# cupy.random.standard_exponential¶

cupy.random.standard_exponential(size=None, dtype=<class 'float'>)[source]

Standard exponential distribution.

Returns an array of samples drawn from the standard exponential distribution. Its probability density function is defined as

$f(x) = e^{-x}.$
Parameters
• size (int or tuple of ints) – The shape of the array. If None, a zero-dimensional array is generated.

• dtype – Data type specifier. Only numpy.float32 and numpy.float64 types are allowed.

Returns

Samples drawn from the standard exponential distribution.

Return type

cupy.ndarray