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// =================================================================================================
// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
// width of 100 characters per line.
//
// Author(s):
// Cedric Nugteren <www.cedricnugteren.nl>
//
// This file contains the general banded (gb) to general (ge) matrix transforms.
//
// This kernel uses the matrix-transforms common tuning parameters.
//
// =================================================================================================
// Enables loading of this file using the C++ pre-processor's #include (C++11 standard raw string
// literal). Comment-out this line for syntax-highlighting when developing.
R"(
// =================================================================================================
#if defined(ROUTINE_GBMV)
// Kernel to transform a general banded matrix into a general matrix
__attribute__((reqd_work_group_size(PAD_DIMX, PAD_DIMY, 1)))
__kernel void GeneralBandedToGeneral(const int src_one, const int src_two,
const int src_ld, const int src_offset,
__global const real* restrict src,
const int dest_one, const int dest_two,
const int dest_ld, const int dest_offset,
__global real* dest,
const int layout,
const int kl, const int ku) {
// Loops over the work per thread in both dimensions
#pragma unroll
for (int w_one=0; w_one<PAD_WPTX; ++w_one) {
const int id_one = (get_group_id(0)*PAD_WPTX + w_one) * PAD_DIMX + get_local_id(0);
#pragma unroll
for (int w_two=0; w_two<PAD_WPTY; ++w_two) {
const int id_two = (get_group_id(1)*PAD_WPTY + w_two) * PAD_DIMY + get_local_id(1);
if (id_two < dest_two && id_one < dest_one) {
real result;
SetToZero(result);
const int k = ku - id_two + id_one;
if ((id_one >= id_two - ku) && (id_one < id_two + kl + 1)) {
result = src[id_two*src_ld + k + src_offset];
}
dest[id_two*dest_ld + id_one + dest_offset] = result;
}
}
}
}
#endif
// =================================================================================================
// End of the C++11 raw string literal
)"
// =================================================================================================
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