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5a117d542a
NOTE: The `log2(x [,eps])` and `logn(x, n [,eps])` builtin functions are NOT yet implemented.
58 lines
1.6 KiB
Plaintext
58 lines
1.6 KiB
Plaintext
NAME
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ilog - floor of logarithm to specified integer base
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ilogn - floor of logarithm to specified integer base
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SYNOPSIS
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ilog(x, b)
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ilogn(x, b)
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TYPES
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x nonzero real
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b integer greater than 1
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return integer
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DESCRIPTION
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Returns the greatest integer n for which b^n <= abs(x).
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The ilogn function is an alias for ilog.
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EXAMPLE
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; print ilog(2, 3), ilog(8, 3), ilog(8.9, 3), ilog(1/8, 3)
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0 1 1 -2
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; print ilogn(2, 3), ilogn(8, 3), ilogn(8.9, 3), ilogn(1/8, 3)
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0 1 1 -2
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LIMITS
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x > 0
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b > 1
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LINK LIBRARY
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long zlog(ZVALUE x, ZVALUE b)
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SEE ALSO
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ilog10, ilog2, ln, log, log2, logn
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## Copyright (C) 1999,2023 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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## as published by the Free Software Foundation.
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##
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## Calc is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## Public License for more details.
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##
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## A copy of version 2.1 of the GNU Lesser General Public License is
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## distributed with calc under the filename COPYING-LGPL. You should have
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##
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## Under source code control: 1995/10/25 04:03:45
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## File existed as early as: 1995
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##
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## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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