#include <stdlib.h>
#include <string.h>
#include "matrix.h"

// TODO Matrix-Funktionen implementieren

/*
Alte Funktion
Matrix createMatrix(unsigned int rows, unsigned int cols)
{
    Matrix m;
    m.rows = rows;
    m.cols = cols;
    m.data = NULL;

    if(rows == 0 || cols == 0){
        m.rows = m.cols = 0;
        return m;
    }

    m.data = malloc(rows * sizeof *m.data);
    
    if(!m.data){
        m.rows = m.cols = 0;
        return m;
    }
    for(unsigned int i = 0; i < rows; i++){
        m.data[i] = malloc(cols * sizeof *m.data[i]);
      
      if(!m.data[i]){
        for(unsigned int j = 0; j < i; j++){
            free(m.data[j]);
        }
        free(m.data);
        m.data = NULL;
        m.rows = m.cols = 0;
        return m;
      }
        
    }
    return m;
}
*/

Matrix createMatrix(size_t cols, size_t rows)
{
    Matrix m;
    m.rows = rows;
    m.cols = cols;
    m.buffer = NULL;

    if(rows == 0 || cols == 0){
        m.rows = m.cols = 0;
        return m;
    }

    // Single allocation for entire matrix
    m.buffer = malloc(rows * cols * sizeof(MatrixType));
    
    if(!m.buffer){
        m.rows = m.cols = 0;
        return m;
    }
    
    // Initialize (optional)
    for(unsigned int i = 0; i < rows * cols; i++){
        m.buffer[i] = UNDEFINED_MATRIX_VALUE;
    }
    
    return m;
}


void clearMatrix(Matrix *matrix)
{
    
}

void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
{
    
}

MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
{
    
}

Matrix add(const Matrix matrix1, const Matrix matrix2)
{
    
}

Matrix multiply(const Matrix matrix1, const Matrix matrix2)
{
    
}