
<ConsistencyModule:> sum(+Collection,+Rel,?Sum,?Bool)

   Reflect into Bool the truth of the sum of the elements of Collection satisfying the relation sum(Collection) Rel Sum.

Arguments
   Collection          Collection of integers or (domain) variables.
   RelOp               One of the atom: #>, #>=, #<, #=<, #=, #\=
   Sum                 (Domain) variable or integer (array notation accepted)
   Bool                (Domain) variable or the integer 0 or 1 (array notation accepted)

Type
   library(gfd)

Description
          This is the reified form of sum/3, which constrains the sum
          of  the elements in Collection to satisfy the relation 
          sum(Collection) Rel Sum.
	  
          Rel can be one of #>, #>=, #<, #=<, #=, #\= (or equivalently,
          >, >=, <, =<, =, \=).
	  
	  Any input variables which are not already domain variable will be
          turn into domain variables with default bounds.
	  
          ConsistencyModule is the optional module specification to give the 
          consistency level for the propagation for this constraint: 
          gfd_bc for bounds consistency 
          
          This constraint is implemented using Gecode's linear() constraint
          (reified version).
          
    

See Also
   sum / 3
