Freeze libcxx for cuda without c++20 support

commit_hash:c2eb32b5cb16638c17c6fc6900738f26ba6eca49

1 files changed, 86 insertions, 0 deletions

diff --git a/contrib/libs/cxxsupp/libcxxcuda11/src/charconv.cpp b/contrib/libs/cxxsupp/libcxxcuda11/src/charconv.cpp
new file mode 100644
index 0000000000..aa52220413
--- /dev/null
+++ b/contrib/libs/cxxsupp/libcxxcuda11/src/charconv.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// 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 <charconv>
+#include <string.h>
+
+#include "include/to_chars_floating_point.h"
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_ABI_DO_NOT_EXPORT_TO_CHARS_BASE_10
+
+namespace __itoa
+{
+
+_LIBCPP_EXPORTED_FROM_ABI char*
+__u32toa(uint32_t value, char* buffer) noexcept
+{
+  return __base_10_u32(buffer, value);
+}
+
+_LIBCPP_EXPORTED_FROM_ABI char*
+__u64toa(uint64_t value, char* buffer) noexcept
+{
+  return __base_10_u64(buffer, value);
+}
+
+}  // namespace __itoa
+
+#endif // _LIBCPP_ABI_DO_NOT_EXPORT_TO_CHARS_BASE_10
+
+// The original version of floating-point to_chars was written by Microsoft and
+// contributed with the following license.
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// This implementation is dedicated to the memory of Mary and Thavatchai.
+
+to_chars_result to_chars(char* __first, char* __last, float __value) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Plain>(__first, __last, __value, chars_format{}, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, double __value) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Plain>(__first, __last, __value, chars_format{}, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, long double __value) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Plain>(__first, __last, static_cast<double>(__value),
+                                                                 chars_format{}, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, float __value, chars_format __fmt) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_only>(__first, __last, __value, __fmt, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, double __value, chars_format __fmt) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_only>(__first, __last, __value, __fmt, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, long double __value, chars_format __fmt) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_only>(__first, __last, static_cast<double>(__value),
+                                                                       __fmt, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, float __value, chars_format __fmt, int __precision) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_precision>(__first, __last, __value, __fmt,
+                                                                            __precision);
+}
+
+to_chars_result to_chars(char* __first, char* __last, double __value, chars_format __fmt, int __precision) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_precision>(__first, __last, __value, __fmt,
+                                                                            __precision);
+}
+
+to_chars_result to_chars(char* __first, char* __last, long double __value, chars_format __fmt, int __precision) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_precision>(
+      __first, __last, static_cast<double>(__value), __fmt, __precision);
+}
+
+_LIBCPP_END_NAMESPACE_STD