Test result different on pipeline and locally

[Serrof]

testGaussian in FiniteDifferencesDifferentiatorTest pases in the pipeline (which is Java 11) but not locally for me.
I'm running it on Windows, with JDK 8.

org.opentest4j.AssertionFailedError:
Expected :2.385E-13
Actual :2.47723716539916E-13

It seems that the scope goes well beyond that single test and does indeed come from the difference in JDK

[afossa]

For me this test fails with Java 11.

I'm on macOS aarch64 with JDK Temurin 11.0.28+6, and I have 26 failures in Hipparchus core only:

[INFO] Results:
[INFO]
[ERROR] Failures:
[ERROR]   DerivativeStructureTest.testExpm1Definition:881 expected: <0.0> but was: <-4.440892098500626E-16>
[ERROR]   DerivativeStructureTest.testLogExp:948 expected: <0.0> but was: <2.220446049250313E-16>
[ERROR]   DerivativeStructureTest.testPowDoubleDS:277->checkEquals:2152 expected: <10.949762137696668> but was: <10.94976213769667>
[ERROR]   DerivativeStructureTest.testPowReciprocalPow:716 expected: <0.0> but was: <3.0039840068565955E-10>
[ERROR]   DerivativeStructureTest.testSqrtDefinition:583 expected: <0.0> but was: <7.105427357601002E-14>
[ERROR]   FieldDerivativeStructureBinary64Test>FieldDerivativeStructureAbstractTest.testExpm1Definition:969 expected: <0.0> but was: <-4.440892098500626E-16>
[ERROR]   FieldDerivativeStructureBinary64Test>FieldDerivativeStructureAbstractTest.testLogExp:1036 expected: <0.0> but was: <2.220446049250313E-16>
[ERROR]   FieldDerivativeStructureBinary64Test>FieldDerivativeStructureAbstractTest.testPowReciprocalPow:771 expected: <0.0> but was: <3.0039840068565955E-10>
[ERROR]   FieldDerivativeStructureBinary64Test>FieldDerivativeStructureAbstractTest.testSqrtDefinition:631 expected: <0.0> but was: <7.105427357601002E-14>
[ERROR]   FieldDerivativeStructureComplexTest>FieldDerivativeStructureAbstractTest.testExpm1Definition:969 expected: <0.0> but was: <-4.440892098500626E-16>
[ERROR]   FieldDerivativeStructureComplexTest>FieldDerivativeStructureAbstractTest.testLogExp:1036 expected: <0.0> but was: <2.220446049250313E-16>
[ERROR]   FieldDerivativeStructureComplexTest>FieldDerivativeStructureAbstractTest.testPowReciprocalPow:771 expected: <0.0> but was: <3.0039840068565955E-10>
[ERROR]   FieldDerivativeStructureComplexTest>FieldDerivativeStructureAbstractTest.testSqrtDefinition:631 expected: <0.0> but was: <7.105427357601002E-14>
[ERROR]   FieldDerivativeStructureDfpTest>FieldDerivativeStructureAbstractTest.testLog:983 expected: <-2.282782465697866> but was: <-2.2827824656978657>
[ERROR]   FiniteDifferencesDifferentiatorTest.testGaussian:135 expected: <1.284E-15> but was: <1.2698175844150228E-15>
[ERROR]   SigmoidTest.testDerivativesHighOrder:62 expected: <0.3557888812936114> but was: <0.3557888812936113>
[ERROR]   GammaDistributionTest.testMath753Shape1:338->doTestMath753:306 shape = 1.0, scale = 1.0
Old implementation
------------------
org.hipparchus.UnitTestUtils$SimpleStatistics@421bcbadNew implementation
------------------
org.hipparchus.UnitTestUtils$SimpleStatistics@5a6ebd39 ==> expected: <true> but was: <false>
[ERROR]   GammaDistributionTest.testMath753Shape100:353->doTestMath753:305 shape = 100.0, scale = 1.0
Old implementation
------------------
org.hipparchus.UnitTestUtils$SimpleStatistics@13b2e10cNew implementation
------------------
org.hipparchus.UnitTestUtils$SimpleStatistics@fd6a8ec ==> expected: <true> but was: <false>
[ERROR]   MultivariateNormalMixtureModelDistributionTest.testSampling:146 expected: <-2.5296544304801847> but was: <-2.529654430480185>
[ERROR]   FastMathTest.testCosAccuracy:884 cos() had errors in excess of 0.51 ULP ==> expected: <true> but was: <false>
[ERROR]   FastMathTest.testExpAccuracy:770 exp() had errors in excess of 0.51 ULP ==> expected: <true> but was: <false>
[ERROR]   FastMathTest.testExpSpecialCases:411 exp(1) should be Math.E ==> expected: <2.718281828459045> but was: <2.7182818284590455>
[ERROR]   FastMathTest.testLog10Accuracy:351 log10() had errors in excess of 0.51 ULP ==> expected: <true> but was: <false>
[ERROR]   FastMathTest.testPowAccuracy:743 pow() had errors in excess of 0.51 ULP ==> expected: <true> but was: <false>
[ERROR]   FastMathTest.testSinAccuracy:855 sin() had errors in excess of 0.51 ULP ==> expected: <true> but was: <false>
[ERROR]   FastMathTest.testTanAccuracy:913 tan() had errors in excess of 0.51 ULP ==> expected: <true> but was: <false>
[INFO]
[ERROR] Tests run: 6703, Failures: 26, Errors: 0, Skipped: 0

and I get three more failures with JDK Temurin 21.0.8+9-LTS:

[ERROR]   DerivativeStructureTest.testSinAsin:1065 expected: <0.0> but was: <-5.551115123125783E-16>
[ERROR]   FieldDerivativeStructureBinary64Test>FieldDerivativeStructureAbstractTest.testSinAsin:1153 expected: <0.0> but was: <-5.551115123125783E-16>
[ERROR]   FieldDerivativeStructureComplexTest>FieldDerivativeStructureAbstractTest.testSinAsin:1153 expected: <0.0> but was: <-5.551115123125783E-16>

JDK 8 is not available for macOS aarch64.