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MODULE CATB (					!ASCII to binary conversion routines
		IDENT = '001010',
		LANGUAGE (BLISS16, BLISS36) %BLISS36 (, ENTRY ($CDTB, $COTB))
		) =
BEGIN
!
!
!
! COPYRIGHT (C) 1978 BY
! DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
!
!
! 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 ROUTINES TO CONVERT DECIMAL OR OCTAL ASCII
! TO BINARY.
!
!
! ENVIRONMENT: ANY
!
! AUTHOR: ALAN D. PECKHAM, CREATION DATE: 28-AUG-78
!
! MODIFIED BY:
!
!	, : VERSION
! 01	-
!--

!
! TABLE OF CONTENTS:
!

FORWARD ROUTINE
    $CDTB,					!Convert decimal ASCII to binary.
    $COTB,					!Convert octal ASCII to binary.
    COTB;					!ASCII to binary common routine

!
! INCLUDE FILES
!
!	NONE
!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	NONE
!

GLOBAL ROUTINE $CDTB (BUF_PTR_ADR) =

!++
! FUNCTIONAL DESCRIPTION:
!
!
!
!
! FORMAL PARAMETERS:
!
!	.BUF_PTR_ADR				!Address of character sequence
!						!pointer to buffer to extract
!						!number from.
!
! 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 binary equivalent of the decimal number.
!
! SIDE EFFECTS
!
!	NONE
!
!--

    BEGIN

    LITERAL
	RADIX = 10;				!Use a radix of 10.

    COTB (.BUF_PTR_ADR, RADIX)			!Convert the number.
    END;					!OF $CDTB

GLOBAL ROUTINE $COTB (BUF_PTR_ADR) =

!++
! FUNCTIONAL DESCRIPTION:
!
!
!
!
! FORMAL PARAMETERS:
!
!	.BUF_PTR_ADR				!Address of character sequence
!						!pointer to buffer to extract
!						!number from.
!
! 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 binary equivalent of the octal number.
!
! SIDE EFFECTS
!
!	NONE
!
!--

    BEGIN

    LITERAL
	RADIX = 10;				!Use a radix of 10.

    COTB (.BUF_PTR_ADR, RADIX)			!Convert the number.
    END;					!OF $COTB

ROUTINE COTB (BUF_PTR_ADR, RADIX) =

!++
! FUNCTIONAL DESCRIPTION:
!
!
!
!
! FORMAL PARAMETERS:
!
!	.BUF_PTR_ADR				!Address of character sequence
!						!pointer to buffer to extract
!						!number from.
!	RADIX					!Radix for conversion
!
! 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 binary equivalent of the number in the specified radix.
!
! SIDE EFFECTS
!
!	NONE
!
!--

    BEGIN

    LOCAL
	BUF_PTR,
	DIGIT,					!NEXT digit FROM STRING
	VALUE;					!RESULTING VALUE EXTRACTED

    BUF_PTR = ..BUF_PTR_ADR;
    VALUE = 0;

    WHILE (DIGIT = CH$RCHAR_A (BUF_PTR) - %C'0') GEQ 0 AND .DIGIT LSS .RADIX DO
	VALUE = (.VALUE*.RADIX) + .DIGIT;

    .BUF_PTR_ADR = CH$PLUS (.BUF_PTR, -1);
    .VALUE
    END;					!OF COTB
END

ELUDOM