Merge branch 'master' of ssh://117.78.1.188:29418/DDE-WEB

zhanmingkan

2022-05-16 dc9784b9f149e15b0ddfb439135fe712ba2f8e8b

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var HALF_PI = Math.PI/2;
 
module.exports = function(x, L) {
  return 2 * Math.atan(x * Math.exp(L)) - HALF_PI;
};