result of y0 is never more precise than double

20 largest ulp errors (stored in a double)
   5920543797734652.00000 ulp for y0(0.893576966279167495) = -4.16333634234433703e-17)
   498412046964264.56250 ulp for y0(0.893576966279167717) = 1.59594559789866253e-16)
   394055091549128.56250 ulp for y0(0.893576966279167606) = 6.93889390390722838e-17)
   313128784114123.68750 ulp for y0(3.95767841931485798) = -4.52608697686150587e-17)
   145502392036926.96875 ulp for y0(3.95767841931485753) = 1.31846881499878651e-16)
   47026658260743.16406 ulp for y0(0.893576966279168605) = 9.43689570931383059e-16)
   36648964041474.43750 ulp for y0(35.3464523052143207) = -2.41991292380241248e-17)
   23787329374194.51172 ulp for y0(10.2223450434964178) = -1.98360437439832201e-16)
   14063098471435.53125 ulp for y0(47.9118963315164805) = -2.16334144296133255e-17)
   13807411032894.48242 ulp for y0(7.08605106030177279) = 2.64719343553246982e-17)
   13752138294832.75977 ulp for y0(3.95767841931485309) = 1.92850662492359889e-15)
   9840347435664.23828 ulp for y0(3.95767841931485664) = 4.93933839648799145e-16)
   8649694640544.91797 ulp for y0(25.9229576531809229) = 3.52735453491345901e-17)
   6971793391401.71777 ulp for y0(13.3610974738727624) = -2.42851919436529614e-16)
   6804506337957.03613 ulp for y0(13.3610974738727641) = 1.44854342243839592e-16)
   6240317840749.72852 ulp for y0(7.0860510603017719) = -2.39718072217662521e-16)
   5633809526779.45605 ulp for y0(10.222345043496416) = 2.44889428938064465e-16)
   5098616164127.27441 ulp for y0(29.0640302527283971) = 1.37064300066365998e-16)
   3432561437882.67578 ulp for y0(0.893576966279169493) = 1.73472347597680709e-15)
   3062434798282.89844 ulp for y0(13.361097473872757) = -1.40623845742078696e-15)

<tr><td align=left><a href=y0.res>y0</a></td><td align=right>976</td><td align=right>5920543797734652.00000</td><td>0.893576966279167495</td><td>-4.16333634234433703e-17</td></tr>