nuderiv.c running 

 testing  npoint=4 
x[0]=1.000000, y=2.600000, y'=-0.400000, y''=-0.200000, y'''=-0.600000 
x[1]=2.000000, y=2.000000, y'=-0.900000, y''=-0.800000, y'''=-0.600000 
x[2]=4.000000, y=-2.200000, y'=-3.700000, y''=-2.000000, y'''=-0.600000 
x[3]=7.000000, y=-25.000000, y'=-12.400000, y''=-3.800000, y'''=-0.600000 
testing order=1, npoint=4, point=0 
nu c[0]=-1.500000 
nu c[1]=1.800000 
nu c[2]=-0.333333 
nu c[3]=0.033333 
order=1, npoint=4, point=0, yp=-0.400000, nuyp=-0.400000, err=3.88578e-16 
testing order=1, npoint=4, point=1 
nu c[0]=-0.555556 
nu c[1]=0.300000 
nu c[2]=0.277778 
nu c[3]=-0.022222 
order=1, npoint=4, point=1, yp=-0.900000, nuyp=-0.900000, err=8.88178e-16 
testing order=1, npoint=4, point=2 
nu c[0]=0.333333 
nu c[1]=-0.900000 
nu c[2]=0.500000 
nu c[3]=0.066667 
order=1, npoint=4, point=2, yp=-3.700000, nuyp=-3.700000, err=8.88178e-16 
testing order=1, npoint=4, point=3 
nu c[0]=-0.833333 
nu c[1]=1.800000 
nu c[2]=-1.666667 
nu c[3]=0.700000 
order=1, npoint=4, point=3, yp=-12.400000, nuyp=-12.400000, err=5.32907e-15 
testing order=2, npoint=4, point=0 
nu c[0]=1.111111 
nu c[1]=-1.800000 
nu c[2]=0.777778 
nu c[3]=-0.088889 
order=2, npoint=4, point=0, ypp=-0.200000, nuyp=-0.200000, err=8.32667e-16 
testing order=2, npoint=4, point=1 
nu c[0]=0.777778 
nu c[1]=-1.200000 
nu c[2]=0.444444 
nu c[3]=-0.022222 
order=2, npoint=4, point=1, ypp=-0.800000, nuyp=-0.800000, err=7.77156e-16 
testing order=2, npoint=4, point=2 
nu c[0]=0.111111 
nu c[1]=-0.000000 
nu c[2]=-0.222222 
nu c[3]=0.111111 
order=2, npoint=4, point=2, ypp=-2.000000, nuyp=-2.000000, err=4.44089e-16 
testing order=2, npoint=4, point=3 
nu c[0]=-0.888889 
nu c[1]=1.800000 
nu c[2]=-1.222222 
nu c[3]=0.311111 
order=2, npoint=4, point=3, ypp=-3.800000, nuyp=-3.800000, err=8.88178e-16 
testing order=3, npoint=4, point=0 
nu c[0]=-0.333333 
nu c[1]=0.600000 
nu c[2]=-0.333333 
nu c[3]=0.066667 
order=3, npoint=4, point=0, yppp=-0.600000, nuyp=-0.600000, err=1.11022e-16 
testing order=3, npoint=4, point=1 
nu c[0]=-0.333333 
nu c[1]=0.600000 
nu c[2]=-0.333333 
nu c[3]=0.066667 
order=3, npoint=4, point=1, yppp=-0.600000, nuyp=-0.600000, err=1.11022e-16 
testing order=3, npoint=4, point=2 
nu c[0]=-0.333333 
nu c[1]=0.600000 
nu c[2]=-0.333333 
nu c[3]=0.066667 
order=3, npoint=4, point=2, yppp=-0.600000, nuyp=-0.600000, err=1.11022e-16 
testing order=3, npoint=4, point=3 
nu c[0]=-0.333333 
nu c[1]=0.600000 
nu c[2]=-0.333333 
nu c[3]=0.066667 
order=3, npoint=4, point=3, yppp=-0.600000, nuyp=-0.600000, err=1.11022e-16 

 testing  npoint=5 
x[0]=1.000000, y=2.552000, y'=-0.442000, y''=-0.076000, y'''=-0.252000, y''''=0.048000 
x[1]=2.000000, y=2.032000, y'=-0.636000, y''=-0.304000, y'''=-0.204000, y''''=0.048000 
x[2]=4.000000, y=-0.088000, y'=-1.588000, y''=-0.616000, y'''=-0.108000, y''''=0.048000 
x[3]=7.000000, y=-7.948000, y'=-3.706000, y''=-0.724000, y'''=0.036000, y''''=0.048000 
x[4]=8.500000, y=-14.291125, y'=-4.724500, y''=-0.616000, y'''=0.108000, y''''=0.048000 
testing order=1, npoint=5, point=0 
nu c[0]=-1.633333 
nu c[1]=2.076923 
nu c[2]=-0.555556 
nu c[3]=0.166667 
nu c[4]=-0.054701 
order=1, npoint=5, point=0, yp=-0.442000, nuyp=-0.442000, err=-2.22045e-16 
testing order=1, npoint=5, point=1 
nu c[0]=-0.481481 
nu c[1]=0.146154 
nu c[2]=0.401235 
nu c[3]=-0.096296 
nu c[4]=0.030389 
order=1, npoint=5, point=1, yp=-0.636000, nuyp=-0.636000, err=-3.44169e-15 
testing order=1, npoint=5, point=2 
nu c[0]=0.200000 
nu c[1]=-0.623077 
nu c[2]=0.277778 
nu c[3]=0.200000 
nu c[4]=-0.054701 
order=1, npoint=5, point=2, yp=-1.588000, nuyp=-1.588000, err=-2.66454e-15 
testing order=1, npoint=5, point=3 
nu c[0]=-0.166667 
nu c[1]=0.415385 
nu c[2]=-0.555556 
nu c[3]=0.033333 
nu c[4]=0.273504 
order=1, npoint=5, point=3, yp=-3.706000, nuyp=-3.706000, err=-1.11022e-14 
testing order=1, npoint=5, point=4 
nu c[0]=0.325000 
nu c[1]=-0.778846 
nu c[2]=0.902778 
nu c[3]=-1.625000 
nu c[4]=1.176068 
order=1, npoint=5, point=4, yp=-4.724500, nuyp=-4.724500, err=5.32907e-15 
testing order=2, npoint=5, point=0 
nu c[0]=1.511111 
nu c[1]=-2.630769 
nu c[2]=1.444444 
nu c[3]=-0.488889 
nu c[4]=0.164103 
order=2, npoint=5, point=0, ypp=-0.076000, nuyp=-0.076000, err=-9.02056e-16 
testing order=2, npoint=5, point=1 
nu c[0]=0.822222 
nu c[1]=-1.292308 
nu c[2]=0.518519 
nu c[3]=-0.066667 
nu c[4]=0.018234 
order=2, npoint=5, point=1, ypp=-0.304000, nuyp=-0.304000, err=-1.77636e-15 
testing order=2, npoint=5, point=2 
nu c[0]=-0.022222 
nu c[1]=0.276923 
nu c[2]=-0.444444 
nu c[3]=0.244444 
nu c[4]=-0.054701 
order=2, npoint=5, point=2, ypp=-0.616000, nuyp=-0.616000, err=-2.33147e-15 
testing order=2, npoint=5, point=3 
nu c[0]=0.044444 
nu c[1]=-0.138462 
nu c[2]=0.333333 
nu c[3]=-0.622222 
nu c[4]=0.382906 
order=2, npoint=5, point=3, ypp=-0.724000, nuyp=-0.724000, err=-1.55431e-15 
testing order=2, npoint=5, point=4 
nu c[0]=0.677778 
nu c[1]=-1.592308 
nu c[2]=1.722222 
nu c[3]=-1.655556 
nu c[4]=0.847863 
order=2, npoint=5, point=4, ypp=-0.616000, nuyp=-0.616000, err=-5.55112e-16 
testing order=3, npoint=5, point=0 
nu c[0]=-0.777778 
nu c[1]=1.523077 
nu c[2]=-1.074074 
nu c[3]=0.511111 
nu c[4]=-0.182336 
order=3, npoint=5, point=0, yppp=-0.252000, nuyp=-0.252000, err=-3.88578e-16 
testing order=3, npoint=5, point=1 
nu c[0]=-0.600000 
nu c[1]=1.153846 
nu c[2]=-0.777778 
nu c[3]=0.333333 
nu c[4]=-0.109402 
order=3, npoint=5, point=1, yppp=-0.204000, nuyp=-0.204000, err=-3.60822e-16 
testing order=3, npoint=5, point=2 
nu c[0]=-0.244444 
nu c[1]=0.415385 
nu c[2]=-0.185185 
nu c[3]=-0.022222 
nu c[4]=0.036467 
order=3, npoint=5, point=2, yppp=-0.108000, nuyp=-0.108000, err=0 
testing order=3, npoint=5, point=3 
nu c[0]=0.288889 
nu c[1]=-0.692308 
nu c[2]=0.703704 
nu c[3]=-0.555556 
nu c[4]=0.255271 
order=3, npoint=5, point=3, yppp=0.036000, nuyp=0.036000, err=-2.98372e-16 
testing order=3, npoint=5, point=4 
nu c[0]=0.555556 
nu c[1]=-1.246154 
nu c[2]=1.148148 
nu c[3]=-0.822222 
nu c[4]=0.364672 
order=3, npoint=5, point=4, yppp=0.108000, nuyp=0.108000, err=9.4369e-16 
testing order=4, npoint=5, point=0 
nu c[0]=0.177778 
nu c[1]=-0.369231 
nu c[2]=0.296296 
nu c[3]=-0.177778 
nu c[4]=0.072934 
order=4, npoint=5, point=0, ypppp=0.048000, nuyp=0.048000, err=0 
testing order=4, npoint=5, point=1 
nu c[0]=0.177778 
nu c[1]=-0.369231 
nu c[2]=0.296296 
nu c[3]=-0.177778 
nu c[4]=0.072934 
order=4, npoint=5, point=1, ypppp=0.048000, nuyp=0.048000, err=0 
testing order=4, npoint=5, point=2 
nu c[0]=0.177778 
nu c[1]=-0.369231 
nu c[2]=0.296296 
nu c[3]=-0.177778 
nu c[4]=0.072934 
order=4, npoint=5, point=2, ypppp=0.048000, nuyp=0.048000, err=0 
testing order=4, npoint=5, point=3 
nu c[0]=0.177778 
nu c[1]=-0.369231 
nu c[2]=0.296296 
nu c[3]=-0.177778 
nu c[4]=0.072934 
order=4, npoint=5, point=3, ypppp=0.048000, nuyp=0.048000, err=0 
testing order=4, npoint=5, point=4 
nu c[0]=0.177778 
nu c[1]=-0.369231 
nu c[2]=0.296296 
nu c[3]=-0.177778 
nu c[4]=0.072934 
order=4, npoint=5, point=4, ypppp=0.048000, nuyp=0.048000, err=0