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SFDT$–System Standard Format Date and Time
22.2. PLUS Interface
SFDT$ can be called directly from PLUS programs. The packet for SFDT$ is described in
22.2.1. The calling sequence for SFDT$ is described in 22.2.2.
22.2.1. Packet
Required Data Structures
SFDT$ requires a five-word packet and a seven-word (or less) buffer area. The packet
passes parameters to SFDT$ and the buffer area contains the ASCII date/time string
generated by SFDT$. These data structures are defined as follows:
DEFINE TYPE SFDT_BUFFER = 28 ASCII CHARACTERS LOCATABLE;
DEFINE TYPE SFDT_PACKET = MAPPED LOCATABLE
[*: LOGICAL(6),
SFDT_DATE_FORMAT: 6 BIT INTEGER,
SFDT_TIME_FORMAT: 6 BIT INTEGER,
SFDT_SEPARATOR: 6 BIT STATUS (S’SPACE’:0, S’DASH’:1),
*: LOGICAL(6),
SFDT_PACKET_VERSION: 6 BIT INTEGER,
SFDT_CHAR_OFFSET: 6 BIT INTEGER,
SFDT_BUFFER_LENGTH: 6 BIT INTEGER,
SFDT_NUMBER_CHAR: 6 BIT INTEGER,
SFDT_ERROR_CODE: 18 BIT SIGNED INTEGER,
SFDT_BUFFER_ADDRESS: 36 BIT MACHINE POINTER,
SFDT_DATE: 36 BIT MACHINE LOGICAL,
SFDT_TIME: 36 BIT MACHINE LOGICAL];
The calling program can use these data types to set up the necessary data entities for
SFDT$. For example
DECLARE buffer: SFDT_BUFFER;
DECLARE pkt: SFDT_PACKET;
where:
buffer
pkt
An identifier of a buffer that SFDT$ places the ASCII date/time string into.
An identifier of a data entity that passes information to SFDT$.
The type definitions for SFDT_BUFFER and SFDT_PACKET are available in PLUS COPY
elements (see 22.2.2).
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