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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 *scal_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 %PREFIXscal_kernel( %TYPE alpha, __global %TYPE *_X, uint N, uint offx, int incx )
{
if(incx < 0) {
return;
}
__global %TYPE *X = _X + offx;
uint global_offset = get_global_id(0) * %V;
bool isVectorWI = ((global_offset + (%V-1)) < N) && (incx == 1);
int gOffset;
for( gOffset=(get_global_id(0) * %V); (gOffset + %V - 1)<N; gOffset+=( get_global_size(0) * %V ) )
{
%TYPE%V vReg1, temp;
#ifdef INCX_NONUNITY
%VLOADWITHINCX( vReg1, (X + (gOffset*incx)), incx);
#else
vReg1 = %VLOAD( 0, (X + gOffset) );
#endif
%VMUL( temp, vReg1, alpha );
#ifdef INCX_NONUNITY
%VSTOREWITHINCX( (X + (gOffset * incx)), temp, incx );
#else
%VSTORE( temp, 0 ,(X + (gOffset * incx)) );
#endif
}
// Loop for the last thread to handle the tail part of the vector
// Using the same gOffset used above
for( ; gOffset<N; gOffset++ )
{
%TYPE sReg1, temp;
sReg1 = X[gOffset * incx];
%MUL( temp, sReg1, alpha );
X[gOffset * incx] = temp;
}
}
\n";
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