mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-14 01:00:07 +00:00
55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/* Software floating-point emulation.
|
|
Truncate IEEE quad into IEEE double
|
|
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.
|
|
|
|
In addition to the permissions in the GNU Lesser General Public
|
|
License, the Free Software Foundation gives you unlimited
|
|
permission to link the compiled version of this file into
|
|
combinations with other programs, and to distribute those
|
|
combinations without any restriction coming from the use of this
|
|
file. (The Lesser General Public License restrictions do apply in
|
|
other respects; for example, they cover modification of the file,
|
|
and distribution when not linked into a combine executable.)
|
|
|
|
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"
|
|
|
|
DFtype
|
|
__trunctfdf2 (TFtype a)
|
|
{
|
|
FP_DECL_EX;
|
|
FP_DECL_Q (A);
|
|
FP_DECL_D (R);
|
|
DFtype r;
|
|
|
|
FP_INIT_ROUNDMODE;
|
|
FP_UNPACK_SEMIRAW_Q (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);
|
|
FP_HANDLE_EXCEPTIONS;
|
|
|
|
return r;
|
|
}
|