libc/src/ctype/isxdigit.cpp

   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 #include "src/__support/macros/config.h"
  14
  15 namespace LIBC_NAMESPACE_DECL {
  16
  17 LLVM_LIBC_FUNCTION(int, isxdigit, (int c)) {
  18   const unsigned ch = static_cast<unsigned>(c);
  19   return static_cast<int>(internal::isdigit(ch) || (ch | 32) - 'a' < 6);
  20 }
  21
  22 } // namespace LIBC_NAMESPACE_DECL