60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
#include <stdlib.h>
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#include <string.h>
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#include "matrix.h"
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// TODO Matrix-Funktionen implementieren
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Matrix createMatrix(unsigned int rows, unsigned int cols)
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{
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if (rows ==0 || cols ==0){ // check if dimensions are valid
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Matrix empty = {.rows =0, .cols=0, .buffer =NULL}; //return empty matrix if invalid
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return empty;
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}
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MatrixType *buffer = malloc(rows * cols* sizeof(MatrixType)); //allocate memory
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if (buffer == NULL){ //check if memory allocation succeeded
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Matrix empty = {.rows =0, .cols=0, .buffer =NULL}; //return empty matrix if out of memory
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return empty;
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}
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Matrix result ={.rows = rows, .cols = cols, .buffer = buffer}; // create and return matrix
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return result;
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}
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void clearMatrix(Matrix *matrix)
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{ free(matrix-> buffer); // free the buffer memory
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matrix -> buffer = NULL; // set all members to NUll
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matrix -> rows =0;
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matrix -> cols =0;
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}
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void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
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{ if (rowIdx >= matrix.rows || colIdx >= matrix.cols){ // check if indices are valid
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return; // do nothing if out of bounds
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}
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unsigned int index = rowIdx * matrix.cols + colIdx; // calculate index using row-major formula
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matrix.buffer[index] = value ; // set value at that index
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}
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MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
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{ if (rowIdx >= matrix.rows || colIdx >= matrix.cols){ //check if indices are valid
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return UNDEFINED_MATRIX_VALUE;
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}
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unsigned int index = rowIdx * matrix.cols + colIdx; //calculate index using row-major formula
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return matrix.buffer [index]; // return the value at that index
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}
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Matrix add(const Matrix matrix1, const Matrix matrix2)
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{
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}
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Matrix multiply(const Matrix matrix1, const Matrix matrix2)
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{
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} |