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20.1.22.18 Instruction mgetsiz

Synopsys:

mgetsiz

Given a map-able value in the TOS, push its mapping size-bound as a bit-offset. If the value is not map-able, or if it is not bounded by size, push PVM_NULL.

Note that only array values can have mappings bounded by size.

Stack: ( VAL -- VAL ULONG )