rewrite everything

Source/sys-clk/overlay/src/ui/format.h

@@ -0,0 +1,28 @@
+/*
+ * --------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <p-sam@d3vs.net>, <natinusala@gmail.com>, <m4x@m4xw.net>
+ * wrote this file. As long as you retain this notice you can do whatever you
+ * want with this stuff. If you meet any of us some day, and you think this
+ * stuff is worth it, you can buy us a beer in return.  - The sys-clk authors
+ * --------------------------------------------------------------------------
+ */
+
+#pragma once
+
+#include <cstdio>
+
+#define FREQ_DEFAULT_TEXT "Do not override"
+
+static inline std::string formatListFreqMHz(std::uint32_t mhz)
+{
+    if(mhz == 0)
+    {
+        return FREQ_DEFAULT_TEXT;
+    }
+
+    char buf[10];
+    return std::string(buf, snprintf(buf, sizeof(buf), "%u MHz", mhz));
+}
+
+static inline std::string formatListFreqHz(std::uint32_t hz) { return formatListFreqMHz(hz / 1000000); }