1 files changed, 4 insertions, 0 deletions
diff --git a/string32.c b/string32.c
index 03f96c4..387d15c 100644
--- a/string32.c
+++ b/string32.c
@@ -123,6 +123,10 @@ bool is32_alnum(char32_t c) {
 	return c <= WINT_MAX && iswalnum((wint_t)c);
 }
 
+bool is32_digit(char32_t c) {
+	return c <= WINT_MAX && iswdigit((wint_t)c);
+}
+
 // could this character appear in a C-style identifier?
 bool is32_ident(char32_t c) {
 	return c <= WINT_MAX && (iswalnum((wint_t)c) || c == '_');