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https://github.com/NVIDIA/cuda-samples.git
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128 lines
5.1 KiB
C++
128 lines
5.1 KiB
C++
/* Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of NVIDIA CORPORATION nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Header for utility functionality.
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* Host code.
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*/
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#ifndef _MATLAB_H_
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#define _MATLAB_H_
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// includes, system
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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// includes, project
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////////////////////////////////////////////////////////////////////////////////
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//! Write a tridiagonal, symmetric matrix in vector representation and
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//! it's eigenvalues
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//! @param filename name of output file
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//! @param d diagonal entries of the matrix
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//! @param s superdiagonal entries of the matrix (len = n - 1)
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//! @param eigenvals eigenvalues of the matrix
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//! @param indices vector of len n containing the position of the eigenvalues
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//! if these are sorted in ascending order
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//! @param n size of the matrix
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////////////////////////////////////////////////////////////////////////////////
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extern "C" void writeTridiagSymMatlab(const char *filename, float *d, float *s,
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float *eigenvals, const unsigned int n);
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////////////////////////////////////////////////////////////////////////////////
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//! Write matrix to a file in Matlab format
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//! @param file file handle to which to write he matrix
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//! @param mat_name name of matrix in Matlab
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//! @param mat matrix to write to the file
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//! @param mat_size size of the (square) matrix \a mat
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////////////////////////////////////////////////////////////////////////////////
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template <class T, class S>
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void writeMatrixMatlab(T &file, const char *mat_name, S *&mat,
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const unsigned int mat_size);
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////////////////////////////////////////////////////////////////////////////////
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//! Write vector to a file in Matlab format
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//! @param file file handle to which to write he matrix
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//! @param vec_name name of vector in Matlab
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//! @param vec matrix to write to the file
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//! @param vec_len length of the vector
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////////////////////////////////////////////////////////////////////////////////
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template <class T, class S>
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void writeVectorMatlab(T &file, const char *vec_name, S *&vec,
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const unsigned int vec_len);
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// implementations
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////////////////////////////////////////////////////////////////////////////////
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//! Write matrix to a file in Matlab format
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//! @param file file handle to which to write he matrix
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//! @param mat_name name of matrix in Matlab
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//! @param mat matrix to write to the file
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//! @param mat_size size of the (square) matrix \a mat
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////////////////////////////////////////////////////////////////////////////////
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template <class T, class S>
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void writeMatrixMatlab(T &file, const char *mat_name, S *&mat,
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const unsigned int mat_size) {
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const unsigned int pitch = sizeof(S) * mat_size;
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file << mat_name << " = [";
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for (unsigned int i = 0; i < mat_size; ++i) {
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for (unsigned int j = 0; j < mat_size; ++j) {
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file << getMatrix(mat, pitch, i, j) << " ";
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}
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if (i != mat_size - 1) {
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file << "; ";
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}
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}
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file << "];\n";
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}
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////////////////////////////////////////////////////////////////////////////////
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//! Write vector to a file in Matlab format
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//! @param file file handle to which to write he matrix
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//! @param vec_name name of vector in Matlab
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//! @param vec matrix to write to the file
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//! @param vec_len length of the vector
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////////////////////////////////////////////////////////////////////////////////
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template <class T, class S>
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void writeVectorMatlab(T &file, const char *vec_name, S *&vec,
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const unsigned int vec_len) {
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file << vec_name << " = [";
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for (unsigned int i = 0; i < vec_len; ++i) {
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file << vec[i] << " ";
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}
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file << "];\n";
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}
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#endif // _MATLAB_H_
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