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MODULE CATB (					!ASCII to binary conversion routines
		IDENT = '001010',
		LANGUAGE (BLISS16, BLISS36) %BLISS36 (, ENTRY ($CDTB, $COTB))
		) =
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 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