HexG1Basis.h

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basis[0] = (0.5 - 0.86602540378443871 * rr) * (0.5 - 0.86602540378443871 * ss) *
  (0.5 - 0.86602540378443871 * tt);
basis[1] = (0.5 - 0.86602540378443871 * ss) * (0.5 - 0.86602540378443871 * tt) *
  (0.86602540378443871 * rr + 0.5);
basis[2] = (0.5 - 0.86602540378443871 * rr) * (0.5 - 0.86602540378443871 * tt) *
  (0.86602540378443871 * ss + 0.5);
basis[3] = (0.5 - 0.86602540378443871 * tt) * (0.86602540378443871 * rr + 0.5) *
  (0.86602540378443871 * ss + 0.5);
basis[4] = (0.5 - 0.86602540378443871 * rr) * (0.5 - 0.86602540378443871 * ss) *
  (0.86602540378443871 * tt + 0.5);
basis[5] = (0.5 - 0.86602540378443871 * ss) * (0.86602540378443871 * rr + 0.5) *
  (0.86602540378443871 * tt + 0.5);
basis[6] = (0.5 - 0.86602540378443871 * rr) * (0.86602540378443871 * ss + 0.5) *
  (0.86602540378443871 * tt + 0.5);
basis[7] = (0.86602540378443871 * rr + 0.5) * (0.86602540378443871 * ss + 0.5) *
  (0.86602540378443871 * tt + 0.5);