| //===-- Implementation of strlen ------------------------------------------===// | 
 | // | 
 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | 
 | // See https://llvm.org/LICENSE.txt for license information. | 
 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | 
 | // | 
 | //===----------------------------------------------------------------------===// | 
 |  | 
 | #include "src/string/strlen.h" | 
 | #include "src/string/string_utils.h" | 
 |  | 
 | #include "src/__support/common.h" | 
 |  | 
 | namespace __llvm_libc { | 
 |  | 
 | // TODO: investigate the performance of this function. | 
 | // There might be potential for compiler optimization. | 
 | LLVM_LIBC_FUNCTION(size_t, strlen, (const char *src)) { | 
 |   return internal::string_length(src); | 
 | } | 
 |  | 
 | } // namespace __llvm_libc |