IAI PSEL, Руководство по эксплуатации

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[15] Multi-Branching
398
z
WS (Select if true; character)
Command, declaration Extension
condition
(LD, A, O, AB, OB)
Input condition
(I/O, flag)
Command,
declaration
Operand 1 Operand 2
Output
(Output, flag)
E N, Cnd Cmnd Operand 1 Operand 2 Pst
Prohibited Prohibited
WS
ڧڧ
Column
number Column number,
character literal
CP
Applicable models
All models [Refer to Section 5.1 for details of models]
{
[Function] This command is used between SLCT and EDSL commands to execute the
subsequent commands up to the next W
command or an OTHE or EDSL
command when the comparison result of the character strings in the columns
specified in operands 1 and 2 satisfies the condition.
Comparison will be performed for the length set by a SLEN command.
If a character literal is specified in operand 2, comparison will be performed for
the entire length of the literal.
WS
EQ ............ Operand 1 = Operand 2
NE ............
Operand 1
z
Operand 2
[Example 1] SLEN 3 Set the number of comparing characters to 3.
SCPY 1 ‘ABC’ Assign ‘ABC’ to column 1.
LET 1 2 Assign 2 to variable 1.
:
SLCT Execute multi-branching.
WSEQ 1 ‘XYZ’
:
(1)
(1) will be executed if columns 1 to 3 contain ‘XYZ’.
Since columns 1 to 3 contain ‘ABC’, however, this
command will not be executed.
:
WSEQ 2 *1
:
(2)
(2) will be executed if the content of the number of
characters specified by SLEN after column 2 is the
same as the content of the column specified in
variable 1.
:
OTHE
:
(3)
This command will be executed if none of the
conditions are satisfied. In this example, since (2)
was executed, (3) will not be executed.
:
EDSL
:
(4)
The processing will move here if any of the
conditions were satisfied and the applicable
command executed. In this example, (2) and (4)
will be executed.
:
* If multiple conditions are likely to be satisfied, remember that the first W will become
valid and any subsequent commands will not be executed. Therefore, state from the
command with the most difficult condition or highest priority.