ODE IVP: a=0; u''=-u, u(a)=0, u'(a)=1; b=4PI
Absolute/relative accuracy goals: acc=0.01 eps=0.01
Numerical solution:   u(b) = 0.0012648     u'(b) = 0.99337
Exact solution:     sin(b) = -4.8986e-16  cos(b) = 1
tolerance    = 0.019934
actual error = 0.006747
test passed
npoints = 58