Prefix and Suffix Functions III

The functions all take (more or less) the same arguments, for example:

 MINVAL_PREFIX(ARRAY[,DIM][,MASK][,SEGMENT][,EXCLUSIVE])

• a MASK argument works as in Fortran 90,
• COPY_ ... doesn't have MASK and EXCLUSIVE,
• ALL_ ..., ANY_ ..., COUNT_ ... and PARITY_ ... do not have MASK as ARRAY is LOGICAL.

MASK and SEGMENT are LOGICAL, MASK conforms to ARRAY, SEGMENT has same shape as ARRAY.

Example of the MASK argument,

PRODUCT_PREFIX((/1,2,3,4/), MASK=(/T,F,T,F/)) = (/1,1,3,3/)

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