C Library Functions  - random_int (3)

NAME
random_int(3f) - [M_random] return an integer between low and high value inclusive (LICENSE:MIT)

CONTENTS

Synopsis
Description
Options
Returns
Examples
Author
License

SYNOPSIS
function random_int(first,last) result(rand_int) 

     integer,intent(in) :: first,last
     integer            :: rand_int

DESCRIPTION
Return an integer uniformly distributed from the set {first,,first+1,...,last-1,last}.

OPTIONS
first lowest value of range of integer values to randomly return
last highest value of range of integer values to randomly return

RETURNS
rand_int
  a random integer value between FIRST LAST inclusive

EXAMPLES
Sample program 

   program demo_random_int
   use M_random, only : random_int, init_random_seed_by_system_clock
   implicit none
   integer :: i
   call init_random_seed_by_system_clock()
   write(*,’(*(i0:,1x))’)(random_int(1,10),i=1,20)
   write(*,’(*(i0:,1x))’)(random_int(-5,5),i=1,20)
   end program demo_random_int
Sample output
1 3 8 1 2 6 8 7 4 10 7 3 8 3 10 1 5 2 9 8
4 5 -3 5 2 -5 -4 4 -5
  -3 -2 -2 -2 -1 -2 4 -2 -2 4 -4

AUTHOR
John S. Urban

LICENSE
MIT License

Nemo Release 3.1 random_int (3) June 29, 2025
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