Public Types¶

typedef _UIntType result_type

Public Member Functions¶

template<class _Gen > linear_congruential (_Gen &__g)
linear_congruential (unsigned long __x0=1)
result_type max () const
result_type min () const
result_type operator() ()
template<class _Gen > void seed (_Gen &__g)
void seed (unsigned long __s=1)

Static Public Attributes¶

static const _UIntType increment
static const _UIntType modulus
static const _UIntType multiplier

Friends¶

bool operator!= (const linear_congruential &__lhs, const linear_congruential &__rhs)
template<class _UIntType1 , _UIntType1 __a1, _UIntType1 __c1, _UIntType1 __m1, typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const linear_congruential< _UIntType1, __a1, __c1, __m1 > &__lcr)
bool operator== (const linear_congruential &__lhs, const linear_congruential &__rhs)
template<class _UIntType1 , _UIntType1 __a1, _UIntType1 __c1, _UIntType1 __m1, typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is, linear_congruential< _UIntType1, __a1, __c1, __m1 > &__lcr)

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> class std::linear_congruential< _UIntType, __a, __c, __m >¶

A model of a linear congruential random number generator.

A random number generator that produces pseudorandom numbers using the 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 346 of file tr1_impl/random.

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> typedef _UIntType std::linear_congruential< _UIntType, __a, __c, __m >::result_type The type of the generated random value.¶

Definition at line 353 of file tr1_impl/random.

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> std::linear_congruential< _UIntType, __a, __c, __m >::linear_congruential (unsigned long __x0 = 1) [inline, explicit] Constructs a linear_congruential random number generator engine with seed __s. The default seed value is 1.¶

Parameters:

Definition at line 369 of file tr1_impl/random.

References std::linear_congruential< _UIntType, __a, __c, __m >::seed().

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> template<class _Gen > std::linear_congruential< _UIntType, __a, __c, __m >::linear_congruential (_Gen & __g) [inline] Constructs a linear_congruential random number generator engine seeded from the generator function __g.¶

Parameters:

Definition at line 379 of file tr1_impl/random.

References std::linear_congruential< _UIntType, __a, __c, __m >::seed().

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> result_type std::linear_congruential< _UIntType, __a, __c, __m >::max () const [inline] Gets the largest possible value in the output range.¶

Definition at line 416 of file tr1_impl/random.

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> result_type std::linear_congruential< _UIntType, __a, __c, __m >::min () const [inline] 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 409 of file tr1_impl/random.

template<class _UIntType , _UIntType __a, _UIntType __c, _UIntType __m> linear_congruential< _UIntType, __a, __c, __m >::result_type std::linear_congruential< _UIntType, __a, __c, __m >::operator() () [inline] Gets the next random number in the sequence.¶

Gets the next generated value in sequence.

Definition at line 130 of file random.tcc.

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> template<class _Gen > void std::linear_congruential< _UIntType, __a, __c, __m >::seed (_Gen & __g) [inline] Reseeds the linear_congruential random number generator engine sequence using values from the generator function __g.¶

Parameters:

Definition at line 399 of file tr1_impl/random.

References std::linear_congruential< _UIntType, __a, __c, __m >::seed().

Referenced by std::linear_congruential< _UIntType, __a, __c, __m >::seed().

template<class _UIntType , _UIntType __a, _UIntType __c, _UIntType __m> void std::linear_congruential< _UIntType, __a, __c, __m >::seed (unsigned long __x0 = 1) [inline] Reseeds the linear_congruential random number generator engine sequence to the seed __s.¶

Parameters:

Seeds the LCR with integral value __x0, adjusted so that the ring identity is never a member of the convergence set.

Definition at line 98 of file random.tcc.

Referenced by std::linear_congruential< _UIntType, __a, __c, __m >::linear_congruential().

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> bool operator!= (const linear_congruential< _UIntType, __a, __c, __m > & __lhs, const linear_congruential< _UIntType, __a, __c, __m > & __rhs) [friend] Compares two linear congruential random number generator objects of the same type for inequality.¶

Parameters:

Returns:

Definition at line 449 of file tr1_impl/random.

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> template<class _UIntType1 , _UIntType1 __a1, _UIntType1 __c1, _UIntType1 __m1, typename _CharT , typename _Traits > std::basic_ostream<_CharT, _Traits>& operator<< (std::basic_ostream< _CharT, _Traits > & __os, const linear_congruential< _UIntType1, __a1, __c1, __m1 > & __lcr) [friend] Writes the textual representation of the state x(i) of x to __os.¶

Parameters:

Returns:

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> bool operator== (const linear_congruential< _UIntType, __a, __c, __m > & __lhs, const linear_congruential< _UIntType, __a, __c, __m > & __rhs) [friend] Compares two linear congruential random number generator objects of the same type for equality.¶

Parameters:

Returns:

Definition at line 435 of file tr1_impl/random.

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> template<class _UIntType1 , _UIntType1 __a1, _UIntType1 __c1, _UIntType1 __m1, typename _CharT , typename _Traits > std::basic_istream<_CharT, _Traits>& operator>> (std::basic_istream< _CharT, _Traits > & __is, linear_congruential< _UIntType1, __a1, __c1, __m1 > & __lcr) [friend] 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:

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> const _UIntType std::linear_congruential< _UIntType, __a, __c, __m >::increment [static] An increment.¶

Definition at line 358 of file tr1_impl/random.

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> const _UIntType std::linear_congruential< _UIntType, __a, __c, __m >::modulus [static] The modulus.¶

Definition at line 360 of file tr1_impl/random.

template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> const _UIntType std::linear_congruential< _UIntType, __a, __c, __m >::multiplier [static] The multiplier.¶

Definition at line 356 of file tr1_impl/random.