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C Library Functions  - setdiff (3)

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NAME

setdiff(3f) - [M_sets] return setdiff values in array A

CONTENTS

Synopsis
Description
Options
Example
Authors
License

SYNOPSIS

setdiff(A,B, setOrder)

DESCRIPTION

Set difference of two arrays.
	C = setdiff(A,B) returns the data in A that is not in B, with no repetitions. C is in sorted order by default.

OPTIONS

A	input array
B	input array
setOrder
	May be "sort" or "stable"

EXAMPLE

sample program:

   program demo_setdiff
   use M_sets, only: setdiff
   character(len=*),parameter :: g=’(*(g0,1x))’
   integer, allocatable      :: A(:)
   integer, allocatable      :: B(:)

      write(*,g) ’SETDIFF’,’Find the values in A that are not in B.’
       A=[3, 6, 2, 1, 5, 1, 1]
       B=[2, 4, 6]
       write(*,g) ’A=’, A
       write(*,g) ’B=’, B
       write(*,g) setdiff(A, B)
       write(*,g) setdiff([4, 1, 3, 2, 5], [2, 1], ’sorted’)
       write(*,g) setdiff([4, 1, 3, 2, 5], [2, 1], ’stable’)

   end program demo_setdiff

Results:

 > SETDIFF Find the values in A that are not in B.
 > A= 3 6 2 1 5 1 1
 > B= 2 4 6
 > 1 3 5
 > 3 4 5
 > 4 3 5

AUTHORS

John S. Urban, 2023-07-20

LICENSE

CC0-1.0

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Nemo Release 3.1

setdiff (3)

July 22, 2023

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