libc/src/stdlib/atof.cpp

   1 //===-- Implementation of atof --------------------------------------------===//
   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/atof.h"
  10 #include "src/__support/common.h"
  11 #include "src/__support/macros/config.h"
  12 #include "src/__support/str_to_float.h"
  13 #include "src/errno/libc_errno.h"
  14
  15 namespace LIBC_NAMESPACE_DECL {
  16
  17 LLVM_LIBC_FUNCTION(double, atof, (const char *str)) {
  18   auto result = internal::strtofloatingpoint<double>(str);
  19   if (result.has_error())
  20     libc_errno = result.error;
  21
  22   return result.value;
  23 }
  24
  25 } // namespace LIBC_NAMESPACE_DECL