result of cos is never more precise than double

4 results were exact to double the precision

20 largest ulp errors (stored in a double)
   0.56013 ulp for cos(0.29415766839999985) = 0.957046702218876555)
   0.54904 ulp for cos(-9.052012945199996) = -0.931323910616546291)
   0.54679 ulp for cos(455.71280530325015) = -0.983507091125399691)
   0.54667 ulp for cos(-9.8508472202999986) = -0.910597334309988016)
   0.54408 ulp for cos(5.64574408000000094) = 0.803621217893944584)
   0.53855 ulp for cos(331.716190079999933) = 0.274591768971607475)
   0.53824 ulp for cos(6.0286146600000059) = 0.967771508771498534)
   0.53803 ulp for cos(466.053110763043321) = 0.455913476584398847)
   0.53675 ulp for cos(-9.84847574850000207) = -0.91157488953323762)
   0.53578 ulp for cos(376.094201960000078) = 0.624022420682621926)
   0.53533 ulp for cos(5.82581736350000323) = 0.89721788879840747)
   0.53151 ulp for cos(-0.479878203799999681) = 0.887051159148984691)
   0.52702 ulp for cos(419.005858100000069) = -0.386433130505553835)
   0.52605 ulp for cos(8.5809866805000059) = -0.664634884851203145)
   0.52590 ulp for cos(5.82581736349998991) = 0.897217888798401586)
   0.52486 ulp for cos(342.72814748240171) = -0.956933388992279532)
   0.52416 ulp for cos(-9.96751719449999207) = -0.856297126610325754)
   0.52337 ulp for cos(9.36766919349999583) = -0.998369737502459165)
   0.52241 ulp for cos(0.435898091400000021) = 0.906491211566647692)
   0.52237 ulp for cos(8.19313674250000723) = -0.332690447827679425)

<tr><td align=left><a href=cos.res>cos</a></td><td align=right>1418</td><td align=right>0.56013</td><td>0.29415766839999985</td><td>0.957046702218876555</td></tr>