Execution Time2.20s

Test: mathmore-testDerivation (Passed)
Build: PR-4279-x86_64-fedora29-gcc8-opt (root-fedora29-3.cern.ch) on 2019-11-14 21:03:34

Test Timing: Passed
Processors1

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Test output
Derivative of function inheriting from IGenFunction f(x) = 2 + 3x + 4x^2 at x = 2
Return code:  0
Result:       19 +/- 4.51491e-06
Exact result: 19
EvalForward:  19
EvalBackward: 19

Derivative of a free function f(x) = x^(3/2) at x = 2
EvalCentral:  2.12132
EvalForward:  2.12132
EvalBackward: 2.12132
Exact result: 2.12132

Derivative of a free function wrapped in a Functor f(x) = x^(3/2) at x = 2
EvalCentral:  2.12132
EvalForward:  2.12132
EvalBackward: 2.12132
Exact result: 2.12132

Tes a derivator without a function
GSLDerivator: Error : The function has not been specified
0


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Test derivation performances....

Time using ROOT::Math::Derivator :	0.053875
42999963.4891696423
Time using ROOT::Math::Derivator(2):	0.0861621
42999994.922070168
Time using ROOT::Math::Derivator(3):	0.0531409
42999963.4891696423
Time using TF1::Derivative :		0.174366
42999960.0000026971


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Test derivation performances - using a User function

Time using ROOT::Math::Derivator :	0.102795
-99995.9598530638323
Time using ROOT::Math::Derivator(2):	0.126743
-99995.9541332741355
Time using ROOT::Math::Derivator(3):	0.096251
-99995.9598530638323
Time using TF1::Derivative :		0.141187
-99995.9599830689258
Time using ROOT::Math::Derivator Multi:	0.133482
-99995.9598530638323


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Test derivation performances - using a Gaussian Param function

Time using ROOT::Math::Derivator (1D) :	0.207714
25239.2585940694626
Time using ROOT::Math::Derivator(ND):	0.198286
25239.2585940694626
Time using TF1::ParamGradient:		0.145543
25239.258593986131