presto-main/src/main/java/io/prestosql/operator/scalar/MathFunctions.java/MathFunctions/normalCdf
class MathFunctions:    @Description("normal cdf given a mean, standard deviation, and value")
    @ScalarFunction
    @SqlType(StandardTypes.DOUBLE)
    public static double normalCdf(
            @SqlType(StandardTypes.DOUBLE) double mean,
            @SqlType(StandardTypes.DOUBLE) double standardDeviation,
            @SqlType(StandardTypes.DOUBLE) double value)
    {
        checkCondition(standardDeviation > 0, INVALID_FUNCTION_ARGUMENT, "standardDeviation must be > 0");
        return 0.5 * (1 + Erf.erf((value - mean) / (standardDeviation * Math.sqrt(2))));
    }