/usr/share/octave/site/m/vlfeat/toolbox/xtest/vl_test_binsearch.m is in octave-vlfeat 0.9.17+dfsg0-6+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 39 | function results = vl_test_binsearch(varargin)
% VL_TEST_BINSEARCH
vl_test_init ;
function test_inf_bins()
x = [-inf -1 0 1 +inf] ;
vl_assert_equal(vl_binsearch([], x), [0 0 0 0 0]) ;
vl_assert_equal(vl_binsearch([-inf 0], x), [1 1 2 2 2]) ;
vl_assert_equal(vl_binsearch([-inf], x), [1 1 1 1 1]) ;
vl_assert_equal(vl_binsearch([-inf +inf], x), [1 1 1 1 2]) ;
function test_empty()
vl_assert_equal(vl_binsearch([], []), []) ;
function test_bnd()
vl_assert_equal(vl_binsearch([], [1]), [0]) ;
vl_assert_equal(vl_binsearch([], [-inf]), [0]) ;
vl_assert_equal(vl_binsearch([], [+inf]), [0]) ;
vl_assert_equal(vl_binsearch([1], [.9]), [0]) ;
vl_assert_equal(vl_binsearch([1], [1]), [1]) ;
vl_assert_equal(vl_binsearch([1], [-inf]), [0]) ;
vl_assert_equal(vl_binsearch([1], [+inf]), [1]) ;
function test_basic()
vl_assert_equal(vl_binsearch(-10:10, -10:10), 1:21) ;
vl_assert_equal(vl_binsearch(-10:10, -11:10), 0:21) ;
vl_assert_equal(vl_binsearch(-10:10, [-inf, -11:10, +inf]), [0 0:21 21]) ;
function test_frac()
vl_assert_equal(vl_binsearch(1:10, 1:.5:10), floor(1:.5:10))
vl_assert_equal(vl_binsearch(1:10, fliplr(1:.5:10)), ...
fliplr(floor(1:.5:10))) ;
function test_array()
a = reshape(1:100,10,10) ;
b = reshape(1:.5:100.5, 2, []) ;
c = floor(b) ;
vl_assert_equal(vl_binsearch(a,b), c) ;
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