1 files changed, 19 insertions, 0 deletions
diff --git a/usr/string.c b/usr/string.c
new file mode 100644
index 0000000..8c94900
--- /dev/null
+++ b/usr/string.c
@@ -0,0 +1,19 @@
+char* ulong_to_string(unsigned long value, char* data)
+{
+	unsigned long t = value;
+	unsigned long c;
+	char* dptr = data + 10;
+	for (int i = 0; i <= 10; i++) {
+		c = t%10;
+		*dptr = 0x30 + (c&0xF);
+		t /= 10;
+		if (t==0)
+			break;
+		dptr -= 1;
+		if (i == 5) {
+			*dptr = '.';
+			dptr -= 1;
+		}
+	}
+	return dptr;
+}