# cupy.random.wald¶

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

Wald distribution.

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

$f(x) = \sqrt{\frac{\lambda}{2\pi x^3}}\ e^{\frac{-\lambda(x-\mu)^2}{2\mu^2x}}.$
Parameters: mean (float) – Parameter of the wald distribution $$\mu$$. scale (float) – Parameter of the wald distribution $$\lambda$$. 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. Samples drawn from the wald distribution. cupy.ndarray