10 lines
264 B
JavaScript
10 lines
264 B
JavaScript
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export default function(eccent, sinphi) {
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var con;
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if (eccent > 1.0e-7) {
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con = eccent * sinphi;
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return ((1 - eccent * eccent) * (sinphi / (1 - con * con) - (0.5 / eccent) * Math.log((1 - con) / (1 + con))));
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}
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else {
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return (2 * sinphi);
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}
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}
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