open4 from 0 to 1 Sqrt(x)   = 0.666681 npoints=40
open4cc from 0 to 1 Sqrt(x) = 0.666667 npoints=64
quad from 0 to 1 Sqrt(x)    = 0.666655 npoints=8
exact                       = 0.666667
tolerance                   = 0.00017

open4 from 0 to 1 4*Sqrt(1-x*x)   = 3.141598 npoints=80
open4cc from 0 to 1 4*Sqrt(1-x*x) = 3.141593 npoints=120
quad from 0 to 1 4*Sqrt(1-x*x)    = 3.141588 npoints=16
exact                             = 3.141593
tolerance                         = 0.00041

open4 from 0 to 1 Log(x)   = -0.9999973 npoints=144
open4cc from 0 to 1 Log(x) = -1.000005 npoints=100
quad from 0 to 1 Log(x)    = -1.000148 npoints=32
exact                      = -1
tolerance                  =  0.0002

open4 from 0 to 1 1/Sqrt(x)   = 1.999997 npoints=17140
open4cc from 0 to 1 1/Sqrt(x) = 2 npoints=52
quad from 0 to 1 1/Sqrt(x)    = 2.000025 npoints=8
exact                         = 2
tolerance                     = 0.0003

open4 from 0 to 1 x=>Log(x)/Sqrt(x)   = -3.999998 npoints=29972
open4cc from 0 to 1 x=>Log(x)/Sqrt(x) = -3.999998 npoints=272
quad from 0 to 1 x=>Log(x)/Sqrt(x)    = -3.999985 npoints=120
exact                                 = -4
tolerance                             =  0.0005