result of log10 is never more precise than double

1 results were exact to double the precision

20 largest ulp errors (stored in a double)
   0.50054 ulp for log10(1.00000006707391353) = 2.91298295507387694e-08)
   0.50046 ulp for log10(5.32545250349999044) = 0.726356515664524194)
   0.50040 ulp for log10(457.554096819951269) = 2.66044244826364462)
   0.50039 ulp for log10(1.00000605545456378) = 2.62984254002768479e-06)
   0.50038 ulp for log10(0.133877919099995552) = -0.873291046616118116)
   0.50037 ulp for log10(0.00999999999999892121) = -2.00000000000004707)
   0.50034 ulp for log10(0.586266491299996639) = -0.231904927680093353)
   0.50034 ulp for log10(0.206222208500007165) = -0.685664566454834201)
   0.50034 ulp for log10(5.32545250349982435) = 0.726356515664510649)
   0.50032 ulp for log10(9.15745309749891589) = 0.961774702979544927)
   0.50029 ulp for log10(1.00000002015779965) = 8.75442106780916506e-09)
   0.50029 ulp for log10(447.928298939961508) = 2.65120850090245419)
   0.50029 ulp for log10(1.00000001200265665) = 5.21268751841020956e-09)
   0.50028 ulp for log10(1.00000000715134285) = 3.10578872738236112e-09)
   0.50027 ulp for log10(1.00000000000004193e-05) = -4.99999999999998224)
   0.50025 ulp for log10(999999.999999962165) = 5.99999999999998401)
   0.50020 ulp for log10(1.00012207031230016) = 5.30112275534380315e-05)
   0.50020 ulp for log10(0.120953929999987428) = -0.917380016102597118)
   0.50020 ulp for log10(1.00012207030995137) = 5.30112265334969419e-05)
   0.50016 ulp for log10(7.41256848649795153) = 0.869968718941727781)

<tr><td align=left><a href=log10.res>log10</a></td><td align=right>1285</td><td align=right>0.50054</td><td>1.00000006707391353</td><td>2.91298295507387694e-08</td></tr>