1 | //===-- Implementation of putchar -----------------------------------------===// |
---|---|
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/putchar.h" |
10 | #include "src/__support/File/file.h" |
11 | |
12 | #include "hdr/types/FILE.h" |
13 | #include "src/__support/libc_errno.h" |
14 | #include "src/__support/macros/config.h" |
15 | #include <stddef.h> |
16 | |
17 | namespace LIBC_NAMESPACE_DECL { |
18 | |
19 | LLVM_LIBC_FUNCTION(int, putchar, (int c)) { |
20 | unsigned char uc = static_cast<unsigned char>(c); |
21 | |
22 | auto result = LIBC_NAMESPACE::stdout->write(&uc, 1); |
23 | if (result.has_error()) |
24 | libc_errno = result.error; |
25 | size_t written = result.value; |
26 | |
27 | if (1 != written) { |
28 | // The stream should be in an error state in this case. |
29 | return EOF; |
30 | } |
31 | return 0; |
32 | } |
33 | |
34 | } // namespace LIBC_NAMESPACE_DECL |
35 |