integral from 0  to 1  f(x)= function (x) {
    n++;
    return Math.log(x);
}
adapt integral        =	 -0.9998879113990891 
strata integral       =	 -0.9999314506761938 
exact integral        =	 -1 
adapt estimated error =	 0.00008832972893686137 
adapt actuall error   =	 0.0001120886009109423 
strata estimated error=	 0.00007017783269945891 
strata actuall error  =	 0.0000685493238061774 
adapt npoints         =	 64 
strata npoints        =	 14136

integral from 0  to 1  f(x)= function (x) {
    n++;
    return Math.sqrt(1 - (x - 1) * (x - 1)) * 4;
}

exact integral        =	 3.141592653589793 
adapt integral        =	 3.141593091537317 
strata integral       =	 3.1415933413845663 
adapt estimated error =	 0.0000018291921159929118 
adapt actuall error   =	 4.3794752402348536e-7 
strara estimated error=	 7.005535215920018e-7 
strata actuall error  =	 6.877947731354084e-7 
adapt npoints         =	 236 
strata npoints        =	 148614

integral from 0  to 1  f(x)= function (x) {
    n++;
    return x < 0.3333333333333333 ? 1 : 0;
}

exact integral        =	 0.3333333333333333 
adapt integral        =	 0.25 
strata integral       =	 0.3333333336437742 
adapt estimated error =	 0 
adapt actuall error   =	 0.08333333333333331 
strara estimated error=	 6.782340082254436e-10 
strata actuall error  =	 3.1044089521259366e-10 
adapt npoints         =	 8 
strata npoints        =	 952