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C Library Functions  - init_random_seed_by_dat (3)

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NAME

init_random_seed_by_dat(3f) - [M_random] seed random_number(3f) with values from date_and_time(3f) (LICENSE:MIT)

CONTENTS

Synopsis
Description
Examples
Author
License

SYNOPSIS

subroutine init_random_seed_by_dat()

DESCRIPTION

A simple wrapper around random_seed(3f) that uses the date_and_time(3f) intrinsic to initialize the seed so you can easily call random_number(3f) with varying pseudo-random real number sequences

EXAMPLES

Sample program:

    program demo_init_random_seed_by_dat
    use M_random, only : init_random_seed_by_dat
    integer :: i
    real    :: x
       call init_random_seed_by_dat()
       do i=1,10
          ! generate real pseudo-random numbers from 0 to <1.0
          call random_number(x)
          write(*,*)i,x
       enddo
    end program demo_init_random_seed_by_dat

Results

     >     1  0.644704163
     >     2  0.244343698
     >     3  0.516471267
     >     4  0.296542704
     >     5  0.681771278
     >     6  0.449223280
     >     7  0.915870190
     >     8  0.466257989
     >     9  0.912388682
     >    10  0.597788215

AUTHOR

John S. Urban

LICENSE

MIT License

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Nemo Release 3.1

init_random_seed_by_dat (3)

June 29, 2025

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