1 //===-- Implementation of atoi --------------------------------------------===// 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/atoi.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(int, atoi, (const char *str)) { 18 // This is done because the standard specifies that atoi is identical to 19 // (int)(strtol). 20 auto result = internal::strtointeger<long>(str, 10); 21 if (result.has_error()) 22 libc_errno = result.error; 23 24 return static_cast<int>(result); 25 } 26 27 } // namespace LIBC_NAMESPACE_DECL 28