Expression | Return type | Pre/post-condition | Complexity |
T | compile-time | ||
Creates a seed sequence
with the same initial state as all other default-constructed seed sequences
of type S. | constant | ||
Creates a seed sequence
having internal state
that depends on some or all of the bits
of the supplied sequence . | |||
Same as S(il.begin(), il.end()). | same as S(il.begin(), il.end()) | ||
void | Does nothing if rb == re. Otherwise,
fills the supplied sequence
with 32-bit quantities
that depend on the sequence supplied to the constructor
and possibly also depend on the history
of generate's previous invocations. | ||
size_t | The number of 32-bit units
that would be copied
by a call to r.param. | constant | |
void | Copies to the given destination
a sequence of 32-bit units
that can be provided
to the constructor of a second object of type S,
and that would reproduce in that second object
a state indistinguishable
from the state of the first object. |
template<class G> concept uniform_random_bit_generator = invocable<G&> && unsigned_integral<invoke_result_t<G&>> && requires { { G::min() } -> same_as<invoke_result_t<G&>>; { G::max() } -> same_as<invoke_result_t<G&>>; requires bool_constant<(G::min() < G::max())>::value; };
Expression | Return type | Pre/post-condition | Complexity |
Creates an engine
with the same initial state
as all other default-constructed engines
of type E. | |||
Creates an engine
that compares equal to x. | |||
Creates an engine
with initial state determined by s. | |||
Creates an engine
with an initial state
that depends on a sequence
produced by one call
to q.generate. | same as complexity of q.generate
called on a sequence
whose length is size of state | ||
void | same as E() | ||
void | same as E(s) | ||
void | same as E(q) | ||
T | per [rand.req.urng] | ||
void | no worse than the complexity
of z consecutive calls e() | ||
bool | This operator is an equivalence relation. With and
as the infinite sequences of values
that would be generated
by repeated future calls
to x() and y(),
respectively,
returns true
if ;
else returns false. | ||
bool | !(x == y). | ||
reference to the type of os | With os.fmtflags set to
ios_base::dec|ios_base::left
and the fill character set to the space character,
writes to os
the textual representation
of x's current state. In the output,
adjacent numbers are separated
by one or more space characters. | ||
reference to the type of is | With is.fmtflags
set to ios_base::dec,
sets v's state
as determined by reading its textual representation from is. If bad input is encountered,
ensures that v's state is unchanged by the operation
and
calls is.setstate(ios_base::failbit)
(which may throw ios_base::failure ([iostate.flags])). If a textual representation written via os << x
was subsequently read via is >> v,
then x == v
provided that there have been no intervening invocations
of x or of v. Preconditions: is provides a textual representation
that was previously written
using an output stream
whose imbued locale
was the same as that of is,
and whose type's template specialization arguments
charT and traits
were respectively the same as those of is. |
A::A();
bool operator==(const A& a1, const A& a2);
A::A(result_type s);
template<class Sseq> A::A(Sseq& q);
void seed();
void seed(result_type s);
template<class Sseq> void seed(Sseq& q);
Expression | Return type | Pre/post-condition | Complexity |
T | compile-time | ||
P | compile-time | ||
Creates a distribution whose behavior is indistinguishable
from that of any other newly default-constructed distribution
of type D. | constant | ||
Creates a distribution whose behavior is indistinguishable
from that of a distribution
newly constructed directly from the values used to construct p. | same as p's construction | ||
void | constant | ||
P | no worse than the complexity of D(p) | ||
void | no worse than the complexity of D(p) | ||
T | With ,
the sequence of numbers
returned by successive invocations
with the same object g
is randomly distributed
according to the associated
p(z |{p})
or
function. | amortized constant number of invocations of g | |
T | The sequence of numbers
returned by successive invocations
with the same objects g and p
is randomly distributed
according to the associated
p(z |{p})
or
function. | amortized constant number of invocations of g | |
T | Returns glb. | constant | |
T | Returns lub. | constant | |
bool | This operator is an equivalence relation. Returns true
if x.param() == y.param() and ,
where and are
the infinite sequences of values
that would be generated, respectively,
by repeated future calls
to x(g1) and y(g2)
whenever g1 == g2. Otherwise returns false. | constant | |
bool | !(x == y). | same as x == y. | |
reference to the type of os | |||
reference to the type of is | If bad input is encountered,
ensures that d is unchanged by the operation
and
calls is.setstate(ios_base::failbit)
(which may throw ios_base::failure ([iostate.flags])). Preconditions: is provides a textual representation
that was previously written
using an os whose imbued locale
and whose type's template specialization arguments
charT and traits
were the same as those of is. |