48 lines
2.2 KiB
C
48 lines
2.2 KiB
C
/* negatell2 - for each of 2 signed long long slots, negate the sign bit.
|
|
Copyright (C) 2006, 2007 Sony Computer Entertainment Inc.
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms,
|
|
with or without modification, are permitted provided that the
|
|
following conditions are met:
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* 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.
|
|
* Neither the name of the Sony Computer Entertainment Inc 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
|
|
*/
|
|
|
|
#ifndef ___SIMD_MATH_NEGATELL2_H___
|
|
#define ___SIMD_MATH_NEGATELL2_H___
|
|
|
|
#include <simdmath.h>
|
|
#include <spu_intrinsics.h>
|
|
|
|
static inline vector signed long long
|
|
_negatell2 (vector signed long long x)
|
|
{
|
|
vector signed int zero = (vector signed int){0,0,0,0};
|
|
vector signed int borrow;
|
|
|
|
borrow = spu_genb(zero, (vec_int4)x);
|
|
borrow = spu_shuffle(borrow, borrow, ((vec_uchar16){4,5,6,7, 0xC0,0xC0,0xC0,0xC0, 12,13,14,15, 0xC0,0xC0,0xC0,0xC0}));
|
|
return (vec_llong2)spu_subx(zero, (vec_int4)x, borrow);
|
|
}
|
|
|
|
#endif
|