8.100 SRAND — Reinitialize the random number generator

Description:

SRAND reinitializes the pseudo-random number generator called by RAND and IRAND. The new seed used by the generator is specified by the required argument SEED.

Option:

gnu

Class:

non-elemental subroutine

Syntax:

CALL SRAND(SEED)

Arguments:

SEED	shall be a scalar INTEGER(kind=4).

Return value:

Does not return.

Example:

See RAND and IRAND for examples.

Notes:

The Fortran 2003 standard specifies the intrinsic RANDOM_SEED to initialize the pseudo-random numbers generator and RANDOM_NUMBER to generate pseudo-random numbers. Please note that in gfortran, these two sets of intrinsics (RAND, IRAND and SRAND on the one hand, RANDOM_NUMBER and RANDOM_SEED on the other hand) access two independent pseudo-random numbers generators.