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function I = irand (imin, imax, m, n)
%IRAND construct a random integer matrix
%
% return a random m-by-n matrix of integers (uint64)
% in the range imin:imax, inclusive
%
% I = irand (imin, imax, m, n)
%
% if imin > imax, the ranges are swapped.
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0
if (nargin < 4)
n = 1 ;
end
if (nargin < 3)
m = 1 ;
end
if (imin > imax)
t = imin ;
imin = imax ;
imax = t ;
end
if (imin == imax)
I = uint64 (imin) * ones (m, n, 'uint64') ;
else
x = rand (m,n) ;
I = uint64 (floor ((imax-imin+1) * x) + imin) ;
end
assert (min (min (I)) >= imin) ;
assert (max (max (I)) <= imax) ;
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