libc/src/stdlib/strtod.cpp

   1 //===-- Implementation of strtod ------------------------------------------===//
   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/stdlib/strtod.h"
  10 #include "src/__support/common.h"
  11 #include "src/__support/str_to_float.h"
  12 #include "src/errno/libc_errno.h"
  13
  14 namespace LIBC_NAMESPACE {
  15
  16 LLVM_LIBC_FUNCTION(double, strtod,
  17                    (const char *__restrict str, char **__restrict str_end)) {
  18   auto result = internal::strtofloatingpoint<double>(str);
  19   if (result.has_error())
  20     libc_errno = result.error;
  21
  22   if (str_end != NULL)
  23     *str_end = const_cast<char *>(str + result.parsed_len);
  24
  25   return result.value;
  26 }
  27
  28 } // namespace LIBC_NAMESPACE