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//===-- 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
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