Next: RANDOM_SEED, Previous: RANDOM_INIT, Up: Intrinsic Procedures
RANDOM_NUMBER
— Pseudo-random numberThe runtime-library implements the xoshiro256** pseudorandom number generator (PRNG). This generator has a period of 2^256 - 1, and when using multiple threads up to 2^128 threads can each generate 2^128 random numbers before any aliasing occurs.
Note that in a multi-threaded program (e.g. using OpenMP directives),
each thread will have its own random number state. For details of the
seeding procedure, see the documentation for the RANDOM_SEED
intrinsic.
CALL RANDOM_NUMBER(HARVEST)
HARVEST | Shall be a scalar or an array of type REAL .
|
program test_random_number REAL :: r(5,5) CALL RANDOM_NUMBER(r) end program