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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* Header for utility functionality.
* Host code.
*/
#ifndef _MATLAB_H_
#define _MATLAB_H_
// includes, system
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
// includes, project
////////////////////////////////////////////////////////////////////////////////
//! Write a tridiagonal, symmetric matrix in vector representation and
//! it's eigenvalues
//! @param filename name of output file
//! @param d diagonal entries of the matrix
//! @param s superdiagonal entries of the matrix (len = n - 1)
//! @param eigenvals eigenvalues of the matrix
//! @param indices vector of len n containing the position of the eigenvalues
//! if these are sorted in ascending order
//! @param n size of the matrix
////////////////////////////////////////////////////////////////////////////////
extern "C" void writeTridiagSymMatlab(const char *filename, float *d, float *s,
float *eigenvals, const unsigned int n);
////////////////////////////////////////////////////////////////////////////////
//! Write matrix to a file in Matlab format
//! @param file file handle to which to write he matrix
//! @param mat_name name of matrix in Matlab
//! @param mat matrix to write to the file
//! @param mat_size size of the (square) matrix \a mat
////////////////////////////////////////////////////////////////////////////////
template <class T, class S>
void writeMatrixMatlab(T &file, const char *mat_name, S *&mat,
const unsigned int mat_size);
////////////////////////////////////////////////////////////////////////////////
//! Write vector to a file in Matlab format
//! @param file file handle to which to write he matrix
//! @param vec_name name of vector in Matlab
//! @param vec matrix to write to the file
//! @param vec_len length of the vector
////////////////////////////////////////////////////////////////////////////////
template <class T, class S>
void writeVectorMatlab(T &file, const char *vec_name, S *&vec,
const unsigned int vec_len);
// implementations
////////////////////////////////////////////////////////////////////////////////
//! Write matrix to a file in Matlab format
//! @param file file handle to which to write he matrix
//! @param mat_name name of matrix in Matlab
//! @param mat matrix to write to the file
//! @param mat_size size of the (square) matrix \a mat
////////////////////////////////////////////////////////////////////////////////
template <class T, class S>
void writeMatrixMatlab(T &file, const char *mat_name, S *&mat,
const unsigned int mat_size) {
const unsigned int pitch = sizeof(S) * mat_size;
file << mat_name << " = [";
for (unsigned int i = 0; i < mat_size; ++i) {
for (unsigned int j = 0; j < mat_size; ++j) {
file << getMatrix(mat, pitch, i, j) << " ";
}
if (i != mat_size - 1) {
file << "; ";
}
}
file << "];\n";
}
////////////////////////////////////////////////////////////////////////////////
//! Write vector to a file in Matlab format
//! @param file file handle to which to write he matrix
//! @param vec_name name of vector in Matlab
//! @param vec matrix to write to the file
//! @param vec_len length of the vector
////////////////////////////////////////////////////////////////////////////////
template <class T, class S>
void writeVectorMatlab(T &file, const char *vec_name, S *&vec,
const unsigned int vec_len) {
file << vec_name << " = [";
for (unsigned int i = 0; i < vec_len; ++i) {
file << vec[i] << " ";
}
file << "];\n";
}
#endif // _MATLAB_H_
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