Import of the watch repository from Pebble

platform/tintin/boot/libc/string/strlen.c

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+///////////////////////////////////////
+// Implements:
+//   size_t strlen(const char *s);
+//   size_t strnlen(const char *s, size_t maxlen);
+///////////////////////////////////////
+
+#include <stddef.h>
+
+size_t strlen(const char *s) {
+  size_t len = 0;
+  while (*s++) {
+    len++;
+  }
+  return len;
+}
+
+size_t strnlen(const char *s, size_t maxlen) {
+  size_t len = 0;
+  while (*s++ && maxlen--) {
+    len++;
+  }
+  return len;
+}