DAT_BASIC

Map primitive as basic units

Description:

Map a primitive as a sequence of basic machine units (bytes) for reading, writing or updating.

Invocation

CALL DAT_BASIC( LOC, MODE, PNTR, LEN, STATUS )

Arguments

LOC = CHARACTER ∗ ( DAT__SZLOC ) (Given)
Primitive locator.
MODE = CHARACTER ∗ ( DAT__SZMOD ) (Given)
Access mode (’READ’, ’UPDATE’ or ’WRITE’).
PNTR = INTEGER (Returned)
Pointer to the mapped value.
LEN = INTEGER (Returned)
Total number of bytes mapped.
STATUS = INTEGER (Given and Returned)
The global status.

Notes:

If the primitive data have been written on a different machine which uses a different data representation, then they will be mapped as written (i.e. they will not be converted to or from the data representation used by the host machine).
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