Execution Time6.26s

Test: mathmore-testDerivation (Passed)
Build: master-x86_64-fedora29-gcc8-dbg (root-fedora29-2.cern.ch) on 2019-11-14 11:43:11

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
0
GSLDerivator: Error : The function has not been specified


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Test derivation performances....

Time using ROOT::Math::Derivator :	0.258995
42999963.4891696423
Time using ROOT::Math::Derivator(2):	0.265199
42999994.922070168
Time using ROOT::Math::Derivator(3):	0.217025
42999963.4891696423
Time using TF1::Derivative :		0.399993
42999960.0000026971


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Test derivation performances - using a User function

Time using ROOT::Math::Derivator :	0.344073
-99995.9598530638323
Time using ROOT::Math::Derivator(2):	0.344331
-99995.9541332741355
Time using ROOT::Math::Derivator(3):	0.223854
-99995.9598530638323
Time using TF1::Derivative :		0.520069
-99995.9599830689258
Time using ROOT::Math::Derivator Multi:	0.679248
-99995.9598530638323


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Test derivation performances - using a Gaussian Param function

Time using ROOT::Math::Derivator (1D) :	0.590162
25239.2585940694626
Time using ROOT::Math::Derivator(ND):	0.413555
25239.2585940694626
Time using TF1::ParamGradient:		0.706052
25239.258593986131