54 lines
2.4 KiB
C
54 lines
2.4 KiB
C
/* isnormald2 - for each element of vector x, return a mask of ones if x' is normal, not a NaN or INF, zero otherwise
|
|
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_ISNORMALD2_H___
|
|
#define ___SIMD_MATH_ISNORMALD2_H___
|
|
|
|
#include <simdmath.h>
|
|
#include <spu_intrinsics.h>
|
|
|
|
static inline vector unsigned long long
|
|
_isnormald2 (vector double x)
|
|
{
|
|
vec_uchar16 even = (vec_uchar16)(vec_uint4){ 0x00010203, 0x00010203, 0x08090a0b, 0x08090a0b };
|
|
vec_ullong2 expn = spu_splats(0x7ff0000000000000ull);
|
|
vec_ullong2 cmpr;
|
|
|
|
//Normal unless nan, infinite, denorm, or zero
|
|
|
|
//Check for 'not zero or all-ones exponent'
|
|
cmpr = (vec_ullong2)spu_and( spu_cmpgt( (vec_uint4)spu_and( (vec_ullong2)x, expn ), (vec_uint4)spu_splats(0x0000000000000000ull) ),
|
|
spu_cmpgt( (vec_uint4)expn, (vec_uint4)spu_and( (vec_ullong2)x, expn ) ) );
|
|
cmpr = spu_shuffle( cmpr, cmpr, even);
|
|
|
|
return cmpr;
|
|
}
|
|
|
|
#endif
|