fl8test.c for quessing when groups change for thier

fl8test.c

@@ -0,0 +1,38 @@
+// gcc fl8test.c -O2 -o fl8test
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+union fu {
+	float f;
+	uint32_t u;
+};
+
+uint32_t until = 2048;
+uint32_t shift = 24;
+uint32_t groupcnt = 0;
+int main (int argc, char **argv) {
+	if(argc > 1) {
+		const char* arg = argv[1];
+		until = atoi(arg);
+	}
+	if(argc > 2) {
+		const char* arg = argv[2];
+		shift = atoi(arg);
+	}
+
+	uint32_t prev = (uint32_t) -1;
+	for(uint32_t i = 0; i < until; ++i) {
+		union fu fui;
+		fui.f = (float) i;
+		fui.u = (fui.u >> shift);
+
+		if(fui.u != prev) {
+			printf("%d -> %d\n", i, fui.u);
+			++groupcnt;
+		}
+		prev = fui.u;
+	}
+
+	printf("Until %d, there are %d groups!\n", until, groupcnt);
+}