reduction_op

The operators a parallel reduction can combine values with.

Declaration

Syntax

reduction_op
    = ReduceAdd
    | ReduceSub
    | ReduceMul
    | ReduceMIN
    | ReduceMAX
    | ReduceIAND
    | ReduceIOR
    | ReduceIEOR
    | ReduceAND
    | ReduceOR
    | ReduceEQV
    | ReduceNEQV

Values

Value	Meaning
ReduceAdd	sum.
ReduceSub	difference.
ReduceMul	product.
ReduceMIN	minimum.
ReduceMAX	maximum.
ReduceIAND	bitwise and.
ReduceIOR	bitwise or.
ReduceIEOR	bitwise exclusive or.
ReduceAND	logical and (.and.).
ReduceOR	logical or (.or.).
ReduceEQV	logical equivalence (.eqv.).
ReduceNEQV	logical non-equivalence (.neqv.).

Return values

None. An enumeration value is not evaluated.

Description

Used by do concurrent locality specifiers and by the OpenMP reduction clause. Every operator here is associative, which is what lets the iterations be combined in any order.

See Also

DoConcurrentLoop, reduction_expr, OMPReduction