The formula for the exponential probability mass function is .
Mean | |
Median | |
Mode | |
Range | |
Standard Deviation |
Definition at line 2148 of file tr1_impl/random.
std::exponential_distribution< _RealType >::exponential_distribution | ( | const result_type & | __lambda = result_type(1) |
) | [inline, explicit] |
Constructs an exponential distribution with inverse scale parameter .
Definition at line 2161 of file tr1_impl/random.
_RealType std::exponential_distribution< _RealType >::lambda | ( | ) | const [inline] |
Gets the inverse scale parameter of the distribution.
Definition at line 2171 of file tr1_impl/random.
void std::exponential_distribution< _RealType >::reset | ( | ) | [inline] |
Resets the distribution.
Has no effect on exponential distributions.
Definition at line 2180 of file tr1_impl/random.
std::basic_ostream<_CharT, _Traits>& operator<< | ( | std::basic_ostream< _CharT, _Traits > & | __os, | |
const exponential_distribution< _RealType1 > & | __x | |||
) | [friend] |
Inserts a exponential_distribution random number distribution __x
into the output stream __os
.
__os | An output stream. | |
__x | A exponential_distribution random number distribution. |
__x
inserted or in an error state. std::basic_istream<_CharT, _Traits>& operator>> | ( | std::basic_istream< _CharT, _Traits > & | __is, | |
exponential_distribution< _RealType > & | __x | |||
) | [friend] |
Extracts a exponential_distribution random number distribution __x
from the input stream __is
.
__is | An input stream. | |
__x | A exponential_distribution random number generator engine. |
__x
extracted or in an error state. Definition at line 2214 of file tr1_impl/random.