
Portus	Version 2012-12-17	PDF BOOKS \| HOME UP PREV NEXT

— Tutorials —

Natural samples

The following Natural samples demonstrate the interface between Portus and the Natural programming language

NSGNATI - Portus Natural interface driver
ASGENVIN - Display natural environment
ASGECHON - Echo input
ASGCALN - Simple calculator

NSGNATI - Portus Natural interface driver

RESET #CODE (B4)       
INPUT #CODE            
CALL 'XMIDNATH' #CODE  
END

ASGENVIN - Display natural environment

DEFINE DATA PARAMETER
1 #NATENVOUT (A80)
1 #OSENVOUT (A80)
1 #TIMEOUT  (A30)
END-DEFINE
*
COMPRESS 'NATURAL' *NATVERS 'PL' *PATCH-LEVEL
         'SRVTYPE =' *SERVER-TYPE ', UI =' *UI INTO #NATENVOUT
*
COMPRESS *OS *OSVERS
         'ON' *HARDWARE INTO #OSENVOUT
*
COMPRESS *DAT4I *TIME INTO #TIMEOUT
END

ASGECHON - Echo input

DEFINE DATA PARAMETER
1 echoIn  (a30)
1 echoOut (a30)
END-DEFINE
*
MOVE echoIn to echoOut
*
END

ASGCALN - Simple calculator

DEFINE DATA
PARAMETER
  1 #OPERATION        (A1)
  1 #OPERAND-1        (I4)
  1 #OPERAND-2        (I4)
  1 #FUNCTION-RESULT  (I4)
LOCAL
  1 #WORK-RESULT      (I4)
END-DEFINE
*
  DECIDE ON FIRST VALUE OF #OPERATION
    VALUE '+'
      COMPUTE #FUNCTION-RESULT = #OPERAND-1 + #OPERAND-2
    VALUE '-'
      COMPUTE #FUNCTION-RESULT = #OPERAND-1 - #OPERAND-2
    VALUE '*'
      COMPUTE #FUNCTION-RESULT = #OPERAND-1 * #OPERAND-2
    VALUE '/'
      IF #OPERAND-2 NE 0 THEN
        COMPUTE #FUNCTION-RESULT = #OPERAND-1 / #OPERAND-2
      ELSE
        MOVE 0 TO #FUNCTION-RESULT
      END-IF
    VALUE '%'
      IF #OPERAND-2 NE 0 THEN
        DIVIDE #OPERAND-1 INTO #OPERAND-2 GIVING #WORK-RESULT
        REMAINDER #FUNCTION-RESULT
      ELSE
        MOVE 0 TO #FUNCTION-RESULT
      END-IF
     NONE VALUE
       MOVE 0 TO #FUNCTION-RESULT
   END-DECIDE
*
END

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