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-rw-r--r--src/u16_wcsnlen.c19
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diff --git a/src/u16_wcsnlen.c b/src/u16_wcsnlen.c
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+/*******************************************************************/
+/* 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_wcsnlen(const uint16_t * src, size_t len)
+{
+ const uint16_t * wch = src;
+ const uint16_t * cap = &src[len];
+
+ for (; (wch < cap) && *wch; )
+ wch++;
+
+ return wch - src;
+}