1 //===-- Implementation of ftello ------------------------------------------===// 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/stdio/ftello.h" 10 #include "src/__support/File/file.h" 11 12 #include "src/__support/macros/config.h" 13 #include "src/errno/libc_errno.h" 14 15 namespace LIBC_NAMESPACE_DECL { 16 17 LLVM_LIBC_FUNCTION(off_t, ftello, (::FILE * stream)) { 18 auto result = reinterpret_cast<LIBC_NAMESPACE::File *>(stream)->tell(); 19 if (!result.has_value()) { 20 libc_errno = result.error(); 21 return -1; 22 } 23 return result.value(); 24 } 25 26 } // namespace LIBC_NAMESPACE_DECL 27