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double Geom::length ( D2< SBasis > const &  s,
double  tol 

Calculates the length of a D2<SBasis> through gsl integration.

s the Element.
tol the maximum error allowed.
If you only want the total length, this routine faster and more accurate than constructing an arcLengthSb.

Definition at line 481 of file sbasis-geometric.cpp.

References length_integrating().

    double result = 0;
    double abs_error = 0;
    length_integrating(s, result, abs_error, tol);
    return result;

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