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//===-- Implementation of wctomb ------------------------------------------===//
//
// 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/stdlib/wctomb.h"
#include "hdr/types/wchar_t.h"
#include "src/__support/common.h"
#include "src/__support/libc_errno.h"
#include "src/__support/macros/config.h"
#include "src/__support/wchar/mbstate.h"
#include "src/__support/wchar/wcrtomb.h"
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(int, wctomb, (char *s, wchar_t wc)) {
static internal::mbstate internal_mbstate;
if (s == nullptr)
return 0;
auto result = internal::wcrtomb(s, wc, &internal_mbstate);
if (!result.has_value()) { // invalid wide character
libc_errno = EILSEQ;
return -1;
}
return static_cast<int>(result.value());
}
} // namespace LIBC_NAMESPACE_DECL
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