Annex60.Utilities.Psychrometrics.Functions.BaseClasses.Examples.SaturationPressureDerivativeCheck

# .Annex60.Utilities.Psychrometrics.Functions.BaseClasses.Examples.SaturationPressureDerivativeCheck

Model to test correct implementation of derivative

## Information

This example checks whether the function derivative is implemented correctly. If the derivative implementation is not correct, the model will stop with an assert statement.

## Revisions

- April 22, 2016, by Michael Wetter:
  Changed accuarcy test in assertion to use the relative error because the magnitude of `y` is 1E5 and hence testing an absolute error is too stringent. This is for Buildings, issue 510.
- August 17, 2015 by Michael Wetter:
  Updated regression test to have slope that is different from one. This is for issue 303.
- October 4, 2014, by Michael Wetter:
  Added a high tolerance which is needed for OpenModelica to pass the assert statement.
- November 20, 2013, by Michael Wetter:
  First implementation.

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