NAG Library Function Document
nag_rand_basic (g05sac) generates a vector of pseudorandom numbers taken from a uniform distribution between and .
||nag_rand_basic (Integer n,
nag_rand_basic (g05sac) generates values from a uniform distribution over the half closed interval .
One of the initialization functions nag_rand_init_repeatable (g05kfc)
(for a repeatable sequence if computed sequentially) or nag_rand_init_nonrepeatable (g05kgc)
(for a non-repeatable sequence) must be called prior to the first call to nag_rand_basic (g05sac).
Knuth D E (1981) The Art of Computer Programming (Volume 2) (2nd Edition) Addison–Wesley
n – IntegerInput
On entry: , the number of pseudorandom numbers to be generated.
state – IntegerCommunication Array
, of this array is dictated by the requirements of associated functions that must have been previously called. This array MUST be the same array passed as argument state
in the previous call to nag_rand_init_repeatable (g05kfc)
or nag_rand_init_nonrepeatable (g05kgc)
On entry: contains information on the selected base generator and its current state.
On exit: contains updated information on the state of the generator.
x[n] – doubleOutput
On exit: the pseudorandom numbers from a uniform distribution over the half closed interval .
fail – NagError *Input/Output
The NAG error argument (see Section 3.6
in the Essential Introduction).
6 Error Indicators and Warnings
On entry, argument had an illegal value.
On entry, .
An internal error has occurred in this function. Check the function call and any array sizes. If the call is correct then please contact NAG
On entry, state
vector has been corrupted or not initialized.
8 Parallelism and Performance
This example prints the first five pseudorandom numbers from a uniform distribution between
, generated by nag_rand_basic (g05sac) after initialization by nag_rand_init_repeatable (g05kfc)
10.1 Program Text
Program Text (g05sace.c)
10.2 Program Data
10.3 Program Results
Program Results (g05sace.r)