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23 lines
692 B
JavaScript
23 lines
692 B
JavaScript
var assert = require('assert'),
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approx = require('../../../../tools/approx'),
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math = require('../../../../index');
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var cs_lu = math.import(require('../../../../lib/function/algebra/sparse/cs_lu'));
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describe('cs_lu', function () {
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it('should decompose matrix, 2 x 2, no symbolic ordering, array', function () {
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var m = math.sparse([[2, 1], [1, 4]]);
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var r = cs_lu(m, null, 1);
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// L
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assert.deepEqual(r.L.valueOf(), [[1, 0], [0.5, 1]]);
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// U
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assert.deepEqual(r.U.valueOf(), [[2, 1], [0, 3.5]]);
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// P
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assert.deepEqual(r.P.valueOf(), [[1, 0], [0, 1]]);
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// verify
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approx.deepEqual(math.multiply(r.P, m), math.multiply(r.L, r.U));
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});
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}); |