fix errors with dimensions

Author: TannerLow

src/main/java/com/github/TannerLow/JavaMatrixMath/Matrix.java

@@ -55,7 +55,7 @@ public Matrix multiply(Matrix other) throws DimensionsMismatchException {
                 for(int col = 0; col < this.cols; col++) {
                     sum += data[row * this.cols + col] * other.data[col * other.cols + otherCol];
                 }
-                result.data[row * result.rows + otherCol] = sum;
+                result.data[row * result.cols + otherCol] = sum;
             }
         }
 
@@ -266,7 +266,7 @@ public Matrix multiply(GPU gpu, Matrix other) {
 
         // Set the work-item dimensions
         long local_work_sizes[] = new long[]{1, 1};
-        long global_work_sizes[] = new long[]{rows, cols};
+        long global_work_sizes[] = new long[]{rows, other.cols};
 
         // Execute the kernel
         clEnqueueNDRangeKernel(commandQueue, kernel, 2, null,

src/test/java/com/github/TannerLow/JavaMatrixMath/GpuTest.java

@@ -62,6 +62,7 @@ private static void testMultiply() {
 
         for(int i = 0; i < result.data.length; i++) {
             if(!TestMath.withinMariginOfError(expected[i], result.data[i], 0.0005f)) {
+                System.out.println(expected[i] + " vs " + result.data[i]);
                 throw new TestFailedException();
             }
         }