1 files changed, 30 insertions, 0 deletions
diff --git a/libc/src/wchar/wcstol.cpp b/libc/src/wchar/wcstol.cpp
new file mode 100644
index 000000000000..a05718f706df
--- /dev/null
+++ b/libc/src/wchar/wcstol.cpp
@@ -0,0 +1,30 @@
+//===-- Implementation of wcstol ------------------------------------------===//
+//
+// 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/wchar/wcstol.h"
+#include "src/__support/common.h"
+#include "src/__support/libc_errno.h"
+#include "src/__support/macros/config.h"
+#include "src/__support/wcs_to_integer.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(long, wcstol,
+                   (const wchar_t *__restrict str, wchar_t **__restrict str_end,
+                    int base)) {
+  auto result = internal::wcstointeger<long>(str, base);
+  if (result.has_error())
+    libc_errno = result.error;
+
+  if (str_end != nullptr)
+    *str_end = const_cast<wchar_t *>(str + result.parsed_len);
+
+  return result;
+}
+
+} // namespace LIBC_NAMESPACE_DECL