mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-12 11:29:30 +00:00
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
|
/* libgcc routines for RL78
|
||
|
|
Copyright (C) 2005-2014 Free Software Foundation, Inc.
|
||
|
|
Contributed by Red Hat.
|
||
|
|
|
||
|
|
This file is part of GCC.
|
||
|
|
|
||
|
|
GCC is free software; you can redistribute it and/or modify it
|
||
|
|
under the terms of the GNU General Public License as published
|
||
|
|
by the Free Software Foundation; either version 3, or (at your
|
||
|
|
option) any later version.
|
||
|
|
|
||
|
|
GCC 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 General Public
|
||
|
|
License for more details.
|
||
|
|
|
||
|
|
Under Section 7 of GPL version 3, you are granted additional
|
||
|
|
permissions described in the GCC Runtime Library Exception, version
|
||
|
|
3.1, as published by the Free Software Foundation.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License and
|
||
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
||
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
||
|
|
<http://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
UINT_TYPE C3(__mul,NAME_MODE,3) (UINT_TYPE, UINT_TYPE);
|
||
|
|
UINT_TYPE
|
||
|
|
C3(__mul,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b)
|
||
|
|
{
|
||
|
|
UINT_TYPE rv = 0;
|
||
|
|
|
||
|
|
char bit;
|
||
|
|
|
||
|
|
for (bit=0; b && bit<sizeof(UINT_TYPE)*8; bit++)
|
||
|
|
{
|
||
|
|
if (b & 1)
|
||
|
|
rv += a;
|
||
|
|
a <<= 1;
|
||
|
|
b >>= 1;
|
||
|
|
}
|
||
|
|
return rv;
|
||
|
|
}
|