72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
/* $Header: /var/lib/cvs/dynare_cpp/sylv/testing/MMMatrix.cpp,v 1.1.1.1 2004/06/04 13:01:13 kamenik Exp $ */
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/* Tag $Name: $ */
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#include "MMMatrix.h"
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#include <cstdio>
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#include <cstring>
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MMMatrixIn::MMMatrixIn(const char* fname)
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{
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FILE* fd;
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if (NULL==(fd = fopen(fname,"r")))
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throw MMException(string("Cannot open file ")+fname+" for reading\n");
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char buffer[1000];
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// jump over initial comments
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while (fgets(buffer, 1000, fd) && strncmp(buffer, "%%", 2)) {}
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// read in number of rows and cols
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if (!fgets(buffer, 1000, fd))
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throw MMException(string("Cannot read rows and cols while reading ")+fname+"\n");
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if (2 != sscanf(buffer, "%d %d", &rows, &cols))
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throw MMException("Couldn't parse rows and cols\n");
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// read in data
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data = (double*) operator new[](rows*cols*sizeof(double));
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int len = rows*cols;
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int i = 0;
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while (fgets(buffer, 1000, fd) && i < len) {
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if (1 != sscanf(buffer, "%lf", &data[i]))
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throw MMException(string("Couldn't parse float number ")+buffer+"\n");
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i++;
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}
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if (i < len) {
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char mes[1000];
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sprintf(mes,"Couldn't read all %d lines, read %d so far\n",len,i);
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throw MMException(mes);
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}
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fclose(fd);
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}
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MMMatrixIn::~MMMatrixIn()
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{
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operator delete [](data);
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}
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void MMMatrixOut::write(const char* fname, int rows, int cols, const double* data)
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{
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FILE* fd;
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if (NULL==(fd = fopen(fname,"w")))
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throw MMException(string("Cannot open file ")+fname+" for writing\n");
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if (0 > fprintf(fd, "%%%%MatrixMarket matrix array real general\n"))
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throw MMException(string("Output error when writing file ")+fname);
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if (0 > fprintf(fd, "%d %d\n", rows, cols))
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throw MMException(string("Output error when writing file ")+fname);
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int running = 0;
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for (int i = 0; i < cols; i++) {
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for (int j = 0 ; j < rows; j++) {
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if (0 > fprintf(fd, "%40.35g\n", data[running]))
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throw MMException(string("Output error when writing file ")+fname);
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running++;
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}
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}
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fclose(fd);
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}
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void MMMatrixOut::write(const char* fname, const GeneralMatrix& m)
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{
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write(fname, m.numRows(), m.numCols(), m.base());
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}
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