ExpFloat64 returns an exponentially distributed float64 in the range (0, +math.MaxFloat64] with an exponential distribution whose rate parameter (lambda) is 1 and whose mean is 1/lambda (1).

Float32 returns, as a float32, a pseudo-random number in [0.0,1.0).

Float64 returns, as a float64, a pseudo-random number in [0.0,1.0).

Int returns a non-negative pseudo-random int.

Int31 returns a non-negative pseudo-random 31-bit integer as an int32.

Int31n returns, as an int32, a non-negative pseudo-random number in [0,n).

Int63 returns a non-negative pseudo-random 63-bit integer as an int64.

Int63n returns, as an int64, a non-negative pseudo-random number in [0,n).

Intn returns, as an int, a non-negative pseudo-random number in [0,n).

New returns a new Rand that uses random values from src to generate other random values.

NewSource returns a new pseudo-random Source seeded with the given value.

NewZipf returns a Zipf generating variates p(k) on [0, imax] proportional to (v+k)**(-s) where s>1 and k>=0, and v>=1.

NormFloat64 returns a normally distributed float64 in the range [-math.MaxFloat64, +math.MaxFloat64] with standard normal distribution (mean = 0, stddev = 1).

Perm returns, as a slice of n ints, a pseudo-random permutation of the integers [0,n).

Seed uses the provided seed value to initialize the generator to a deterministic state.

Uint32 returns a pseudo-random 32-bit value as a uint32.

A Rand is a source of random numbers.

A Zipf generates Zipf distributed variates.

A Source represents a source of uniformly-distributed pseudo-random int64 values in the range [0, 1<<63).