Visible to Intel only — GUID: GUID-D7C5CFED-FAEC-4735-87BF-9C7792E03F9E
Visible to Intel only — GUID: GUID-D7C5CFED-FAEC-4735-87BF-9C7792E03F9E
ATOMIC_ADD
Atomic Intrinsic Subroutine (Generic): Performs atomic addition.
CALL ATOMIC_ADD (atom, value [, stat])
atom |
(Input; output) Must be a scalar coarray or coindexed object and of type integer with kind ATOMIC_INT_KIND. It becomes defined with the value of atom + value if no error occurs. Otherwise, it becomes undefined. ATOMIC_INT_KIND is a named constant in the intrinsic module ISO_FORTRAN_ENV. |
value |
(Input) Must be a scalar integer. The value of value and value + atom must be representable as integers with kind ATOMIC_INT_KIND. |
stat |
(Output; optional) Must be a non-coindexed integer scalar with a decimal exponent range of at least four (KIND=2 or greater). The value assigned to stat is specified in Overview of Atomic Subroutines. If stat is not present and an error condition occurs, error termination is initiated. |
Example
Consider the following:
CALL ATOMIC_ADD (N[12], 7)
If N on image 12 is 4 when this operation is initiated, the value of N on image 12 is defined with the value 11 when the operation is complete and no error occurs during the subroutine reference.