ATOMIC_FETCH_ADD— Atomic ADD operation with prior fetch
ATOMIC_FETCH_ADD(ATOM, VALUE, OLD)atomically stores the value of ATOM in OLD and adds the value of VAR to the variable ATOM. When STAT is present and the invokation was successful, it is assigned the value 0. If it is present and the invokation has failed, it is assigned a positive value; in particular, for a coindexed ATOM, if the remote image has stopped, it is assigned the value of
STAT_STOPPED_IMAGEand if the remote image has failed, the value
CALL ATOMIC_FETCH_ADD (ATOM, VALUE, old [, STAT])
|ATOM||Scalar coarray or coindexed variable of integer
type with |
|VALUE||Scalar of the same type as ATOM. If the kind
is different, the value is converted to the kind of ATOM.
|OLD||Scalar of the same type and kind as ATOM.
|STAT||(optional) Scalar default-kind integer variable.
program atomic use iso_fortran_env integer(atomic_int_kind) :: atom[*], old call atomic_add (atom, this_image(), old) end program atomic