/usr/share/freemat/toolbox/numerical/rem.m is in freemat-data 4.0-5.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | % REM REM Remainder After Division
%
% Usage
%
% Computes the remainder after division of an array. The syntax for its use is
%
% y = rem(x,n)
%
% where x is matrix, and n is the base of the modulus. The
% effect of the rem operator is to add or subtract multiples of n
% to the vector x so that each element x_i is between 0 and n
% (strictly). Note that n does not have to be an integer. Also,
% n can either be a scalar (same base for all elements of x), or a
% vector (different base for each element of x).
%
% Note that the following are defined behaviors:
% 1. rem(x,0) = nan@
%
% 2. rem(x,x) = 0@ for nonzero x
%
% 3. rem(x,n)@ has the same sign as x for all other cases.
%
% Note that rem and mod return the same value if x and n
% are of the same sign. But differ by n if x and y have
% different signs.
% Copyright (c) 2002-2007 Samit Basu
% Licensed under the GPL
function y = rem(x,n)
if (isscalar(x))
x = repmat(x,size(n));
end
if (isscalar(n))
n = repmat(n,size(x));
end
m = fix(x./n);
y = x - m.*n;
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