mirror of
https://github.com/openhwgroup/cvw
synced 2025-01-24 05:24:49 +00:00
100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
|
|
/*============================================================================
|
|
|
|
This C source file is part of TestFloat, Release 3e, a package of programs for
|
|
testing the correctness of floating-point arithmetic complying with the IEEE
|
|
Standard for Floating-Point, by John R. Hauser.
|
|
|
|
Copyright 2011, 2012, 2013, 2014 The Regents of the University of California.
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions, and the following disclaimer.
|
|
|
|
2. Redistributions in binary form must reproduce the above copyright notice,
|
|
this list of conditions, and the following disclaimer in the documentation
|
|
and/or other materials provided with the distribution.
|
|
|
|
3. Neither the name of the University nor the names of its contributors may
|
|
be used to endorse or promote products derived from this software without
|
|
specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
|
|
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
|
|
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
=============================================================================*/
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include "platform.h"
|
|
#include "uint128.h"
|
|
|
|
struct uint128 shortShiftLeft128( struct uint128 a, int count )
|
|
{
|
|
struct uint128 z;
|
|
|
|
z.v64 = a.v64<<count | a.v0>>(-count & 63);
|
|
z.v0 = a.v0<<count;
|
|
return z;
|
|
|
|
}
|
|
|
|
struct uint128 shortShiftRight128( struct uint128 a, int count )
|
|
{
|
|
struct uint128 z;
|
|
|
|
z.v64 = a.v64>>count;
|
|
z.v0 = a.v64<<(-count & 63) | a.v0>>count;
|
|
return z;
|
|
|
|
}
|
|
|
|
struct uint128 shortShiftRightJam128( struct uint128 a, int count )
|
|
{
|
|
int negCount;
|
|
struct uint128 z;
|
|
|
|
negCount = -count;
|
|
z.v64 = a.v64>>count;
|
|
z.v0 =
|
|
a.v64<<(negCount & 63) | a.v0>>count
|
|
| ((uint64_t) (a.v0<<(negCount & 63)) != 0);
|
|
return z;
|
|
|
|
}
|
|
|
|
struct uint128 neg128( struct uint128 a )
|
|
{
|
|
|
|
if ( a.v0 ) {
|
|
a.v64 = ~a.v64;
|
|
a.v0 = -a.v0;
|
|
} else {
|
|
a.v64 = -a.v64;
|
|
}
|
|
return a;
|
|
|
|
}
|
|
|
|
struct uint128 add128( struct uint128 a, struct uint128 b )
|
|
{
|
|
struct uint128 z;
|
|
|
|
z.v0 = a.v0 + b.v0;
|
|
z.v64 = a.v64 + b.v64 + (z.v0 < a.v0);
|
|
return z;
|
|
|
|
}
|
|
|