Refactor human-friendly unit algorithms

1 files changed, 23 insertions, 0 deletions

diff --git a/unit_label.c b/unit_label.c
new file mode 100644
index 0000000..22043ee
--- /dev/null
+++ b/unit_label.c
@@ -0,0 +1,23 @@
+#include <unistd.h>
+
+struct unit_label {
+	/* number of times this unit fits into the immediate larger one */
+	double count;
+
+	/* label for the unit*/
+	char *label;
+};
+
+double make_unit_whatsit(const struct unit_label l[], char **unit, double value) {
+	size_t i = 0;
+
+	for (i = 0; l[i+1].label; i++) {
+		if (l[i].count > value) {
+			break;
+		}
+		value /= l[i].count;
+	}
+
+	*unit = l[i].label;
+	return value;
+}