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Release calc version 2.11.7
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Landon Curt Noll
39
help/digits
39
help/digits
@@ -11,23 +11,38 @@ TYPES
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return integer
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DESCRIPTION
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Returns the least non-negative integer n for which abs(x) < b^n.
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Returns number of digits in the standard base-b representation
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when x is truncated to an integer and the sign is ignored.
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digits(x, b) = 0 if and only if abs(x) <= 1.
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To be more precise: when abs(int(x)) > 0, this function returns
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the value 1 + ilog(x, b). When abs(int(x)) == 0, then this
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function returns the value 1.
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For real x with absolute value > 1, digits(x, b) is the number
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of digits in the standard base-b "decimal" representation of int(abs(x));
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this is also given by 1 + ilog(x, b).
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If omitted, b is assumed to be 10. If given, b must be an
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integer > 1.
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NOTE: both digits(0) and digits(1) return the value of 1.
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This is not a bug, it is a feature of the above equation. :-)
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One should remember these special cases:
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digits(12.3456) == 2 computes with the integer part only
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digits(-1234) == 4 computes with the absolute value only
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digits(0) == 1 specical case
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digits(-0.123) == 1 combination of all of the above
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EXAMPLE
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> print digits(0), digits(0.0123), digits(3.7), digits(-27), digits(-99.7)
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0 0 1 2 2
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> print digits(100), digits(23209), digits(2^72)
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3 5 22
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> print digits(0), digits(1), digits(-1)
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1 1 1
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> print digits(-1234), digits(12.3456), digits(107.207)
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4 2 3
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> print digits(17^463-1, 17), digits(10000, 100), digits(21701, 2)
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3, 15 14
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LIMITS
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none
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b > 1
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LINK LIBRARY
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long qdigits(NUMBER *q, ZVALUE base)
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@@ -51,8 +66,8 @@ SEE ALSO
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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##
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## @(#) $Revision: 29.4 $
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## @(#) $Id: digits,v 29.4 2003/01/14 04:09:35 chongo Exp $
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## @(#) $Revision: 29.5 $
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## @(#) $Id: digits,v 29.5 2003/01/26 19:41:35 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/digits,v $
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##
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## Under source code control: 1995/10/03 10:40:01
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11
help/places
11
help/places
@@ -16,6 +16,9 @@ DESCRIPTION
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places(x,b) = 0 if and only if x is an integer.
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If omitted, b is assumed to be 10. If given, b must be an
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integer > 1.
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places(x,b) = n > 0 if and only if the fractional part of abs(x)
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has a finite base-b "decimal" representation with n digits of which
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the last digit is nonzero. This occurs if and only if every prime
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@@ -29,7 +32,7 @@ EXAMPLE
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-1 3 1
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LIMITS
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none
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b > 1
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LINK LIBRARY
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long qplaces(NUMBER *q, ZVALUE base)
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@@ -37,7 +40,7 @@ LINK LIBRARY
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SEE ALSO
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digit, digits
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## Copyright (C) 1999 Landon Curt Noll
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## Copyright (C) 1999-2003 Landon Curt Noll
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##
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## Calc is open software; you can redistribute it and/or modify it under
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## the terms of the version 2.1 of the GNU Lesser General Public License
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@@ -53,8 +56,8 @@ SEE ALSO
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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##
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## @(#) $Revision: 29.4 $
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## @(#) $Id: places,v 29.4 2000/12/17 12:27:58 chongo Exp $
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## @(#) $Revision: 29.5 $
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## @(#) $Id: places,v 29.5 2003/01/26 19:43:45 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/places,v $
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##
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## Under source code control: 1995/10/03 10:40:02
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12
help/todo
12
help/todo
@@ -66,6 +66,8 @@ Very High priority items:
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setting $LANG would allow calc to produce error messages
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and text strings in that language.
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* Consider using GNU autoconf / configure to build the calc Makefile.
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=-=
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High priority items:
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@@ -83,8 +85,6 @@ High priority items:
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* Perform a code coverage analysis of the 'make check' action
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and improve the coverage (within reason) of the regress.cal suite.
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* Create a Linux rpm (Red Hat Package Manager) package for calc.
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* Address, if possible and reasonable, any Calc Mis-features
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as noted in the BUGS file or as displayed by 'calc help bugs'.
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@@ -122,9 +122,7 @@ Medium priority items:
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* Add a builtin function to access the 64 bit FNV hash which
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is currently being used internally in seed.c.
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* Consider using configure to build the calc Makefile.
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## Copyright (C) 1999 Landon Curt Noll
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## Copyright (C) 1999-2003 Landon Curt Noll
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##
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## Calc is open software; you can redistribute it and/or modify it under
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## the terms of the version 2.1 of the GNU Lesser General Public License
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@@ -140,8 +138,8 @@ Medium priority items:
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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##
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## @(#) $Revision: 29.4 $
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## @(#) $Id: todo,v 29.4 2002/07/10 17:30:28 chongo Exp $
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## @(#) $Revision: 29.5 $
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## @(#) $Id: todo,v 29.5 2003/02/25 20:26:17 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/todo,v $
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##
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## Under source code control: 1999/10/20 07:42:55
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