1 files changed, 12 insertions, 0 deletions
diff --git a/pk/string.c b/pk/string.c
index b1b9abc..e896379 100644
--- a/pk/string.c
+++ b/pk/string.c
@@ -45,6 +45,18 @@ size_t strlen(const char *s)
   return p - s;
 }
 
+int strcmp(const char* s1, const char* s2)
+{
+  unsigned char c1, c2;
+
+  do {
+    c1 = *s1++;
+    c2 = *s2++;
+  } while (c1 != 0 && c1 == c2);
+
+  return c1 - c2;
+}
+
 char* strcpy(char* dest, const char* src)
 {
   char* d = dest;