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Matrix fertig

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Giorgi Kesidis 2025-11-10 19:54:47 +01:00
parent 8722f104a6
commit f0cd9abe2b
1 changed files with 74 additions and 9 deletions
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69
matrix.c
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@ -1,6 +1,7 @@
#include <stdlib.h>
#include <string.h>
#include "matrix.h"
#include <stdio.h>
// TODO Matrix-Funktionen implementieren
@ -12,7 +13,8 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
matrix.data = (MatrixType *)malloc(rows * cols * sizeof(MatrixType));
if(matrix.data == NULL){
if (matrix.data == NULL)
{
matrix.rows = 0;
matrix.cols = 0;
@ -39,7 +41,6 @@ void clearMatrix(Matrix *matrix)
matrix->rows = 0;
matrix->cols = 0;
}
void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
@ -47,6 +48,7 @@ void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned
if (rowIdx >= matrix.rows || colIdx >= matrix.cols)
{
fprintf(stderr, "Fehler: Ungültiger Index (%u, %u) bei Matrixgröße %u x %u\n", rowIdx, colIdx, matrix.rows, matrix.cols);
return; // abbruch falls fehler
}
matrix.data[rowIdx * matrix.cols + colIdx] = value;
@ -54,12 +56,75 @@ void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned
MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
{
if (rowIdx >= matrix.rows || colIdx >= matrix.cols)
{
fprintf(stderr, "Fehler: Ungültiger Index (%u, %u) bei Matrixgröße %u x %u\n", rowIdx, colIdx, matrix.rows, matrix.cols);
return UNDEFINED_MATRIX_VALUE;
}
return matrix.data[rowIdx * matrix.cols + colIdx];
}
Matrix add(const Matrix matrix1, const Matrix matrix2)
{
if (matrix1.rows != matrix2.rows || matrix1.cols != matrix2.cols)
{
fprintf(stderr, "Fehler: Matrizen haben unterschiedliche Größen (%u x %u) und (%u x %u)\n",
matrix1.rows, matrix1.cols, matrix2.rows, matrix2.cols);
Matrix empty = {0, 0, NULL};
return empty;
}
Matrix result = createMatrix(matrix1.rows, matrix1.cols);
if (result.data == NULL)
{
fprintf(stderr, "Fehler: Speicher konnte nicht reserviert werden!\n");
return result;
}
for (int i = 0; i < matrix1.rows; i++)
{
for (int j = 0; j < matrix1.cols; j++)
{
result.data[i * result.cols + j] = matrix1.data[i * matrix1.cols + j] + matrix2.data[i * matrix2.cols + j];
}
}
return result;
}
Matrix multiply(const Matrix matrix1, const Matrix matrix2)
{
if (matrix1.cols != matrix2.rows)
{
fprintf(stderr, "Fehler: Matrizen der Dimension (%u x %u) und (%u x %u) koennen nicht multipliziert werden\n",
matrix1.rows, matrix1.cols, matrix2.rows, matrix2.cols);
Matrix empty = {0, 0, NULL};
return empty;
}
Matrix result = createMatrix(matrix1.rows, matrix2.cols);
if (result.data == NULL)
{
fprintf(stderr, "Fehler: Speicher konnte nicht reserviert werden!\n");
return result;
}
for (int i = 0; i < matrix1.rows; i++)
{
for (int j = 0; j < matrix2.cols; j++)
{
MatrixType sum = 0.0;
for (int k = 0; k < matrix1.cols; k++)
{
sum += matrix1.data[i * matrix1.cols + k] * matrix2.data[k * matrix2.cols + j];
}
result.data[i * result.cols +j] = sum;
}
}
return result;
}