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Manual Reference Pages  - random_hex (3)

NAME
random_hex(3f) - [M_random] create random string composed of provided characters of specified length (LICENSE:MIT)

CONTENTS

Synopsis
Description
Options
Result
Example
Author
License

SYNOPSIS
function random_hex(chars,length) result(out) 

    character(len=*),intent(in)     :: chars
    integer,intent(in)              :: length
    character(len=:),allocatable    :: out

DESCRIPTION
Given a length, generate a random string of the specified length representing a hexadecimal value

OPTIONS
chars list of characters to generate random string with
length number of characters to place in output string

RESULT
out string of LENGTH characters randomly filled with characters from CHARS

EXAMPLE
Sample program: 

    program demo_random_hex
    use M_random, only : random_hex, init_random_seed_by_dat
       character(len=64) :: hexstring
       ! use date and time to create a seed for calling random_seed(3f)
       call init_random_seed_by_dat()
       ! write random hexadecimal value for use
       ! as something like an X11 authorization key
       hexstring=random_hex(len(hexstring))
       write(*,’(a)’)hexstring
    end program demo_random_hex
Results 

    2363a3589736e23be0137ec7ebc9d74297a963f27958a176daea3dd850ed8487

AUTHOR
John S. Urban

LICENSE
MIT License

random_hex (3) October 17, 2020
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