Execution Time4.02s

Test: mathmore-testDerivation (Passed)
Build: master-x86_64-centos7-clang100-opt-master (olsnba08.cern.ch) on 2020-01-21 11:52:53

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 :	0.112488
42999963.4891696423
Time using ROOT::Math::Derivator(2):	0.176885
42999994.922070168
Time using ROOT::Math::Derivator(3):	0.117264
42999963.4891696423
Time using TF1::Derivative :		0.281015
42999960.0000026971


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Test derivation performances - using a User function

Time using ROOT::Math::Derivator :	0.226951
-99995.9598531582742
Time using ROOT::Math::Derivator(2):	0.314203
-99995.9541418749432
Time using ROOT::Math::Derivator(3):	0.233869
-99995.9598531582742
Time using TF1::Derivative :		0.269842
-99995.9599830689403
Time using ROOT::Math::Derivator Multi:	0.248233
-99995.9598531582742


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Test derivation performances - using a Gaussian Param function

Time using ROOT::Math::Derivator (1D) :	0.341821
25239.2585945392566
Time using ROOT::Math::Derivator(ND):	0.313049
25239.2585945392566
Time using TF1::ParamGradient:		0.278443
25239.2585944561288