erf: function()

in MotionMark/resources/statistics.js [82:97]

• 14 lines of code
• 2 McCabe index (conditional complexity)

    erf: function(value)
    {
          var sign = (value >= 0) ? 1 : -1;
          value = Math.abs(value);

          var a1 = 0.254829592;
          var a2 = -0.284496736;
          var a3 = 1.421413741;
          var a4 = -1.453152027;
          var a5 = 1.061405429;
          var p = 0.3275911;

          var t = 1.0 / (1.0 + p * value);
          var y = 1.0 - (((((a5 * t + a4) * t) + a3) * t + a2) * t + a1) * t * Math.exp(-value * value);
          return sign * y;
    },