Index Matrix Tiles

#include <stdio.h>
#include <assert.h>
int GetTileElement(int rowCount, int columnCount, int tileRow, int tileColumn, int rowInTile, int columnInTile, int partitionRow, int partitionColumn, int arrayLength, int *array)
{
 int totalTilesAlongRow = rowCount / partitionRow;
 int totalTilesAlongColumn = columnCount / columnCount;
 assert(rowCount % partitionRow == 0);
 assert(columnCount % columnCount == 0);
 assert(rowInTile > -1);assert(columnInTile > -1);
 assert(rowCount > -1);assert(columnCount > -1);
 assert(tileRow > -1);assert(tileColumn > -1);

 assert(rowInTile < partitionRow);assert(columnInTile < partitionColumn);
 assert(tileRow < totalTilesAlongRow);assert(tileColumn < totalTilesAlongColumn);

 // Calculate the starting row and column of the tile
 int startRow = tileRow * partitionRow;
 int startCol = tileColumn * partitionColumn;

 // Calculate the absolute row and column in the matrix
 int globalRow = startRow + rowInTile;
 int globalCol = startCol + columnInTile;

 // Return the value from the matrix
 int index = globalRow * columnCount + globalCol;
 assert(index < arrayLength);
 assert(index > -1);
 return array[index];
}

int main()
{
 int rowCount = 6;
 int columnCount = 9; 
 int partitionRow = 3;
 int partitionColumn = 3;


 int array[] = 
 {
  1,   2,  3,  4,  5,  6,  7,  8,  9,
  10, 11, 12, 13, 14, 15, 16, 17, 18,
  19, 20, 21, 22, 23, 24, 25, 26, 27,
  28, 29, 30, 31, 32, 33, 34, 35, 36,
  37, 38, 39, 40, 41, 42, 43, 44, 45,
  46, 47, 48, 49, 50, 51, 52, 53, 54
 };
 int arrayLength = sizeof(array) / sizeof(int);

 int tileRow = 1;  
 int tileColumn = 1;  
 int rowInTile = 3;  
 int columnInTile = 2; 

 int element = GetTileElement(rowCount, columnCount, tileRow, tileColumn, rowInTile, columnInTile, partitionRow, partitionColumn, arrayLength, array);
 printf("Element at tile (%d,%d) and position (%d,%d): %d\n",tileRow,tileColumn,rowInTile,columnInTile,  element);

    return 0;
}