| //===-- Implementation of isxdigit-----------------------------------------===// |
| // |
| // 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/ctype/isxdigit.h" |
| |
| #include "src/__support/CPP/limits.h" |
| #include "src/__support/common.h" |
| #include "src/__support/ctype_utils.h" |
| #include "src/__support/macros/config.h" |
| |
| namespace LIBC_NAMESPACE_DECL { |
| |
| LLVM_LIBC_FUNCTION(int, isxdigit, (int c)) { |
| if (c < 0 || c > cpp::numeric_limits<unsigned char>::max()) |
| return 0; |
| const char ch = static_cast<char>(c); |
| return static_cast<int>(internal::isalnum(ch) && |
| internal::b36_char_to_int(ch) < 16); |
| } |
| |
| } // namespace LIBC_NAMESPACE_DECL |
