Move everything into a new repo.

1 files changed, 28 insertions, 0 deletions

diff --git a/userland/libc/string/strncmp.c b/userland/libc/string/strncmp.c
new file mode 100644
index 0000000..fd46189
--- /dev/null
+++ b/userland/libc/string/strncmp.c
@@ -0,0 +1,28 @@
+#include <string.h>
+
+int strncmp(const char *s1, const char *s2, size_t n) {
+  // The strcmp() function shall compare the string pointed to by s1
+  // to the string pointed to by s2.
+  int l1, l2, rc;
+  l1 = l2 = rc = 0;
+  for (; (*s1 || *s2) && n > 0; n--) {
+    if (*s1 != *s2)
+      rc++;
+    if (*s1) {
+      l1++;
+      s1++;
+    }
+    if (*s2) {
+      l2++;
+      s2++;
+    }
+  }
+
+  // Upon completion, strcmp() shall return an integer greater than,
+  // equal to, or less than 0, if the string pointed to by s1 is
+  // greater than, equal to, or less than the string pointed to by
+  // s2, respectively.
+  if (l2 > l1)
+    return -rc;
+  return rc;
+}