1 //===-- Implementation of strncasecmp -------------------------------------===// 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/strncasecmp.h" 10 11 #include "src/__support/common.h" 12 #include "src/__support/ctype_utils.h" 13 #include "src/__support/macros/config.h" 14 #include "src/string/memory_utils/inline_strcmp.h" 15 16 namespace LIBC_NAMESPACE_DECL { 17 18 LLVM_LIBC_FUNCTION(int, strncasecmp, 19 (const char *left, const char *right, size_t n)) { __anonbe809b090102(char a, char b) 20 auto case_cmp = [](char a, char b) { 21 return LIBC_NAMESPACE::internal::tolower(a) - 22 LIBC_NAMESPACE::internal::tolower(b); 23 }; 24 return inline_strncmp(left, right, n, case_cmp); 25 } 26 27 } // namespace LIBC_NAMESPACE_DECL 28