1 files changed, 15 insertions, 0 deletions

diff --git a/str_start.c b/str_start.c
new file mode 100644
index 0000000..017efc7
--- /dev/null
+++ b/str_start.c
@@ -0,0 +1,15 @@
+/* Public domain. */
+
+#include "str.h"
+
+int str_start(register const char *s,register const char *t)
+{
+  register char x;
+
+  for (;;) {
+    x = *t++; if (!x) return 1; if (x != *s++) return 0;
+    x = *t++; if (!x) return 1; if (x != *s++) return 0;
+    x = *t++; if (!x) return 1; if (x != *s++) return 0;
+    x = *t++; if (!x) return 1; if (x != *s++) return 0;
+  }
+}