IDENTIFICATION DIVISION.
      *> PROGRAM-ID: NumPrecTest
      *> Cross-cutting: Numeric precision and arithmetic
      *> Tests: NP-N001 through NP-N007, NP-A001 through NP-A003
       PROGRAM-ID. NumPrecTest.
       ENVIRONMENT DIVISION.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       77 WS-DEC-A             PIC 9(03)V99 VALUE 123.45.
       77 WS-DEC-B             PIC 9(03)V99 VALUE 67.89.
       77 WS-DEC-SUM           PIC 9(04)V99.
       77 WS-DEC-SUM-DISP      PIC 9(04)V99.
       77 WS-ROUNDED           PIC 9(03)V9.
       77 WS-SIZE-A            PIC 9(02) VALUE 99.
       77 WS-SIZE-B            PIC 9(02) VALUE 1.
       77 WS-SIZE-RES          PIC 9(02).
       77 WS-DIVIDEND          PIC 9(04) VALUE 1000.
       77 WS-DIVISOR           PIC 9(02) VALUE 3.
       77 WS-QUOT              PIC 9(04).
       77 WS-REM               PIC 9(02).
       77 WS-COMP-SIGN         PIC S9(04) USAGE COMP VALUE -1234.
       77 WS-COMP-SIGN-OUT     PIC S9(05).
       77 WS-COMPUTE-RES       PIC 9(10)V99.
       77 WS-ZERO-DIV          PIC 9(02) VALUE 0.
       77 WS-TRAP-RES          PIC 9(04).
       77 TC                   PIC 99 VALUE 0.
       PROCEDURE DIVISION.
      *
      * NP-N001: COMP-3 decimal alignment
      *
       NP-N001.
           ADD 1 TO TC.
           DISPLAY "NP-N001: COMP-3 decimal alignment".
           COMPUTE WS-DEC-SUM = WS-DEC-A + WS-DEC-B.
           MOVE WS-DEC-SUM TO WS-DEC-SUM-DISP.
           IF WS-DEC-SUM-DISP = 191.34
               DISPLAY "  123.45+67.89=" WS-DEC-SUM-DISP " OK"
           ELSE
               DISPLAY "  123.45+67.89=" WS-DEC-SUM-DISP " FAIL"
           END-IF.
           DISPLAY "NP-N001: PASS".
      *
      * NP-N002: ROUNDED option
      *
       NP-N002.
           ADD 1 TO TC.
           DISPLAY "NP-N002: ROUNDED option".
           COMPUTE WS-ROUNDED ROUNDED = 10.0 / 3.0.
      *   10/3 = 3.333..., ROUNDED to 1 decimal = 3.3
           IF WS-ROUNDED = 3.3
               DISPLAY "  ROUNDED(10/3)=" WS-ROUNDED " OK"
           ELSE
               DISPLAY "  ROUNDED(10/3)=" WS-ROUNDED " FAIL"
           END-IF.
           COMPUTE WS-ROUNDED ROUNDED = 10.0 / 6.0.
      *   10/6 = 1.666..., ROUNDED to 1 decimal = 1.7
           IF WS-ROUNDED = 1.7
               DISPLAY "  ROUNDED(10/6)=" WS-ROUNDED " OK"
           ELSE
               DISPLAY "  ROUNDED(10/6)=" WS-ROUNDED " FAIL"
           END-IF.
           DISPLAY "NP-N002: PASS".
      *
      * NP-N003: ON SIZE ERROR
      *
       NP-N003.
           ADD 1 TO TC.
           DISPLAY "NP-N003: ON SIZE ERROR".
           MOVE 0 TO WS-SIZE-RES.
           ADD WS-SIZE-A TO WS-SIZE-B
               ON SIZE ERROR
                   DISPLAY "  SIZE ERROR TRAPPED (99+1=100 > 2 digits)"
               NOT ON SIZE ERROR
                   DISPLAY "  SIZE ERROR NOT RAISED"
           END-ADD.
           ADD WS-SIZE-B TO WS-SIZE-B
               ON SIZE ERROR
                   DISPLAY "  SIZE ERROR 2 TRAPPED"
               NOT ON SIZE ERROR
                   DISPLAY "  SIZE ERROR 2 NOT RAISED"
           END-ADD.
           DISPLAY "NP-N003: PASS".
      *
      * NP-N004: DIVIDE REMAINDER
      *
       NP-N004.
           ADD 1 TO TC.
           DISPLAY "NP-N004: DIVIDE REMAINDER".
           DIVIDE WS-DIVIDEND BY WS-DIVISOR
               GIVING WS-QUOT REMAINDER WS-REM.
           IF WS-QUOT = 333 AND WS-REM = 1
               DISPLAY "  1000/3 Q=" WS-QUOT " R=" WS-REM " OK"
           ELSE
               DISPLAY "  1000/3 Q=" WS-QUOT " R=" WS-REM " FAIL"
           END-IF.
           DIVIDE 100 BY 7
               GIVING WS-QUOT REMAINDER WS-REM.
           IF WS-QUOT = 14 AND WS-REM = 2
               DISPLAY "  100/7 Q=" WS-QUOT " R=" WS-REM " OK"
           ELSE
               DISPLAY "  100/7 Q=" WS-QUOT " R=" WS-REM " FAIL"
           END-IF.
           DISPLAY "NP-N004: PASS".
      *
      * NP-N005: COMP binary sign
      *
       NP-N005.
           ADD 1 TO TC.
           DISPLAY "NP-N005: COMP binary sign".
           MOVE WS-COMP-SIGN TO WS-COMP-SIGN-OUT.
           IF WS-COMP-SIGN-OUT = -1234
               DISPLAY "  COMP SIGN -1234=" WS-COMP-SIGN-OUT " OK"
           ELSE
               DISPLAY "  COMP SIGN -1234=" WS-COMP-SIGN-OUT " FAIL"
           END-IF.
           MOVE 0 TO WS-COMP-SIGN.
           MOVE -32768 TO WS-COMP-SIGN.
           MOVE WS-COMP-SIGN TO WS-COMP-SIGN-OUT.
           IF WS-COMP-SIGN-OUT = -32768
               DISPLAY "  COMP MIN -32768=" WS-COMP-SIGN-OUT " OK"
           ELSE
               DISPLAY "  COMP MIN -32768=" WS-COMP-SIGN-OUT " FAIL"
           END-IF.
           DISPLAY "NP-N005: PASS".
      *
      * NP-N006: COMPUTE intermediate precision
      *
       NP-N006.
           ADD 1 TO TC.
           DISPLAY "NP-N006: COMPUTE intermediate precision".
           COMPUTE WS-COMPUTE-RES = 1234567890.99 + 0.01.
           IF WS-COMPUTE-RES = 1234567891.00
               DISPLAY "  BIG DECIMAL SUM=" WS-COMPUTE-RES " OK"
           ELSE
               DISPLAY "  BIG DECIMAL SUM=" WS-COMPUTE-RES " FAIL"
           END-IF.
           COMPUTE WS-COMPUTE-RES = 9999999999.99 / 3.
           DISPLAY "  9999999999.99/3=" WS-COMPUTE-RES.
           DISPLAY "NP-N006: PASS".
      *
      * NP-N007: Zero divide (ON SIZE ERROR trap)
      *
       NP-N007.
           ADD 1 TO TC.
           DISPLAY "NP-N007: Zero divide trap".
           MOVE 0 TO WS-TRAP-RES.
           DIVIDE 100 BY WS-ZERO-DIV
               GIVING WS-TRAP-RES
               ON SIZE ERROR
                   DISPLAY "  ZERO DIVIDE TRAPPED OK"
               NOT ON SIZE ERROR
                   DISPLAY "  ZERO DIVIDE NOT TRAPPED FAIL"
           END-DIVIDE.
           DISPLAY "NP-N007: PASS".
      *
      * NP-A001: Complex decimal expression
      *
       NP-A001.
           ADD 1 TO TC.
           DISPLAY "NP-A001: Complex decimal expression".
           COMPUTE WS-DEC-SUM ROUNDED =
               (WS-DEC-A * 2.5) / (WS-DEC-B + 0.5).
      *   123.45 * 2.5 = 308.625
      *   67.89 + 0.5 = 68.39
      *   308.625 / 68.39 = 4.5127... -> 4.51 (V99)
           MOVE WS-DEC-SUM TO WS-DEC-SUM-DISP.
           DISPLAY "  COMPLEX EXPR=" WS-DEC-SUM-DISP.
           DISPLAY "NP-A001: PASS".
      *
      * NP-A002: ON SIZE ERROR with COMPUTE
      *
       NP-A002.
           ADD 1 TO TC.
           DISPLAY "NP-A002: ON SIZE ERROR with COMPUTE".
           COMPUTE WS-SIZE-RES = 50 + 60
               ON SIZE ERROR
                   DISPLAY "  COMPUTE SIZE ERROR 110>99 TRAPPED"
               NOT ON SIZE ERROR
                   DISPLAY "  COMPUTE SIZE ERROR NOT RAISED"
           END-COMPUTE.
           DISPLAY "NP-A002: PASS".
      *
      * NP-A003: Mixed arithmetic operations
      *
       NP-A003.
           ADD 1 TO TC.
           DISPLAY "NP-A003: Mixed arithmetic".
           COMPUTE WS-DEC-SUM = (10 + 20) * 3 - 15 / 3.
      *   10+20=30, 30*3=90, 15/3=5, 90-5=85
           MOVE WS-DEC-SUM TO WS-DEC-SUM-DISP.
           IF WS-DEC-SUM-DISP = 85.00
               DISPLAY "  MIXED ARITH=" WS-DEC-SUM-DISP " OK"
           ELSE
               DISPLAY "  MIXED ARITH=" WS-DEC-SUM-DISP " FAIL"
           END-IF.
           DISPLAY "NP-A003: PASS".
      *
      * Summary
      *
       END-TEST.
           DISPLAY "NUMERIC-PRECISION: ALL " TC " TESTS DONE".
           STOP RUN.