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-rw-r--r--src/u16_wcscspn.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/u16_wcscspn.c b/src/u16_wcscspn.c
new file mode 100644
index 0000000..9870dc7
--- /dev/null
+++ b/src/u16_wcscspn.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_wcscspn(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;
+}