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).