Trailing-Edge
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PDP-10 Archives
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BB-4157E-BM
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fortran-test/if.for
There are 11 other files named if.for in the archive. Click here to see a list.
PROGRAM IF
! This software is furnished under a license and may only be used
! or copied in accordance with the terms of such license.
! Copyright (C) 1981 by Digital Equipment Corporation
! Version 6 IF.FOR March 81
! Basic testing of IF statement.
DOUBLE PRECISION D
LOGICAL TORF,LOG
! If statements with relationals .LT.,.LE.,.EQ.,.GE.,.GT.,
! .OR.,.AND. used.
M=3
50 IF (M.EQ.3) GOTO 60
TYPE 55
55 FORMAT(' ?Error line 50, GOTO not taken.')
60 CONTINUE
TORF=.FALSE.
I=4; X=3.3
100 IF ((I.EQ.4).AND.(X.LE.3.4)) TORF=.TRUE.
IF (TORF.NE..TRUE.) TYPE 110
110 FORMAT(' ?Error line 100. TORF=.FALSE., should = .TRUE.')
QQ=66.5; D=9.99998889999; N=1; P=3
200 IF (D.GT.6D0 .OR. N.NE.P) QQ=77.5
IF (QQ.EQ.66.5) TYPE 210
IF (QQ.NE.77.5) TYPE 220,QQ
210 FORMAT(' ?Error line 200. QQ = 66.5, should = 77.5')
220 FORMAT(' ?Error line 200. QQ = 'F', should = 77.5')
RESULT=0 !IF should fail
D=10; P=1; M=P; TORF=.FALSE.; J=-1
300 IF (D.GE.11 .OR. P.NE.M .OR.(TORF.AND.J.LT.M)) RESULT=10
IF (RESULT.NE.0) TYPE 310,RESULT
310 FORMAT(' ?Error line 300. RESULT = 'F', should = 0')
! Arithmetic IF statement
I=3; D=2
400 IF (I-(D+1)) 410,420,430
410 CONTINUE
430 CONTINUE
TYPE 435
435 FORMAT(' ?Error IF 400. Wrong branch taken')
420 CONTINUE
! Logical Two-branch IF statement
LOG=.TRUE.
500 IF (.NOT. LOG) 510,520
510 TYPE 515
515 FORMAT(' ?Error 510 branch taken, statement evaluated'
1 ' as true.')
520 CONTINUE
STOP
END