1 files changed, 28 insertions, 0 deletions
diff --git a/node_modules/locutus/php/math/log1p.js b/node_modules/locutus/php/math/log1p.js
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+++ b/node_modules/locutus/php/math/log1p.js
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+'use strict';
+
+module.exports = function log1p(x) {
+  //  discuss at: http://locutus.io/php/log1p/
+  // original by: Brett Zamir (http://brett-zamir.me)
+  // improved by: Robert Eisele (http://www.xarg.org/)
+  //      note 1: Precision 'n' can be adjusted as desired
+  //   example 1: log1p(1e-15)
+  //   returns 1: 9.999999999999995e-16
+
+  var ret = 0;
+  // degree of precision
+  var n = 50;
+
+  if (x <= -1) {
+    // JavaScript style would be to return Number.NEGATIVE_INFINITY
+    return '-INF';
+  }
+  if (x < 0 || x > 1) {
+    return Math.log(1 + x);
+  }
+  for (var i = 1; i < n; i++) {
+    ret += Math.pow(-x, i) / i;
+  }
+
+  return -ret;
+};
+//# sourceMappingURL=log1p.js.map
+\ No newline at end of file