[mareframe] Annotation of /trunk/gadget/matrix.cc
Annotation of /trunk/gadget/matrix.cc
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ulcessvp |
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#include "matrix.h" |
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#include "mathfunc.h" |
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#include "gadget.h" |
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Matrix::Matrix(int nr, int nc, double value) {
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m = new double[nr * nc];
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nrow = nr;
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ncol = nc;
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int i, j;
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for (i = 0; i < nr; i++) {
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for (j = 0; j < nc; j++)
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m[i*ncol+j] = value;
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}
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}
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Matrix::~Matrix() {
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int i;
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if (m != 0) {
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delete[] m;
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m = 0;
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ncol = nrow = 0;
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}
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}
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void Matrix::AddRows(int add, int length, double value) {
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if (add <= 0)
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return;
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int i, j;
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if (m == 0) {
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nrow = add;
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ncol = length;
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m = new double[nrow*ncol];
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for (i = 0; i < nrow; i++) {
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for (j = 0; j < length; j++)
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m[i*ncol+j] = value;
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}
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} else {
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int aux = nrow + add;
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double* vnew = new double[aux*length];
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for (i = 0; i < nrow; i++)
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for (j = 0; j < length; j++)
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vnew[i*ncol+j] = m[i*ncol+j];
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for (i = nrow; i < nrow + add; i++) {
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for (j = 0; j < length; j++)
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vnew[i*ncol+j] = value;
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}
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delete[] m;
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m = vnew;
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nrow = aux;
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}
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}
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void Matrix::Reset() {
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if (nrow > 0) {
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int i;
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delete[] m;
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m = 0;
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nrow = 0;
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ncol = 0;
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}
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}
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ulcessvp |
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void Matrix::Initialize(int nr, int nc, double initial) {
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if (m != 0)
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delete[] m;
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m = new double[nr * nc];
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nrow = nr;
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ncol = nc;
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int i, j;
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for (i = 0; i < nr; i++) {
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for (j = 0; j < nc; j++)
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m[i*ncol+j] = initial;
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}
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}
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ulcessvp |
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void Matrix::Print(ofstream& outfile) const {
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int i, j;
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for (i = 0; i < nrow; i++) {
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outfile << TAB;
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for (j = 0; j < ncol; j++)
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outfile << setw(smallwidth) << setprecision(smallprecision)
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<< m[i*ncol+j] << sep;
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outfile << endl;
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}
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}
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void Matrix::setToZero() {
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int i, j;
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for (i = 0; i < nrow; i++)
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for (j = 0; j < ncol; j++)
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ulcessvp |
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m[i*ncol+j] = 0.0;
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ulcessvp |
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}
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