--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crc32qw.c	Mon Feb 09 01:15:00 2026 -0500
@@ -0,0 +1,36 @@
+#include "crc32i.h"
+
+uint32_t crc32qw_r(uint32_t crc, const unsigned char *message, size_t sz)
+{
+	while (sz >= 4) {
+		union {
+			unsigned char b[4];
+			uint32_t w;
+		} w;
+
+#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)
+		/* Tell GCC that we will be aliasing */
+		w.w = *(__attribute__((__may_alias__)) uint32_t *)message;
+#else
+		/* ... */
+		w.b[0] = message[0];
+		w.b[1] = message[1];
+		w.b[2] = message[2];
+		w.b[3] = message[3];
+#endif
+
+		crc ^= w.w;
+
+		crc = (crc >> 8) ^ crc32_tab[crc & 0xFF];
+		crc = (crc >> 8) ^ crc32_tab[crc & 0xFF];
+		crc = (crc >> 8) ^ crc32_tab[crc & 0xFF];
+		crc = (crc >> 8) ^ crc32_tab[crc & 0xFF];
+
+		message += 4;
+		sz -= 4;
+	}
+
+	if (!sz) return crc;
+
+	return crc32c_r(crc, message, sz);
+}