— Function: **random:uniform**

— Function:**random:uniform**` state`

— Function:

Returns an uniformly distributed inexact real random number in the range between 0 and 1.

— Function: **random:exp**

— Function:**random:exp**` state`

— Function:

Returns an inexact real in an exponential distribution with mean 1. For an exponential distribution with mean

uuse`(*`

u`(random:exp))`

.

— Function: **random:normal**

— Function:**random:normal**` state`

— Function:

Returns an inexact real in a normal distribution with mean 0 and standard deviation 1. For a normal distribution with mean

mand standard deviationduse`(+`

m`(*`

d`(random:normal)))`

.

— Procedure: **random:normal-vector!**` vect`

— Procedure:**random:normal-vector!**` vect state`

— Procedure:

Fills

vectwith inexact real random numbers which are independent and standard normally distributed (i.e., with mean 0 and variance 1).

— Procedure: **random:hollow-sphere!**` vect`

— Procedure:**random:hollow-sphere!**` vect state`

— Procedure:

Fills

vectwith inexact real random numbers the sum of whose squares is equal to 1.0. Thinking ofvectas coordinates in space of dimension n =`(vector-length`

vect`)`

, the coordinates are uniformly distributed over the surface of the unit n-shere.

— Procedure: **random:solid-sphere!**` vect`

— Procedure:**random:solid-sphere!**` vect state`

— Procedure:

Fills

vectwith inexact real random numbers the sum of whose squares is less than 1.0. Thinking ofvectas coordinates in space of dimensionn=`(vector-length`

vect`)`

, the coordinates are uniformly distributed within the unitn-shere. The sum of the squares of the numbers is returned.