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/* ************************************************************************
* Copyright 2013 Advanced Micro Devices, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ************************************************************************/
static const char *asum_kernel = "
#ifdef DOUBLE_PRECISION
#ifdef cl_khr_fp64
#pragma OPENCL EXTENSION cl_khr_fp64 : enable
#else
#pragma OPENCL EXTENSION cl_amd_fp64 : enable
#endif
#endif
__kernel void %PREFIXasum_kernel( __global %TYPE *_X, __global %PTYPE *scratchBuff, uint N, uint offx, int incx)
{
__global %TYPE *X = _X + offx;
%TYPE asum = (%TYPE) 0.0;
#ifdef INCX_NEGATIVE
if( get_global_id(0) == 0 ) {
scratchBuff[0] = (%PTYPE)0.0;
}
return;
#endif
int gOffset;
for( gOffset=(get_global_id(0) * %V); (gOffset + %V - 1)<N; gOffset+=( get_global_size(0) * %V ) )
{
%TYPE%V vReg1;
#ifdef INCX_NONUNITY
%VLOADWITHINCX( vReg1, (X + (gOffset*incx)), incx);
#else
vReg1 = %VLOAD( 0, (X + gOffset) );
#endif
vReg1 = fabs( vReg1 );
asum += %REDUCE_SUM( vReg1 ); // Add-up elements in the vector to give a scalar
}
for( ; gOffset<N; gOffset++ )
{
%TYPE sReg1 = X[gOffset * incx];
sReg1 = fabs( sReg1 );
//%TYPE res;
%ADD( asum, asum, sReg1 );
}
%REDUCTION_BY_SUM(asum);
%PTYPE answer;
#ifdef COMPLEX
answer = asum.even + asum.odd;
#else
answer = asum;
#endif
if( (get_local_id(0)) == 0 ) {
scratchBuff[ get_group_id(0) ] = answer;
}
}
\n";
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