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/str_to_integer.h" 12 #include "src/errno/libc_errno.h" 13 14 namespace LIBC_NAMESPACE { 15 16 LLVM_LIBC_FUNCTION(int, atoi, (const char *str)) { 17 // This is done because the standard specifies that atoi is identical to 18 // (int)(strtol). 19 auto result = internal::strtointeger<long>(str, 10); 20 if (result.has_error()) 21 libc_errno = result.error; 22 23 return static_cast<int>(result); 24 } 25 26 } // namespace LIBC_NAMESPACE 27