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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 implements the Xsbmv class (see the header for information about the class).
//
// =================================================================================================
#include "routines/level2/xsbmv.hpp"
#include <string>
#include <vector>
namespace clblast {
// =================================================================================================
// Constructor: forwards to base class constructor
template <typename T>
Xsbmv<T>::Xsbmv(Queue &queue, EventPointer event, const std::string &name):
Xgemv<T>(queue, event, name) {
}
// =================================================================================================
// The main routine
template <typename T>
void Xsbmv<T>::DoSbmv(const Layout layout, const Triangle triangle,
const size_t n, const size_t k,
const T alpha,
const Buffer<T> &a_buffer, const size_t a_offset, const size_t a_ld,
const Buffer<T> &x_buffer, const size_t x_offset, const size_t x_inc,
const T beta,
const Buffer<T> &y_buffer, const size_t y_offset, const size_t y_inc) {
// The data is either in the upper or lower triangle
size_t is_upper = ((triangle == Triangle::kUpper && layout != Layout::kRowMajor) ||
(triangle == Triangle::kLower && layout == Layout::kRowMajor));
// Runs the generic matrix-vector multiplication, disabling the use of fast vectorized kernels.
// The specific symmetric banded matrix-accesses are implemented in the kernel guarded by the
// ROUTINE_SBMV define.
bool fast_kernels = false;
MatVec(layout, Transpose::kNo,
n, n, alpha,
a_buffer, a_offset, a_ld,
x_buffer, x_offset, x_inc, beta,
y_buffer, y_offset, y_inc,
fast_kernels, fast_kernels,
is_upper, false, k, 0);
}
// =================================================================================================
// Compiles the templated class
template class Xsbmv<half>;
template class Xsbmv<float>;
template class Xsbmv<double>;
// =================================================================================================
} // namespace clblast
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