[MATH-1558] Fix MidPointIntegrator incremental implementation #161
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sritchie
commented
Oct 20, 2020
| @@ -48,8 +67,9 @@ public void testLowAccuracy() { | |||
| double expected = -3697001.0 / 48.0; | |||
| double tolerance = FastMath.abs(expected * integrator.getRelativeAccuracy()); | |||
| double result = integrator.integrate(Integer.MAX_VALUE, f, min, max); | |||
| Assert.assertTrue(integrator.getEvaluations() < Integer.MAX_VALUE / 2); | |||
| Assert.assertTrue(integrator.getEvaluations() < Integer.MAX_VALUE / 3); | |||
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This test might be redundant now that we know exactly how many evaluations we should have, as a function of iterations.
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This PR implements the fix described in https://issues.apache.org/jira/browse/MATH-1558, and fixes the implementation of the "stage" method in MidPointIntegrator.