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- Function:
**random:uniform** - Function:
**random:uniform***state* Returns an uniformly distributed inexact real random number in the range between 0 and 1.

- Function:
**random:exp** - Function:
**random:exp***state* Returns an inexact real in an exponential distribution with mean 1. For an exponential distribution with mean

`u`use`(*`

.`u`(random:exp))

- Function:
**random:normal** - Function:
**random:normal***state* Returns an inexact real in a normal distribution with mean 0 and standard deviation 1. For a normal distribution with mean

`m`and standard deviation`d`use`(+`

.`m`(*`d`(random:normal)))

- Procedure:
**random:normal-vector!***vect* - Procedure:
**random:normal-vector!***vect state* Fills

`vect`with 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* Fills

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

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

- Procedure:
**random:solid-sphere!***vect* - Procedure:
**random:solid-sphere!***vect state* Fills

`vect`with inexact real random numbers the sum of whose squares is less than 1.0. Thinking of`vect`as coordinates in space of dimension`n`=`(vector-length`

, the coordinates are uniformly distributed within the unit`vect`)`n`-shere. The sum of the squares of the numbers is returned.