| //===-- Implementation of putc --------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/stdio/putc.h" |
| #include "src/__support/File/file.h" |
| |
| #include "src/errno/libc_errno.h" |
| #include <stdio.h> |
| |
| namespace __llvm_libc { |
| |
| LLVM_LIBC_FUNCTION(int, putc, (int c, ::FILE *stream)) { |
| unsigned char uc = static_cast<unsigned char>(c); |
| |
| auto result = reinterpret_cast<__llvm_libc::File *>(stream)->write(&uc, 1); |
| if (result.has_error()) |
| libc_errno = result.error; |
| size_t written = result.value; |
| |
| if (1 != written) { |
| // The stream should be in an error state in this case. |
| return EOF; |
| } |
| return 0; |
| } |
| |
| } // namespace __llvm_libc |