/usr/share/calc/help/max is in apcalc-common 2.12.4.4-3.
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max - maximum, or maximum of defined maxima
SYNOPSIS
max(x_1, x_2, ...)
TYPES
x_1, x_2, ... any
return any
DESCRIPTION
If an argument x_i is a list with elements e_1, e_2, ..., e_n, it
is treated as if x_i were replaced by e_1, e_2, ..., e_n; this may
continue recurively if any of the e_j is a list.
If an argument x_i is an object of type xx, then x_i is replaced by
xx_max(x_i) if the function xx_max() has been defined. If the
type xx has been defined by:
obj xx = {x, y, z},
an appropriate definition of xx_max(a) is sometimes max(a.x, a.y, a.z).
max(a) then returns the maximum of the elements of a.
If x_i has the null value, it is ignored. Thus, sum(a, , b, , c)
If x_i has the null value, it is ignored. Thus, max(a, , b, , c)
will return the same as max(a, b, c).
Assuming the above replacements, and that the x_1, x_2, ..., are
of sufficently simple ordered types (e.g. real numbers or strings),
or, if some are objects, the relevant xx_rel(a,b) has been defined
and returns a real-number value for any comparison that has to be made,
max(x_1, x_2, ...) returns the value determined by max(x_1) = x_1,
and succesively for later arguments, by the use of the equivalent of
max(a,b) = (a < b) ? b : a. If the ordering determined by < is total,
max(x_1, ...) will be the maximum value among the arguments. For a
preorder relation it may be one of several maximal values. For
other relations, it may be difficult to predict the result.
EXAMPLE
; print max(2), max(5, 3, 7, 2, 9), max(3.2, -0.5, 8.7, -1.2, 2.5)
2 9 8.7
; print max(list(3,5), 7, list(6, list(7,8), 2))
8
; print max("one", "two", "three", "four")
two
; obj point {x, y}
; define point_rel(a,b) = sgn(a.x - b.x)
; obj point A = {1, 5}
; obj point B = {1, 4}
; obj point C = {3, 3}
; print max(A, B, C)
obj point {3, 3}
; define point_max(a) = a.x
; print max(A, B, C)
3
LIMITS
The number of arguments is not to exceed 1024.
LINK LIBRARY
NUMBER *qmax(NUMBER *x1, NUMBER *x2)
SEE ALSO
max, obj
## Copyright (C) 1999-2006 Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL. You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## @(#) $Revision: 30.1 $
## @(#) $Id: max,v 30.1 2007/03/16 11:10:42 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/max,v $
##
## Under source code control: 1995/10/05 04:52:27
## File existed as early as: 1995
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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