2 digits - return number of "decimal" digits in an integral part
9 b integer >= 2, defaults to 10
14 Returns number of digits in the standard base-b representation
15 when x is truncated to an integer and the sign is ignored.
17 To be more precise: when abs(int(x)) > 0, this function returns
18 the value 1 + ilog(x, b). When abs(int(x)) == 0, then this
19 function returns the value 1.
21 If omitted, b is assumed to be 10. If given, b must be an
24 One should remember these special cases:
26 digits(12.3456) == 2 computes with the integer part only
27 digits(-1234) == 4 computes with the absolute value only
28 digits(0) == 1 specical case
29 digits(-0.123) == 1 combination of all of the above
32 ; print digits(100), digits(23209), digits(2^72)
35 ; print digits(0), digits(1), digits(-1)
38 ; print digits(-1234), digits(12.3456), digits(107.207)
41 ; print digits(17^463-1, 17), digits(10000, 100), digits(21701, 2)
48 long qdigits(NUMBER *q, ZVALUE base)
53 ## Copyright (C) 1999-2003 Landon Curt Noll
55 ## Calc is open software; you can redistribute it and/or modify it under
56 ## the terms of the version 2.1 of the GNU Lesser General Public License
57 ## as published by the Free Software Foundation.
59 ## Calc is distributed in the hope that it will be useful, but WITHOUT
60 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
61 ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
62 ## Public License for more details.
64 ## A copy of version 2.1 of the GNU Lesser General Public License is
65 ## distributed with calc under the filename COPYING-LGPL. You should have
66 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
67 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
69 ## @(#) $Revision: 30.1 $
70 ## @(#) $Id: digits,v 30.1 2007/03/16 11:10:42 chongo Exp $
71 ## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/digits,v $
73 ## Under source code control: 1995/10/03 10:40:01
74 ## File existed as early as: 1995
76 ## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
77 ## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/