
!goto $wims_read_parm

:def
title=Greatest Common Divisor
synonyme=gcd
input=list
!exit

:proc

n=!itemcnt $formula
!if $n<=1
 result=$[$formula]
 !exit
!endif

u=!item 1 of $formula
v=!item 2 of $formula
u=!rawmath $u
v=!rawmath $v
src=gcd($u,$v)
!if $n>2
 !for i=3 to $n
  v=!item $i of $formula
  v=!rawmath $v
  src=gcd($src,$v)
 !next i
!endif

result=!exec pari $src
!exit

:output
!htmlmath gcd($formula) = $result
 .
!exit

