04:20:28 +08:00
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/* Software floating-point emulation.
|
|
Return (float)(*a)
|
|
Copyright (C) 1997-2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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 "single.h"
|
|
#include "quad.h"
|
|
|
|
float _Qp_qtos(const long double *a)
|
|
{
|
|
FP_DECL_EX;
|
|
FP_DECL_Q(A);
|
|
FP_DECL_S(R);
|
|
float r;
|
|
|
|
FP_INIT_ROUNDMODE;
|
|
FP_UNPACK_SEMIRAW_QP(A, a);
|
|
#if _FP_W_TYPE_SIZE < 64
|
|
FP_TRUNC(S,Q,1,4,R,A);
|
|
#else
|
|
FP_TRUNC(S,Q,1,2,R,A);
|
|
#endif
|
|
FP_PACK_SEMIRAW_S(r, R);
|
|
|
|
QP_HANDLE_EXCEPTIONS(__asm (
|
|
" ldd [%1], %%f52\n"
|
|
" ldd [%1+8], %%f54\n"
|
|
" fqtos %%f52, %0\n"
|
|
" " : "=&f" (r) : "r" (a) : QP_CLOBBER));
|
|
|
|
return r;
|
|
}
|