Enter your search terms Submit search form
	Web pdp-10.trailing-edge.com

MODULE CAT5 (					!Convert ASCII to RAD50
		IDENT = '001000',
		LANGUAGE (BLISS16, BLISS36) %BLISS36 (, ENTRY ($CAT5))
		) =
BEGIN
!
!                    COPYRIGHT (c) 1980, 1981, 1982
!                    DIGITAL EQUIPMENT CORPORATION
!                        Maynard, Massachusetts
!
!     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.
!

!++
! FACILITY: SYSTEM LIBRARY
!
! ABSTRACT:
!
!
!	This module contains the routine to convert 3 or less characters
!	to a RAD50 word.
!
!
! ENVIRONMENT: ANY
!
! AUTHOR: ALAN D. PECKHAM, CREATION DATE: 26-sep-78
!
! MODIFIED BY:
!
!	, : VERSION
! 01	-
!--

!
! TABLE OF CONTENTS:
!

FORWARD ROUTINE
    $CAT5;					!Convert ASCII to RAD50

!
! INCLUDE FILES:
!
!
! MACROS:
!
!
! EQUATED SYMBOLS:
!
!
! OWN STORAGE:
!
!
! EXTERNAL REFERENCES:
!

GLOBAL ROUTINE $CAT5 (BUF_PTR_ADR, FLAG) =

!++
! FUNCTIONAL DESCRIPTION:
!
!
! FORMAL PARAMETERS:
!
!	.BUF_PTR_ADR				!Address of character sequence
!						!pointer to buffer to extract
!						!number from.
!	.FLAG					!If non-zero, the period is
!						!accepted as a character.
!
! IMPLICIT INPUTS:
!
!	NONE
!
! IMPLICIT OUTPUTS:
!
!	The buffer pointer ..BUF_PTR_ADR is updated to point past
!	the characters used in the conversion.
!
! ROUTINE VALUE:
!
!	The RAD50 equivalent of the next 3 (or less) characters.
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    LOCAL
	INDEX,
	CHAR,
	VALUE;

    VALUE = 0;

    INCR INDEX FROM 0 TO 2 DO
	BEGIN
	CHAR = CH$RCHAR_A (.BUF_PTR_ADR);
	VALUE = .VALUE*%O'50' + (SELECTONE .CHAR OF
	    SET
	    [%C' '] : %O'0';
	    [%C'A' TO %C'Z'] : .CHAR - %C'A' + %O'1';
	    [%C'$'] : %O'33';
	    [%C'.'] : IF .FLAG NEQ 0 THEN %O'34' ELSE
		    BEGIN
		    .BUF_PTR_ADR = CH$PLUS (..BUF_PTR_ADR, -1);
		    0
		    END;
	    [%C'0' TO %C'9'] : .CHAR - %C'0' + %O'36';
	    [OTHERWISE] :
		BEGIN
		.BUF_PTR_ADR = CH$PLUS (..BUF_PTR_ADR, -1);
		0
		END;
	    TES);
	END;

    .VALUE
    END;					!End of $CAT5

END						!End of module

ELUDOM