From 23ec64bf146db3e66542b739bf9259f13fc110f8 Mon Sep 17 00:00:00 2001
From: Richard Thier <u9vata@gmail.com>
Date: Mon, 10 Apr 2023 20:04:46 +0200
Subject: [PATCH] fl8test.c for quessing when groups change for thier

---
 fl8test.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 fl8test.c

diff --git a/fl8test.c b/fl8test.c
new file mode 100644
index 0000000..6e95ac5
--- /dev/null
+++ b/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);
+}