// use 64 byte prefetch for quadruple quads
while (nframes >= 16) {
+#ifdef COMPILER_MSVC
+ _mm_prefetch(((char*)buf+64), 0); // A total guess! Assumed to be eqivalent to
+#else // the line below but waiting to be tested !!
__builtin_prefetch(buf+64,0,0);
-
+#endif
work = _mm_load_ps(buf);
current_min = _mm_min_ps(current_min, work);
current_max = _mm_max_ps(current_max, work);