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bb-r775d-bm_tops20_ks_upd_4
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sources/fdec.bli
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%TITLE 'FDEC - format a decimal number'
MODULE FDEC ( ! Format a decimal number
IDENT = '1-005' ! File: FDEC.BLI Edit: GB1005
) =
BEGIN
!
! COPYRIGHT (c) 1981, 1985 BY
! DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
! 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.
!
!++
! FACILITY: EDT -- The DEC Standard Editor
!
! ABSTRACT:
!
! Format a decimal number.
!
! ENVIRONMENT: Runs at any access mode - AST reentrant
!
! AUTHOR: Bob Kushlis, CREATION DATE: March 18, 1979
!
! MODIFIED BY:
!
! 1-001 - Original. DJS 19-FEB-1981. This module was created by
! extracting routine EDT$$FMT_DCML from module FORMAT.
! 1-002 - Regularize headers. JBS 05-Mar-1981
! 1-003 - Rewrite to use recursion. This saves 17 words over version 1-002
! on the PDP-11. JBS 05-Mar-1981
! 1-004 - Correct infinite recursion. JBS 02-Apr-1981
! 1-005 - Make arguments to FMT_CH consistent ie right justified. GB 14-Feb-1983
!--
%SBTTL 'Declarations'
!
! TABLE OF CONTENTS:
!
REQUIRE 'EDTSRC:TRAROUNAM';
FORWARD ROUTINE
EDT$$FMT_DCML : NOVALUE;
!
! INCLUDE FILES:
!
REQUIRE 'EDTSRC:EDTREQ';
!
! MACROS:
!
! NONE
!
! EQUATED SYMBOLS:
!
! NONE
!
! OWN STORAGE:
!
! NONE
!
! EXTERNAL REFERENCES:
!
! In the routine
%SBTTL 'EDT$$FMT_DCML - format a decimal number'
GLOBAL ROUTINE EDT$$FMT_DCML ( ! Format a decimal number
N ! The number to format
) : NOVALUE =
!++
! FUNCTIONAL DESCRIPTION:
!
! Convert a decimal number to displayable ascii in the format buffer.
! The number is written with a leading minus and leading zeros suppressed.
!
! FORMAL PARAMETERS:
!
! N The number to write out.
!
! IMPLICIT INPUTS:
!
! NONE
!
! IMPLICIT OUTPUTS:
!
! NONE
!
! ROUTINE VALUE:
!
! NONE
!
! SIDE EFFECTS:
!
! Calls itself for large numbers.
!
!--
BEGIN
EXTERNAL ROUTINE
EDT$$FMT_CH : NOVALUE;
LOCAL
POSITIVE_N;
!+
! See if we should put out a minus.
!-
IF (.N LSS 0)
THEN
BEGIN
EDT$$FMT_CH (%C'-');
POSITIVE_N = -.N;
END
ELSE
POSITIVE_N = .N;
!+
! If the number is greater than or equal to 10, print
! the leading digits first.
!-
IF (.POSITIVE_N GEQ 10) THEN EDT$$FMT_DCML (.POSITIVE_N/10);
!+
! Now print the low-order (last) digit.
!-
EDT$$FMT_CH ((.POSITIVE_N MOD 10) + %C'0');
END;
END
ELUDOM