Portability Subroutine: Changes the starting point of the pseudorandom number generator.
USE IFPORT
CALL SEED (iseed)
iseed |
(Input) INTEGER(4). Starting point for RANDOM. |
SEED uses iseed to establish the starting point of the pseudorandom number generator. A given seed always produces the same sequence of values from RANDOM.
If SEED is not called before the first call to RANDOM, RANDOM always begins with a seed value of one. If a program must have a different pseudorandom sequence each time it runs, pass the constant RND$TIMESEED (defined in IFPORT.F90) to the SEED routine before the first call to RANDOM.
This routine is not thread-safe.
CONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIB
USE IFPORT
REAL myrand
CALL SEED(7531)
CALL RANDOM(myrand)