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Diffstat (limited to 'src/routines/level2/xsbmv.cc')
-rw-r--r-- | src/routines/level2/xsbmv.cc | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/routines/level2/xsbmv.cc b/src/routines/level2/xsbmv.cc new file mode 100644 index 00000000..457bd762 --- /dev/null +++ b/src/routines/level2/xsbmv.cc @@ -0,0 +1,64 @@ + +// ================================================================================================= +// 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 "internal/routines/level2/xsbmv.h" + +#include <string> +#include <vector> + +namespace clblast { +// ================================================================================================= + +// Constructor: forwards to base class constructor +template <typename T> +Xsbmv<T>::Xsbmv(Queue &queue, Event &event, const std::string &name): + Xgemv<T>(queue, event, name) { +} + +// ================================================================================================= + +// The main routine +template <typename T> +StatusCode 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; + return 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<float>; +template class Xsbmv<double>; + +// ================================================================================================= +} // namespace clblast |