diff --git a/dune/tectonic/nicefunction.hh b/dune/tectonic/nicefunction.hh index ed6dc388752cbb74aa59e8916d29dc3867b9a00a..6dedd620b9447efa4755f42b4d87a586cabf46b8 100644 --- a/dune/tectonic/nicefunction.hh +++ b/dune/tectonic/nicefunction.hh @@ -15,7 +15,9 @@ class NiceFunction : public VirtualFunction<double, double> { virtual double leftDifferential(double s) const = 0; virtual double rightDifferential(double s) const = 0; - double virtual second_deriv(double s) const = 0; + double virtual second_deriv(double x) const { + DUNE_THROW(NotImplemented, "second derivative not implemented"); + } }; class RuinaFunction : public NiceFunction {