1 files changed, 22 insertions, 0 deletions
diff --git a/src/u16_wcsspn.c b/src/u16_wcsspn.c
new file mode 100644
index 0000000..7ba690e
--- /dev/null
+++ b/src/u16_wcsspn.c
@@ -0,0 +1,22 @@
+/*******************************************************************/
+/*  u16ports: u16 variants of wide character string functions.     */
+/*  Copyright (C) 2017  Z. Gilboa                                  */
+/*  Released under the Standard MIT License; see COPYING.U16PORTS. */
+/*******************************************************************/
+
+#include <stdint.h>
+#include <u16ports/u16ports.h>
+
+size_t u16_wcsspn(const uint16_t * wstr, const uint16_t * cstr)
+{
+	const uint16_t * wch;
+	const uint16_t * wcs;
+
+        for (wcs=wstr; *wcs; wcs++)
+		for (wch=cstr; *wch!=*wcs; wch++)
+			if (!*wch)
+				return wcs - wstr;
+
+
+        return wcs - wstr;
+}