// random number generation (out of line) -*- C++ -*-
-// Copyright (C) 2009-2018 Free Software Foundation, Inc.
+// Copyright (C) 2009-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
- /*
- * (Further) implementation-space details.
- */
+ /// @cond undocumented
+ // (Further) implementation-space details.
namespace __detail
{
// General case for x = (ax + c) mod m -- use Schrage's algorithm
}
} // namespace __detail
+ /// @endcond
+#if ! __cpp_inline_variables
template<typename _UIntType, _UIntType __a, _UIntType __c, _UIntType __m>
constexpr _UIntType
linear_congruential_engine<_UIntType, __a, __c, __m>::multiplier;
template<typename _UIntType, _UIntType __a, _UIntType __c, _UIntType __m>
constexpr _UIntType
linear_congruential_engine<_UIntType, __a, __c, __m>::default_seed;
+#endif
/**
* Seeds the LCR with integral value @p __s, adjusted so that the
const linear_congruential_engine<_UIntType,
__a, __c, __m>& __lcr)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
linear_congruential_engine<_UIntType, __a, __c, __m>& __lcr)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec);
return __is;
}
-
+#if ! __cpp_inline_variables
template<typename _UIntType,
size_t __w, size_t __n, size_t __m, size_t __r,
_UIntType __a, size_t __u, _UIntType __d, size_t __s,
constexpr _UIntType
mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d,
__s, __b, __t, __c, __l, __f>::default_seed;
+#endif
template<typename _UIntType,
size_t __w, size_t __n, size_t __m, size_t __r,
const mersenne_twister_engine<_UIntType, __w, __n, __m,
__r, __a, __u, __d, __s, __b, __t, __c, __l, __f>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
mersenne_twister_engine<_UIntType, __w, __n, __m,
__r, __a, __u, __d, __s, __b, __t, __c, __l, __f>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
return __is;
}
-
+#if ! __cpp_inline_variables
template<typename _UIntType, size_t __w, size_t __s, size_t __r>
constexpr size_t
subtract_with_carry_engine<_UIntType, __w, __s, __r>::word_size;
subtract_with_carry_engine<_UIntType, __w, __s, __r>::long_lag;
template<typename _UIntType, size_t __w, size_t __s, size_t __r>
- constexpr _UIntType
+ constexpr uint_least32_t
subtract_with_carry_engine<_UIntType, __w, __s, __r>::default_seed;
+#endif
template<typename _UIntType, size_t __w, size_t __s, size_t __r>
void
subtract_with_carry_engine<_UIntType, __w, __s, __r>::
seed(result_type __value)
{
- std::linear_congruential_engine<result_type, 40014u, 0u, 2147483563u>
+ std::linear_congruential_engine<uint_least32_t, 40014u, 0u, 2147483563u>
__lcg(__value == 0u ? default_seed : __value);
const size_t __n = (__w + 31) / 32;
const subtract_with_carry_engine<_UIntType,
__w, __s, __r>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
subtract_with_carry_engine<_UIntType, __w, __s, __r>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
return __is;
}
-
+#if ! __cpp_inline_variables
template<typename _RandomNumberEngine, size_t __p, size_t __r>
constexpr size_t
discard_block_engine<_RandomNumberEngine, __p, __r>::block_size;
template<typename _RandomNumberEngine, size_t __p, size_t __r>
constexpr size_t
discard_block_engine<_RandomNumberEngine, __p, __r>::used_block;
+#endif
template<typename _RandomNumberEngine, size_t __p, size_t __r>
typename discard_block_engine<_RandomNumberEngine,
const discard_block_engine<_RandomNumberEngine,
__p, __r>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
discard_block_engine<_RandomNumberEngine, __p, __r>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
return __sum;
}
-
+#if ! __cpp_inline_variables
template<typename _RandomNumberEngine, size_t __k>
constexpr size_t
shuffle_order_engine<_RandomNumberEngine, __k>::table_size;
+#endif
+
+ namespace __detail
+ {
+ // Determine whether an integer is representable as double.
+ template<typename _Tp>
+ constexpr bool
+ __representable_as_double(_Tp __x) noexcept
+ {
+ static_assert(numeric_limits<_Tp>::is_integer, "");
+ static_assert(!numeric_limits<_Tp>::is_signed, "");
+ // All integers <= 2^53 are representable.
+ return (__x <= (1ull << __DBL_MANT_DIG__))
+ // Between 2^53 and 2^54 only even numbers are representable.
+ || (!(__x & 1) && __detail::__representable_as_double(__x >> 1));
+ }
+
+ // Determine whether x+1 is representable as double.
+ template<typename _Tp>
+ constexpr bool
+ __p1_representable_as_double(_Tp __x) noexcept
+ {
+ static_assert(numeric_limits<_Tp>::is_integer, "");
+ static_assert(!numeric_limits<_Tp>::is_signed, "");
+ return numeric_limits<_Tp>::digits < __DBL_MANT_DIG__
+ || (bool(__x + 1u) // return false if x+1 wraps around to zero
+ && __detail::__representable_as_double(__x + 1u));
+ }
+ }
template<typename _RandomNumberEngine, size_t __k>
typename shuffle_order_engine<_RandomNumberEngine, __k>::result_type
shuffle_order_engine<_RandomNumberEngine, __k>::
operator()()
{
- size_t __j = __k * ((_M_y - _M_b.min())
- / (_M_b.max() - _M_b.min() + 1.0L));
+ constexpr result_type __range = max() - min();
+ size_t __j = __k;
+ const result_type __y = _M_y - min();
+ // Avoid using slower long double arithmetic if possible.
+ if _GLIBCXX17_CONSTEXPR (__detail::__p1_representable_as_double(__range))
+ __j *= __y / (__range + 1.0);
+ else
+ __j *= __y / (__range + 1.0L);
_M_y = _M_v[__j];
_M_v[__j] = _M_b();
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const shuffle_order_engine<_RandomNumberEngine, __k>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
shuffle_order_engine<_RandomNumberEngine, __k>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const uniform_int_distribution<_IntType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
uniform_int_distribution<_IntType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type
+ = typename uniform_int_distribution<_IntType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_IntType __a, __b;
- __is >> __a >> __b;
- __x.param(typename uniform_int_distribution<_IntType>::
- param_type(__a, __b));
+ if (__is >> __a >> __b)
+ __x.param(param_type(__a, __b));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const uniform_real_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
uniform_real_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type
+ = typename uniform_real_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::skipws);
_RealType __a, __b;
- __is >> __a >> __b;
- __x.param(typename uniform_real_distribution<_RealType>::
- param_type(__a, __b));
+ if (__is >> __a >> __b)
+ __x.param(param_type(__a, __b));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const bernoulli_distribution& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const geometric_distribution<_IntType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
geometric_distribution<_IntType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type = typename geometric_distribution<_IntType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::skipws);
double __p;
- __is >> __p;
- __x.param(typename geometric_distribution<_IntType>::param_type(__p));
+ if (__is >> __p)
+ __x.param(param_type(__p));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const negative_binomial_distribution<_IntType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
negative_binomial_distribution<_IntType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type
+ = typename negative_binomial_distribution<_IntType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::skipws);
_IntType __k;
double __p;
- __is >> __k >> __p >> __x._M_gd;
- __x.param(typename negative_binomial_distribution<_IntType>::
- param_type(__k, __p));
+ if (__is >> __k >> __p >> __x._M_gd)
+ __x.param(param_type(__k, __p));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const poisson_distribution<_IntType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
poisson_distribution<_IntType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type = typename poisson_distribution<_IntType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::skipws);
double __mean;
- __is >> __mean >> __x._M_nd;
- __x.param(typename poisson_distribution<_IntType>::param_type(__mean));
+ if (__is >> __mean >> __x._M_nd)
+ __x.param(param_type(__mean));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const binomial_distribution<_IntType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
binomial_distribution<_IntType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type = typename binomial_distribution<_IntType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_IntType __t;
double __p;
- __is >> __t >> __p >> __x._M_nd;
- __x.param(typename binomial_distribution<_IntType>::
- param_type(__t, __p));
+ if (__is >> __t >> __p >> __x._M_nd)
+ __x.param(param_type(__t, __p));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const exponential_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
exponential_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type
+ = typename exponential_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_RealType __lambda;
- __is >> __lambda;
- __x.param(typename exponential_distribution<_RealType>::
- param_type(__lambda));
+ if (__is >> __lambda)
+ __x.param(param_type(__lambda));
__is.flags(__flags);
return __is;
{
if (__d1._M_param == __d2._M_param
&& __d1._M_saved_available == __d2._M_saved_available)
- {
- if (__d1._M_saved_available
- && __d1._M_saved == __d2._M_saved)
- return true;
- else if(!__d1._M_saved_available)
- return true;
- else
- return false;
- }
+ return __d1._M_saved_available ? __d1._M_saved == __d2._M_saved : true;
else
return false;
}
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const normal_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
normal_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type = typename normal_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
double __mean, __stddev;
- __is >> __mean >> __stddev
- >> __x._M_saved_available;
- if (__x._M_saved_available)
- __is >> __x._M_saved;
- __x.param(typename normal_distribution<_RealType>::
- param_type(__mean, __stddev));
+ bool __saved_avail;
+ if (__is >> __mean >> __stddev >> __saved_avail)
+ {
+ if (!__saved_avail || (__is >> __x._M_saved))
+ {
+ __x._M_saved_available = __saved_avail;
+ __x.param(param_type(__mean, __stddev));
+ }
+ }
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const lognormal_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
lognormal_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type
+ = typename lognormal_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_RealType __m, __s;
- __is >> __m >> __s >> __x._M_nd;
- __x.param(typename lognormal_distribution<_RealType>::
- param_type(__m, __s));
+ if (__is >> __m >> __s >> __x._M_nd)
+ __x.param(param_type(__m, __s));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const chi_squared_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
chi_squared_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type
+ = typename chi_squared_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_RealType __n;
- __is >> __n >> __x._M_gd;
- __x.param(typename chi_squared_distribution<_RealType>::
- param_type(__n));
+ if (__is >> __n >> __x._M_gd)
+ __x.param(param_type(__n));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const cauchy_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
cauchy_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type = typename cauchy_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_RealType __a, __b;
- __is >> __a >> __b;
- __x.param(typename cauchy_distribution<_RealType>::
- param_type(__a, __b));
+ if (__is >> __a >> __b)
+ __x.param(param_type(__a, __b));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const fisher_f_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
fisher_f_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type
+ = typename fisher_f_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_RealType __m, __n;
- __is >> __m >> __n >> __x._M_gd_x >> __x._M_gd_y;
- __x.param(typename fisher_f_distribution<_RealType>::
- param_type(__m, __n));
+ if (__is >> __m >> __n >> __x._M_gd_x >> __x._M_gd_y)
+ __x.param(param_type(__m, __n));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const student_t_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
student_t_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type
+ = typename student_t_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_RealType __n;
- __is >> __n >> __x._M_nd >> __x._M_gd;
- __x.param(typename student_t_distribution<_RealType>::param_type(__n));
+ if (__is >> __n >> __x._M_nd >> __x._M_gd)
+ __x.param(param_type(__n));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const gamma_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
gamma_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type = typename gamma_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_RealType __alpha_val, __beta_val;
- __is >> __alpha_val >> __beta_val >> __x._M_nd;
- __x.param(typename gamma_distribution<_RealType>::
- param_type(__alpha_val, __beta_val));
+ if (__is >> __alpha_val >> __beta_val >> __x._M_nd)
+ __x.param(param_type(__alpha_val, __beta_val));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const weibull_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
weibull_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type = typename weibull_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_RealType __a, __b;
- __is >> __a >> __b;
- __x.param(typename weibull_distribution<_RealType>::
- param_type(__a, __b));
+ if (__is >> __a >> __b)
+ __x.param(param_type(__a, __b));
__is.flags(__flags);
return __is;
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const extreme_value_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
extreme_value_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using param_type
+ = typename extreme_value_distribution<_RealType>::param_type;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
_RealType __a, __b;
- __is >> __a >> __b;
- __x.param(typename extreme_value_distribution<_RealType>::
- param_type(__a, __b));
+ if (__is >> __a >> __b)
+ __x.param(param_type(__a, __b));
__is.flags(__flags);
return __is;
const double __sum = std::accumulate(_M_prob.begin(),
_M_prob.end(), 0.0);
+ __glibcxx_assert(__sum > 0);
// Now normalize the probabilites.
__detail::__normalize(_M_prob.begin(), _M_prob.end(), _M_prob.begin(),
__sum);
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const discrete_distribution<_IntType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
return __os;
}
+namespace __detail
+{
+ template<typename _ValT, typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ __extract_params(basic_istream<_CharT, _Traits>& __is,
+ vector<_ValT>& __vals, size_t __n)
+ {
+ __vals.reserve(__n);
+ while (__n--)
+ {
+ _ValT __val;
+ if (__is >> __val)
+ __vals.push_back(__val);
+ else
+ break;
+ }
+ return __is;
+ }
+} // namespace __detail
+
template<typename _IntType, typename _CharT, typename _Traits>
std::basic_istream<_CharT, _Traits>&
operator>>(std::basic_istream<_CharT, _Traits>& __is,
discrete_distribution<_IntType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
size_t __n;
- __is >> __n;
-
- std::vector<double> __prob_vec;
- __prob_vec.reserve(__n);
- for (; __n != 0; --__n)
+ if (__is >> __n)
{
- double __prob;
- __is >> __prob;
- __prob_vec.push_back(__prob);
+ std::vector<double> __prob_vec;
+ if (__detail::__extract_params(__is, __prob_vec, __n))
+ __x.param({__prob_vec.begin(), __prob_vec.end()});
}
- __x.param(typename discrete_distribution<_IntType>::
- param_type(__prob_vec.begin(), __prob_vec.end()));
-
__is.flags(__flags);
return __is;
}
const double __sum = std::accumulate(_M_den.begin(),
_M_den.end(), 0.0);
+ __glibcxx_assert(__sum > 0);
__detail::__normalize(_M_den.begin(), _M_den.end(), _M_den.begin(),
__sum);
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const piecewise_constant_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
piecewise_constant_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
size_t __n;
- __is >> __n;
-
- std::vector<_RealType> __int_vec;
- __int_vec.reserve(__n + 1);
- for (size_t __i = 0; __i <= __n; ++__i)
+ if (__is >> __n)
{
- _RealType __int;
- __is >> __int;
- __int_vec.push_back(__int);
- }
-
- std::vector<double> __den_vec;
- __den_vec.reserve(__n);
- for (size_t __i = 0; __i < __n; ++__i)
- {
- double __den;
- __is >> __den;
- __den_vec.push_back(__den);
+ std::vector<_RealType> __int_vec;
+ if (__detail::__extract_params(__is, __int_vec, __n + 1))
+ {
+ std::vector<double> __den_vec;
+ if (__detail::__extract_params(__is, __den_vec, __n))
+ {
+ __x.param({ __int_vec.begin(), __int_vec.end(),
+ __den_vec.begin() });
+ }
+ }
}
- __x.param(typename piecewise_constant_distribution<_RealType>::
- param_type(__int_vec.begin(), __int_vec.end(), __den_vec.begin()));
-
__is.flags(__flags);
return __is;
}
_M_cp.push_back(__sum);
_M_m.push_back((_M_den[__k + 1] - _M_den[__k]) / __delta);
}
+ __glibcxx_assert(__sum > 0);
// Now normalize the densities...
__detail::__normalize(_M_den.begin(), _M_den.end(), _M_den.begin(),
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
const piecewise_linear_distribution<_RealType>& __x)
{
- typedef std::basic_ostream<_CharT, _Traits> __ostream_type;
- typedef typename __ostream_type::ios_base __ios_base;
+ using __ios_base = typename basic_ostream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __os.flags();
const _CharT __fill = __os.fill();
operator>>(std::basic_istream<_CharT, _Traits>& __is,
piecewise_linear_distribution<_RealType>& __x)
{
- typedef std::basic_istream<_CharT, _Traits> __istream_type;
- typedef typename __istream_type::ios_base __ios_base;
+ using __ios_base = typename basic_istream<_CharT, _Traits>::ios_base;
const typename __ios_base::fmtflags __flags = __is.flags();
__is.flags(__ios_base::dec | __ios_base::skipws);
size_t __n;
- __is >> __n;
-
- std::vector<_RealType> __int_vec;
- __int_vec.reserve(__n + 1);
- for (size_t __i = 0; __i <= __n; ++__i)
+ if (__is >> __n)
{
- _RealType __int;
- __is >> __int;
- __int_vec.push_back(__int);
- }
-
- std::vector<double> __den_vec;
- __den_vec.reserve(__n + 1);
- for (size_t __i = 0; __i <= __n; ++__i)
- {
- double __den;
- __is >> __den;
- __den_vec.push_back(__den);
+ vector<_RealType> __int_vec;
+ if (__detail::__extract_params(__is, __int_vec, __n + 1))
+ {
+ vector<double> __den_vec;
+ if (__detail::__extract_params(__is, __den_vec, __n + 1))
+ {
+ __x.param({ __int_vec.begin(), __int_vec.end(),
+ __den_vec.begin() });
+ }
+ }
}
-
- __x.param(typename piecewise_linear_distribution<_RealType>::
- param_type(__int_vec.begin(), __int_vec.end(), __den_vec.begin()));
-
__is.flags(__flags);
return __is;
}
- template<typename _IntType>
+ template<typename _IntType, typename>
seed_seq::seed_seq(std::initializer_list<_IntType> __il)
{
+ _M_v.reserve(__il.size());
for (auto __iter = __il.begin(); __iter != __il.end(); ++__iter)
_M_v.push_back(__detail::__mod<result_type,
__detail::_Shift<result_type, 32>::__value>(*__iter));
template<typename _InputIterator>
seed_seq::seed_seq(_InputIterator __begin, _InputIterator __end)
{
+ if _GLIBCXX17_CONSTEXPR (__is_random_access_iter<_InputIterator>::value)
+ _M_v.reserve(std::distance(__begin, __end));
+
for (_InputIterator __iter = __begin; __iter != __end; ++__iter)
_M_v.push_back(__detail::__mod<result_type,
__detail::_Shift<result_type, 32>::__value>(*__iter));
const size_t __q = __p + __t;
const size_t __m = std::max(size_t(__s + 1), __n);
- for (size_t __k = 0; __k < __m; ++__k)
+#ifndef __UINT32_TYPE__
+ struct _Up
+ {
+ _Up(uint_least32_t v) : _M_v(v & 0xffffffffu) { }
+
+ operator uint_least32_t() const { return _M_v; }
+
+ uint_least32_t _M_v;
+ };
+ using uint32_t = _Up;
+#endif
+
+ // k == 0, every element in [begin,end) equals 0x8b8b8b8bu
{
- _Type __arg = (__begin[__k % __n]
- ^ __begin[(__k + __p) % __n]
- ^ __begin[(__k - 1) % __n]);
- _Type __r1 = __arg ^ (__arg >> 27);
- __r1 = __detail::__mod<_Type,
- __detail::_Shift<_Type, 32>::__value>(1664525u * __r1);
- _Type __r2 = __r1;
- if (__k == 0)
- __r2 += __s;
- else if (__k <= __s)
- __r2 += __k % __n + _M_v[__k - 1];
- else
- __r2 += __k % __n;
- __r2 = __detail::__mod<_Type,
- __detail::_Shift<_Type, 32>::__value>(__r2);
- __begin[(__k + __p) % __n] += __r1;
- __begin[(__k + __q) % __n] += __r2;
- __begin[__k % __n] = __r2;
+ uint32_t __r1 = 1371501266u;
+ uint32_t __r2 = __r1 + __s;
+ __begin[__p] += __r1;
+ __begin[__q] = (uint32_t)__begin[__q] + __r2;
+ __begin[0] = __r2;
+ }
+
+ for (size_t __k = 1; __k <= __s; ++__k)
+ {
+ const size_t __kn = __k % __n;
+ const size_t __kpn = (__k + __p) % __n;
+ const size_t __kqn = (__k + __q) % __n;
+ uint32_t __arg = (__begin[__kn]
+ ^ __begin[__kpn]
+ ^ __begin[(__k - 1) % __n]);
+ uint32_t __r1 = 1664525u * (__arg ^ (__arg >> 27));
+ uint32_t __r2 = __r1 + (uint32_t)__kn + _M_v[__k - 1];
+ __begin[__kpn] = (uint32_t)__begin[__kpn] + __r1;
+ __begin[__kqn] = (uint32_t)__begin[__kqn] + __r2;
+ __begin[__kn] = __r2;
+ }
+
+ for (size_t __k = __s + 1; __k < __m; ++__k)
+ {
+ const size_t __kn = __k % __n;
+ const size_t __kpn = (__k + __p) % __n;
+ const size_t __kqn = (__k + __q) % __n;
+ uint32_t __arg = (__begin[__kn]
+ ^ __begin[__kpn]
+ ^ __begin[(__k - 1) % __n]);
+ uint32_t __r1 = 1664525u * (__arg ^ (__arg >> 27));
+ uint32_t __r2 = __r1 + (uint32_t)__kn;
+ __begin[__kpn] = (uint32_t)__begin[__kpn] + __r1;
+ __begin[__kqn] = (uint32_t)__begin[__kqn] + __r2;
+ __begin[__kn] = __r2;
}
for (size_t __k = __m; __k < __m + __n; ++__k)
{
- _Type __arg = (__begin[__k % __n]
- + __begin[(__k + __p) % __n]
- + __begin[(__k - 1) % __n]);
- _Type __r3 = __arg ^ (__arg >> 27);
- __r3 = __detail::__mod<_Type,
- __detail::_Shift<_Type, 32>::__value>(1566083941u * __r3);
- _Type __r4 = __r3 - __k % __n;
- __r4 = __detail::__mod<_Type,
- __detail::_Shift<_Type, 32>::__value>(__r4);
- __begin[(__k + __p) % __n] ^= __r3;
- __begin[(__k + __q) % __n] ^= __r4;
- __begin[__k % __n] = __r4;
+ const size_t __kn = __k % __n;
+ const size_t __kpn = (__k + __p) % __n;
+ const size_t __kqn = (__k + __q) % __n;
+ uint32_t __arg = (__begin[__kn]
+ + __begin[__kpn]
+ + __begin[(__k - 1) % __n]);
+ uint32_t __r3 = 1566083941u * (__arg ^ (__arg >> 27));
+ uint32_t __r4 = __r3 - __kn;
+ __begin[__kpn] ^= __r3;
+ __begin[__kqn] ^= __r4;
+ __begin[__kn] = __r4;
}
}
projects / thirdparty / gcc.git / blobdiff