Trailing-Edge
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PDP-10 Archives
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bb-4157j-bm_fortran20_v11_16mt9
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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
!COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATION 1981, 1987
!ALL RIGHTS RESERVED.
!
!THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND COPIED
!ONLY IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH THE
!INCLUSION OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE OR ANY OTHER
!COPIES THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
!OTHER PERSON. NO TITLE TO AND OWNERSHIP OF THE SOFTWARE IS HEREBY
!TRANSFERRED.
!
!THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE
!AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT
!CORPORATION.
!
!DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS
!SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.
! Version 7 IF.FOR
! 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