57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
|
/*
|
||
|
|
* This file is part of GNU CC.
|
||
|
|
*
|
||
|
|
* GNU CC 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 2, or (at your
|
||
|
|
* option) any later version.
|
||
|
|
*
|
||
|
|
* GNU CC 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.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public
|
||
|
|
* License along with GNU CC; see the file COPYING. If not, write
|
||
|
|
* to the Free Software Foundation, 59 Temple Place - Suite 330,
|
||
|
|
* Boston, MA 02111-1307, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
|
||
|
|
#if !defined(CFG_NIOS_MULT_HW) && !defined(CFG_NIOS_MULT_MSTEP)
|
||
|
|
|
||
|
|
#include "math.h"
|
||
|
|
|
||
|
|
USItype __mulsi3 (USItype a, USItype b)
|
||
|
|
{
|
||
|
|
USItype c = 0;
|
||
|
|
|
||
|
|
while (a != 0) {
|
||
|
|
if (a & 1)
|
||
|
|
c += b;
|
||
|
|
a >>= 1;
|
||
|
|
b <<= 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return c;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
UHItype __mulhi3 (UHItype a, UHItype b)
|
||
|
|
{
|
||
|
|
UHItype c = 0;
|
||
|
|
|
||
|
|
while (a != 0) {
|
||
|
|
if (a & 1)
|
||
|
|
c += b;
|
||
|
|
a >>= 1;
|
||
|
|
b <<= 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return c;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /*!defined(CFG_NIOS_MULT_HW) && !defined(CFG_NIOS_MULT_MSTEP) */
|