1 files changed, 17 insertions, 0 deletions
diff --git a/libpatch_get_zu__.c b/libpatch_get_zu__.c
new file mode 100644
index 0000000..050f3d2
--- /dev/null
+++ b/libpatch_get_zu__.c
@@ -0,0 +1,17 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+size_t
+libpatch_get_zu__(const char *text, size_t len, size_t *out)
+{
+	size_t i = 0, digit;
+	*out = 0;
+	for (; i < len; i++) {
+		digit = (size_t)(text[i] - '0');
+		if (digit > 9U)
+			break;
+		*out = *out * 10U + digit;
+	}
+	return i;
+}