Create ReverseArray.cu

ReverseArray.cu

@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <assert.h>
+
+#include "Utilities.cuh"
+
+/********/
+/* MAIN */
+/********/
+int main() 
+{
+    // --- Number of elements
+	const int N = 6;								
+
+	// --- Input host array
+    float *h_in = (float *)malloc(N * sizeof(float));
+    for (int i = 0; i < N; i++) h_in[i] = i;
+
+	// --- Output host array
+    float *h_out = (float *)malloc(N * sizeof(float));
+
+	// --- Input device array
+	float *d_in;	gpuErrchk(cudaMalloc(&d_in, N * sizeof(float)));
+	gpuErrchk(cudaMemcpy(d_in, h_in, N * sizeof(float), cudaMemcpyHostToDevice));
+
+	// --- Output device array
+	float *d_out;	gpuErrchk(cudaMalloc(&d_out, N * sizeof(float)));
+
+    reverseArray(d_in, d_out, N);
+
+    gpuErrchk(cudaMemcpy(h_out, d_out, N * sizeof(float), cudaMemcpyDeviceToHost));
+
+    // --- Result check
+    for (int i = 0; i < N; i++) assert(h_out[i] == N - 1 - i );
+    for (int i = 0; i < N; i++) printf("%i %f\n", i, h_out[i]);
+
+    // --- Free device memory
+    gpuErrchk(cudaFree(d_in));
+    gpuErrchk(cudaFree(d_out));
+
+    // --- Free host memory
+    free(h_in);
+
+    printf("Test passed!\n");
+
+    return 0;
+}
+