Function grad

python/utils.py:33–47

(func)

    return TangentialFacetFESpace(mesh, **args)

def grad(func):
    try:
        # now in C++ code
        # if "normal vector" in str(func):
        # return specialcf.Weingarten(func.dim)
        if func.derivname == "grad":
            return func.Deriv()
    except:
        pass
    add = func.Operator("grad")
    if add:
        return add        
    #     if func.derivname != "grad":
    raise Exception("cannot form grad")
    # return func.Deriv()

def Grad(func):
    """ Jacobi-matrix"""