Initial commit: libft Part 1 with tests and documentation

Reimplements 24 libc functions with Doxygen-documented header
and test suite comparing against libc.

1 files changed, 19 insertions, 0 deletions

diff --git a/ft_strnstr.c b/ft_strnstr.c
new file mode 100644
index 0000000..23ac891
--- /dev/null
+++ b/ft_strnstr.c
@@ -0,0 +1,19 @@
+#include "libft.h"
+
+char *
+ft_strnstr (const char *big, const char *little, size_t len)
+{
+  size_t llen;
+
+  if (*little == '\0')
+    return ((char *)big);
+  llen = ft_strlen (little);
+  while (*big && len >= llen)
+    {
+      if (ft_memcmp (big, little, llen) == 0)
+        return ((char *)big);
+      big++;
+      len--;
+    }
+  return (NULL);
+}