libc/src/inttypes/strtoumax.cpp

   1 //===-- Implementation of strtoumax ---------------------------------------===//
   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/inttypes/strtoumax.h"
  10 #include "src/__support/common.h"
  11 #include "src/__support/macros/config.h"
  12 #include "src/__support/str_to_integer.h"
  13 #include "src/errno/libc_errno.h"
  14
  15 namespace LIBC_NAMESPACE_DECL {
  16
  17 LLVM_LIBC_FUNCTION(uintmax_t, strtoumax,
  18                    (const char *__restrict str, char **__restrict str_end,
  19                     int base)) {
  20   auto result = internal::strtointeger<uintmax_t>(str, base);
  21   if (result.has_error())
  22     libc_errno = result.error;
  23
  24   if (str_end != nullptr)
  25     *str_end = const_cast<char *>(str + result.parsed_len);
  26
  27   return result;
  28 }
  29
  30 } // namespace LIBC_NAMESPACE_DECL