simd: show aligned store in avx_broadcast.cpp

Signed-off-by: Daniel Bevenius <[email protected]>

fundamentals/simd/src/avx_broadcast.cpp

@@ -1,12 +1,28 @@
 #include <immintrin.h>
 #include <iostream>
 
+bool isAligned32(void* ptr) {
+    return (uintptr_t) ptr % 32 == 0;
+}
+
 int main() {
     double vb = 3.0;
+    printf("is vb aliged: %s\n", isAligned32(&vb) ? "true" : "false");
+
     __m256d broadcasted = _mm256_broadcast_sd(&vb);
 
     double result[4];
+    // store unaligned
     _mm256_storeu_pd(result, broadcasted);
-    printf("Result: [%f, %f, %f, %f]\n", result[0], result[1], result[2], result[3]);
+    printf("Unaligned Result: [%f, %f, %f, %f]\n", result[0], result[1], result[2], result[3]);
+
+    alignas(32) double vb2 = 3.0;
+    printf("Is vb2 aliged: %s\n", isAligned32(&vb2) ? "true" : "false");
+    __m256d broadcasted2 = _mm256_broadcast_sd(&vb2);
+    alignas(32) double result2[4];
+    // store aligned
+    _mm256_store_pd(result2, broadcasted);
+    printf("Aligned Result: [%f, %f, %f, %f]\n", result2[0], result2[1], result2[2], result2[3]);
+
     return 0;
 }