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

zhanmingkan

2022-05-17 ad3562d25c2bcb4044ba631bd91d20703ab3bfe7

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module.exports = function(eccent, sinphi, cosphi) {
  var con = eccent * sinphi;
  return cosphi / (Math.sqrt(1 - con * con));
};