1 files changed, 19 insertions, 0 deletions
diff --git a/src/libstddjb/str_diffn.c b/src/libstddjb/str_diffn.c
new file mode 100644
index 0000000..28f37f6
--- /dev/null
+++ b/src/libstddjb/str_diffn.c
@@ -0,0 +1,19 @@
+/* ISC license. */
+
+#include <skalibs/config.h>
+#include <skalibs/bytestr.h>
+
+#ifdef SKALIBS_FLAG_REPLACE_LIBC
+
+int str_diffn (register char const *s, register char const *t, register unsigned int len)
+{
+  while (len--)
+  {
+    if (*s != *t) return *s - *t ;
+    if (!*s) break ;
+    s++ ; t++ ;
+  }
+  return 0 ;
+}
+
+#endif