Method code for $math.skew()

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  1: arg v;
  2: 
  3: return [[0.0, v[3], -v[2]], [-v[3], 0.0, v[1]], [v[2], -v[1], 0.0]];

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// Miroslav Silovic
// Created 19-Oct-1996 as a part of ColdCore, see: @help Credit