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/errno/libc_errno.h" 13 14 namespace LIBC_NAMESPACE { 15 16 LLVM_LIBC_FUNCTION(off_t, ftello, (::FILE * stream)) { 17 auto result = reinterpret_cast<LIBC_NAMESPACE::File *>(stream)->tell(); 18 if (!result.has_value()) { 19 libc_errno = result.error(); 20 return -1; 21 } 22 return result.value(); 23 } 24 25 } // namespace LIBC_NAMESPACE 26