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One proposal suggested allowing elemental invocation of pure procedures
(see Section ) under certain conditions. The
essential idea was that functions with scalar arguments which could be
guaranteed to have no side effects could be invoked elementally, as are
intrinsic functions such as SIN. The proposal was rejected in a
narrow vote, in part because it was seen as too large a change to
Fortran 90. After its rejection, the committee voted unanimously to
recommend that the ANSI X3J3 committee consider user-defined elemental
functions for a future version of Fortran.
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