1 //===-- Implementation of strnlen------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "src/string/strnlen.h" 10 #include "src/string/string_utils.h" 11 12 #include "src/__support/common.h" 13 #include <stddef.h> 14 15 namespace LIBC_NAMESPACE { 16 17 LLVM_LIBC_FUNCTION(size_t, strnlen, (const char *src, size_t n)) { 18 const void *temp = internal::find_first_character( 19 reinterpret_cast<const unsigned char *>(src), '\0', n); 20 return temp ? reinterpret_cast<const char *>(temp) - src : n; 21 } 22 23 } // namespace LIBC_NAMESPACE 24