1*71db0c75SAndroid Build Coastguard Worker //===-- Implementation of strnlen------------------------------------------===// 2*71db0c75SAndroid Build Coastguard Worker // 3*71db0c75SAndroid Build Coastguard Worker // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*71db0c75SAndroid Build Coastguard Worker // See https://llvm.org/LICENSE.txt for license information. 5*71db0c75SAndroid Build Coastguard Worker // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*71db0c75SAndroid Build Coastguard Worker // 7*71db0c75SAndroid Build Coastguard Worker //===----------------------------------------------------------------------===// 8*71db0c75SAndroid Build Coastguard Worker 9*71db0c75SAndroid Build Coastguard Worker #include "src/string/strnlen.h" 10*71db0c75SAndroid Build Coastguard Worker #include "src/__support/macros/config.h" 11*71db0c75SAndroid Build Coastguard Worker #include "src/string/string_utils.h" 12*71db0c75SAndroid Build Coastguard Worker 13*71db0c75SAndroid Build Coastguard Worker #include "src/__support/common.h" 14*71db0c75SAndroid Build Coastguard Worker #include <stddef.h> 15*71db0c75SAndroid Build Coastguard Worker 16*71db0c75SAndroid Build Coastguard Worker namespace LIBC_NAMESPACE_DECL { 17*71db0c75SAndroid Build Coastguard Worker 18*71db0c75SAndroid Build Coastguard Worker LLVM_LIBC_FUNCTION(size_t, strnlen, (const char *src, size_t n)) { 19*71db0c75SAndroid Build Coastguard Worker const void *temp = internal::find_first_character( 20*71db0c75SAndroid Build Coastguard Worker reinterpret_cast<const unsigned char *>(src), '\0', n); 21*71db0c75SAndroid Build Coastguard Worker return temp ? reinterpret_cast<const char *>(temp) - src : n; 22*71db0c75SAndroid Build Coastguard Worker } 23*71db0c75SAndroid Build Coastguard Worker 24*71db0c75SAndroid Build Coastguard Worker } // namespace LIBC_NAMESPACE_DECL 25