Hi, I am trying to apply ModelingToolkit.sparsejacobian() to my differential function including element-wise calls of the absolute function abs(). How can I appropriately define the derivative of abs() to be used with the Operation type in ModelingToolKit.jl? Simply using the standard method provid…

Differentiation method for element-wise "abs"-function applied on "Operation"-types in ModelingToolKit.jl?

shashi September 1, 2020, 7:28pm 4

This just means ModelingToolkit needs to register signbit. signbit is the derivative.

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