| std::linear_congruential_engine< _UIntType, __a, __c, __m >(3cxx) | std::linear_congruential_engine< _UIntType, __a, __c, __m >(3cxx) |
std::linear_congruential_engine< _UIntType, __a, __c, __m > - A model of a linear congruential random number generator.
typedef _UIntType result_type
linear_congruential_engine (result_type
__s=default_seed)
Constructs a linear_congruential_engine random number generator engine with
seed __s. The default seed value is 1. template<typename _Sseq ,
typename = typename std::enable_if<!std::is_same<_Sseq,
linear_congruential_engine>::value> ::type>
linear_congruential_engine (_Sseq &__q)
Constructs a linear_congruential_engine random number generator engine seeded
from the seed sequence __q. void discard (unsigned long long
__z)
Discard a sequence of random numbers. result_type operator() ()
Gets the next random number in the sequence. void seed
(result_type __s=default_seed)
Reseeds the linear_congruential_engine random number generator engine sequence
to the seed __s. template<typename _Sseq > std::enable_if<
std::is_class< _Sseq >::value >::type seed (_Sseq
&__q)
Reseeds the linear_congruential_engine random number generator engine sequence
using values from the seed sequence __q.
static constexpr result_type max ()
Gets the largest possible value in the output range. static constexpr
result_type min ()
Gets the smallest possible value in the output range.
static constexpr result_type default_seed
static constexpr result_type increment
static constexpr result_type modulus
static constexpr result_type multiplier
template<typename _UIntType1 , _UIntType1 __a1, _UIntType1
__c1, _UIntType1 __m1, typename _CharT , typename _Traits >
std::basic_ostream< _CharT, _Traits > &
operator<< (std::basic_ostream< _CharT, _Traits >
&__os, const std::linear_congruential_engine< _UIntType1,
__a1, __c1, __m1 > &__lcr)
Writes the textual representation of the state x(i) of x to __os. bool
operator== (const linear_congruential_engine &__lhs, const
linear_congruential_engine &__rhs)
Compares two linear congruential random number generator objects of the same
type for equality. template<typename _UIntType1 , _UIntType1 __a1,
_UIntType1 __c1, _UIntType1 __m1, typename _CharT , typename _Traits >
std::basic_istream< _CharT, _Traits > &
operator>> (std::basic_istream< _CharT, _Traits >
&__is, std::linear_congruential_engine< _UIntType1, __a1,
__c1, __m1 > &__lcr)
Sets the state of the engine by reading its textual representation from
__is.
class std::linear_congruential_engine< _UIntType, __a, __c, __m >" A model of a linear congruential random number generator.
A random number generator that produces pseudorandom numbers via linear function: x_{i+1}
The template parameter _UIntType must be an unsigned integral type large enough to store values up to (__m-1). If the template parameter __m is 0, the modulus __m used is std::numeric_limits<_UIntType>::max() plus 1. Otherwise, the template parameters __a and __c must be less than __m.
The size of the state is $1$.
Definition at line 236 of file random.h.
The type of the generated random value.
Definition at line 239 of file random.h.
Constructs a linear_congruential_engine random number generator engine with seed __s. The default seed value is 1.
Parameters:
Definition at line 263 of file random.h.
Constructs a linear_congruential_engine random number generator engine seeded from the seed sequence __q.
Parameters:
Definition at line 276 of file random.h.
Discard a sequence of random numbers.
Definition at line 320 of file random.h.
Gets the largest possible value in the output range.
Definition at line 313 of file random.h.
Gets the smallest possible value in the output range. The minimum depends on the __c parameter: if it is zero, the minimum generated must be > 0, otherwise 0 is allowed.
Definition at line 306 of file random.h.
Gets the next random number in the sequence.
Definition at line 330 of file random.h.
Reseeds the linear_congruential_engine random number generator engine sequence to the seed __s.
Parameters:
Seeds the LCR with integral value __s, adjusted so that the ring identity is never a member of the convergence set.
Definition at line 120 of file bits/random.tcc.
Reseeds the linear_congruential_engine random number generator engine sequence using values from the seed sequence __q.
Parameters:
Seeds the LCR engine with a value generated by __q.
Definition at line 136 of file bits/random.tcc.
References std::__lg(), std::dec(), std::fixed(), std::ios_base::flags(), std::left(), and std::__detail::operator>>().
Writes the textual representation of the state x(i) of x to __os.
Parameters:
Returns:
Compares two linear congruential random number generator objects of the same type for equality.
Parameters:
Returns:
Definition at line 348 of file random.h.
Sets the state of the engine by reading its textual representation from __is. The textual representation must have been previously written using an output stream whose imbued locale and whose type's template specialization arguments _CharT and _Traits were the same as those of __is.
Parameters:
Returns:
An increment.
Definition at line 250 of file random.h.
The modulus.
Definition at line 252 of file random.h.
The multiplier.
Definition at line 248 of file random.h.
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| Mon Feb 25 2019 | libstdc++ |