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C Library Functions  - random_hex (3)

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NAME

random_hex(3f) - [M_random] create a string representing a random hexadecimal value of specified length (LICENSE:MIT)

CONTENTS

Synopsis
Description
Options
Returns
Examples
Author
License

SYNOPSIS

function random_hex(chars,length) result(out)

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

DESCRIPTION

Generate a random string representing a hexadecimal value of a given length

OPTIONS

length	number of characters to place in output string

RETURNS

out	string of LENGTH characters randomly filled with characters representing a hexadecimal value

EXAMPLES

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

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Nemo Release 3.1

random_hex (3)

June 29, 2025

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