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	PROGRAM RANDOM

! 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	RANDOM.FOR	March 81

!	Basic RANDOM I/O test.

	DOUBLE PRECISION D,DD

!	Data to be written out.

	I=1234; X=456.789; D=123456789.0123

!	Default OPEN statement (BINARY mode).

	OPEN(20,ACCESS='RANDOM',RECORD SIZE=50)
100	WRITE(20'2) I
	WRITE(20'1) X
	WRITE(20'3) D
	CLOSE(20)

	OPEN(20,ACCESS='RANDOM',RECORD SIZE=50)
	READ(20'3) DD			!Read back in
	READ(20'2) II
	READ(20'1) XX

	IF (I.NE.II) TYPE 110,I,II	!Check results
	IF (X.NE.XX) TYPE 120,X,XX
	IF (D.NE.DD) TYPE 130,D,DD

110	FORMAT(' ?Error line 100.  RANDOM I/O.',/
	1	'  I='I' II='I)
120	FORMAT(' ?Error line 100.  RANDOM I/O.',/
	1	'  X='F' XX='F)
130	FORMAT(' ?Error line 100.  RANDOM I/O.',/
	1	'  D='D' DD='D)
	CLOSE(20)

!	RANDOM ASCII I/O

	OPEN(22,MODE='ASCII',ACCESS='RANDOM',RECORD SIZE=40)
200	WRITE(22'3,205) D
	WRITE(22'1,206) I
	WRITE(22'2,207) X
	CLOSE(22)

	OPEN(22,MODE='ASCII',ACCESS='RANDOM',RECORD SIZE=40)
	READ(22'2,207) XX		!Read back in
	READ(22'3,205) DD
	READ(22'1,206) II
205	FORMAT(D)
206	FORMAT(I)
207	FORMAT(F)

	IF (I.NE.II) TYPE 210,I,II	!Check results
	IF (X.NE.XX) TYPE 220,X,XX
	IF (D.NE.DD) TYPE 230,D,DD

210	FORMAT(' ?Error line 200.  RANDOM I/O.',/
	1	'  I='I' II='I)
220	FORMAT(' ?Error line 200.  RANDOM I/O.',/
	1	'  X='F' XX='F)
230	FORMAT(' ?Error line 200.  RANDOM I/O.',/
	1	'  D='D' DD='D)
	CLOSE(22)

!	Image Random I/O.

	OPEN(23,MODE='IMAGE',ACCESS='RANDOM',RECORD SIZE=50)
300	WRITE(23'2) I
	WRITE(23'1) X
	WRITE(23'3) D
	CLOSE(23)

	OPEN(23,MODE='IMAGE',ACCESS='RANDOM',RECORD SIZE=50)
	READ(23'3) DD			!Read back in
	READ(23'2) II
	READ(23'1) XX

	IF (I.NE.II) TYPE 310,I,II	!Check results
	IF (X.NE.XX) TYPE 320,X,XX
	IF (D.NE.DD) TYPE 330,D,DD

310	FORMAT(' ?Error line 300.  Image RANDOM I/O.',/
	1	'  I='I' II='I)
320	FORMAT(' ?Error line 300.  Image RANDOM I/O.',/
	1	'  X='F' XX='F)
330	FORMAT(' ?Error line 300.  Image RANDOM I/O.',/
	1	'  D='D' DD='D)
	CLOSE(23)

	STOP
	END