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PRODUCT
— Product of array elementsTRUE
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RESULT = PRODUCT(ARRAY[, MASK])
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RESULT = PRODUCT(ARRAY, DIM[, MASK])
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ARRAY | Shall be an array of type INTEGER ,
REAL or COMPLEX .
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DIM | (Optional) shall be a scalar of type
INTEGER with a value in the range from 1 to n, where n
equals the rank of ARRAY.
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MASK | (Optional) shall be of type LOGICAL
and either be a scalar or an array of the same shape as ARRAY.
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If DIM is absent, a scalar with the product of all elements in
ARRAY is returned. Otherwise, an array of rank n-1, where n equals
the rank of ARRAY, and a shape similar to that of ARRAY with
dimension DIM dropped is returned.
PROGRAM test_product INTEGER :: x(5) = (/ 1, 2, 3, 4 ,5 /) print *, PRODUCT(x) ! all elements, product = 120 print *, PRODUCT(x, MASK=MOD(x, 2)==1) ! odd elements, product = 15 END PROGRAM