1 files changed, 120 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__random/geometric_distribution.h b/contrib/llvm-project/libcxx/include/__random/geometric_distribution.h
new file mode 100644
index 000000000000..cecd7e57cfa6
--- /dev/null
+++ b/contrib/llvm-project/libcxx/include/__random/geometric_distribution.h
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___RANDOM_GEOMETRIC_DISTRIBUTION_H
+#define _LIBCPP___RANDOM_GEOMETRIC_DISTRIBUTION_H
+
+#include <__config>
+#include <__random/is_valid.h>
+#include <__random/negative_binomial_distribution.h>
+#include <iosfwd>
+#include <limits>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _IntType = int>
+class _LIBCPP_TEMPLATE_VIS geometric_distribution {
+  static_assert(__libcpp_random_is_valid_inttype<_IntType>::value, "IntType must be a supported integer type");
+
+public:
+  // types
+  typedef _IntType result_type;
+
+  class _LIBCPP_TEMPLATE_VIS param_type {
+    double __p_;
+
+  public:
+    typedef geometric_distribution distribution_type;
+
+    _LIBCPP_HIDE_FROM_ABI explicit param_type(double __p = 0.5) : __p_(__p) {}
+
+    _LIBCPP_HIDE_FROM_ABI double p() const { return __p_; }
+
+    friend _LIBCPP_HIDE_FROM_ABI bool operator==(const param_type& __x, const param_type& __y) {
+      return __x.__p_ == __y.__p_;
+    }
+    friend _LIBCPP_HIDE_FROM_ABI bool operator!=(const param_type& __x, const param_type& __y) { return !(__x == __y); }
+  };
+
+private:
+  param_type __p_;
+
+public:
+  // constructors and reset functions
+#ifndef _LIBCPP_CXX03_LANG
+  _LIBCPP_HIDE_FROM_ABI geometric_distribution() : geometric_distribution(0.5) {}
+  _LIBCPP_HIDE_FROM_ABI explicit geometric_distribution(double __p) : __p_(__p) {}
+#else
+  _LIBCPP_HIDE_FROM_ABI explicit geometric_distribution(double __p = 0.5) : __p_(__p) {}
+#endif
+  _LIBCPP_HIDE_FROM_ABI explicit geometric_distribution(const param_type& __p) : __p_(__p) {}
+  _LIBCPP_HIDE_FROM_ABI void reset() {}
+
+  // generating functions
+  template <class _URNG>
+  _LIBCPP_HIDE_FROM_ABI result_type operator()(_URNG& __g) {
+    return (*this)(__g, __p_);
+  }
+  template <class _URNG>
+  _LIBCPP_HIDE_FROM_ABI result_type operator()(_URNG& __g, const param_type& __p) {
+    return negative_binomial_distribution<result_type>(1, __p.p())(__g);
+  }
+
+  // property functions
+  _LIBCPP_HIDE_FROM_ABI double p() const { return __p_.p(); }
+
+  _LIBCPP_HIDE_FROM_ABI param_type param() const { return __p_; }
+  _LIBCPP_HIDE_FROM_ABI void param(const param_type& __p) { __p_ = __p; }
+
+  _LIBCPP_HIDE_FROM_ABI result_type min() const { return 0; }
+  _LIBCPP_HIDE_FROM_ABI result_type max() const { return numeric_limits<result_type>::max(); }
+
+  friend _LIBCPP_HIDE_FROM_ABI bool operator==(const geometric_distribution& __x, const geometric_distribution& __y) {
+    return __x.__p_ == __y.__p_;
+  }
+  friend _LIBCPP_HIDE_FROM_ABI bool operator!=(const geometric_distribution& __x, const geometric_distribution& __y) {
+    return !(__x == __y);
+  }
+};
+
+template <class _CharT, class _Traits, class _IntType>
+_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>&
+operator<<(basic_ostream<_CharT, _Traits>& __os, const geometric_distribution<_IntType>& __x) {
+  __save_flags<_CharT, _Traits> __lx(__os);
+  typedef basic_ostream<_CharT, _Traits> _OStream;
+  __os.flags(_OStream::dec | _OStream::left | _OStream::fixed | _OStream::scientific);
+  return __os << __x.p();
+}
+
+template <class _CharT, class _Traits, class _IntType>
+_LIBCPP_HIDE_FROM_ABI basic_istream<_CharT, _Traits>&
+operator>>(basic_istream<_CharT, _Traits>& __is, geometric_distribution<_IntType>& __x) {
+  typedef geometric_distribution<_IntType> _Eng;
+  typedef typename _Eng::param_type param_type;
+  __save_flags<_CharT, _Traits> __lx(__is);
+  typedef basic_istream<_CharT, _Traits> _Istream;
+  __is.flags(_Istream::dec | _Istream::skipws);
+  double __p;
+  __is >> __p;
+  if (!__is.fail())
+    __x.param(param_type(__p));
+  return __is;
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS
+
+#endif // _LIBCPP___RANDOM_GEOMETRIC_DISTRIBUTION_H