Integrals from 0 to 1

f(x)=1 :
1.000000000e+000	integral
0.000000000e+000	estimated error
0.000000000e+000	actual error
4.000000000e+000	ncalls

f(x)=x :
5.000000000e-001	integral
0.000000000e+000	estimated error
0.000000000e+000	actual error
4.000000000e+000	ncalls

f(x)=x^2 :
3.333333333e-001	integral
3.836299811e-005	estimated error
5.551115123e-017	actual error
3.200000000e+001	ncalls

f(x)=x^3 :
2.500000000e-001	integral
7.738812284e-005	estimated error
0.000000000e+000	actual error
2.800000000e+001	ncalls

f(x)=x^4 :
1.999954618e-001	integral
7.501615956e-005	estimated error
4.538194633e-006	actual error
3.200000000e+001	ncalls

f(x)=ln(x)/sqrt(x) :
-3.999991447e+000	integral
1.002409694e-004	estimated error
8.552787133e-006	actual error
17164	ncalls

f(x)=Sqrt(1-(x-1)^2) :
3.1415926535897993	integral *4
3.1415926535897931	pi 
6.00020568e-12	estimated error
1.55431223e-15	actual error
25064	ncalls