mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-09 23:00:07 +00:00
275607a07f
In https://gcc.gnu.org/r13-3292 I've added brain format support (std::bfloat16_t) on the GCC side, but as glibc has the master copy of soft-fp, the following patch adds the files from that commit and from https://gcc.gnu.org/r13-6598 and https://gcc.gnu.org/r13-6622 The files are not used by glibc right now.
49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
/* Software floating-point emulation.
|
|
Truncate IEEE single into bfloat16.
|
|
Copyright (C) 2022-2024 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.
|
|
|
|
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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include "soft-fp.h"
|
|
#include "brain.h"
|
|
#include "single.h"
|
|
|
|
BFtype
|
|
__truncsfbf2 (SFtype a)
|
|
{
|
|
FP_DECL_EX;
|
|
FP_DECL_S (A);
|
|
FP_DECL_B (R);
|
|
BFtype r;
|
|
|
|
FP_INIT_ROUNDMODE;
|
|
FP_UNPACK_SEMIRAW_S (A, a);
|
|
FP_TRUNC (B, S, 1, 1, R, A);
|
|
FP_PACK_SEMIRAW_B (r, R);
|
|
FP_HANDLE_EXCEPTIONS;
|
|
|
|
return r;
|
|
}
|