1 //===-- Implementation of isxdigit-----------------------------------------===// 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/ctype/isxdigit.h" 10 #include "src/__support/ctype_utils.h" 11 12 #include "src/__support/common.h" 13 14 namespace LIBC_NAMESPACE { 15 16 // TODO: Currently restricted to default locale. 17 // These should be extended using locale information. 18 LLVM_LIBC_FUNCTION(int, isxdigit, (int c)) { 19 const unsigned ch = static_cast<unsigned>(c); 20 return static_cast<int>(internal::isdigit(ch) || (ch | 32) - 'a' < 6); 21 } 22 23 } // namespace LIBC_NAMESPACE 24