result of exp is never more precise than double

3 results were exact to double the precision

20 largest ulp errors (stored in a double)
   0.50147 ulp for exp(7.9751464525000015) = 2907.7836931111069)
   0.50112 ulp for exp(7.525307262000041) = 1854.3829199690072)
   0.50082 ulp for exp(316.21713717944255) = 2.1446565848473367e+137)
   0.50073 ulp for exp(0.97600993740000097) = 2.6538460764181333)
   0.50071 ulp for exp(6.4588955349999146) = 638.35562563325334)
   0.50070 ulp for exp(0.97600993739985087) = 2.653846076417735)
   0.50070 ulp for exp(-707.77032335281604) = 4.1615403798380784e-308)
   0.50066 ulp for exp(0.91695941600526032) = 2.5016722693754492)
   0.50065 ulp for exp(490.43178947956085) = 9.8134094814703679e+212)
   0.50063 ulp for exp(452.55022193997331) = 3.4678808908875724e+196)
   0.50059 ulp for exp(-9.9675171944995959) = 4.6898859781644193e-05)
   0.50053 ulp for exp(-9.8685137710999236) = 5.1779627834708315e-05)
   0.50051 ulp for exp(457.55409682001056) = 5.1667734727547766e+198)
   0.50050 ulp for exp(-707.75067445223965) = 4.2441187028373605e-308)
   0.50050 ulp for exp(424.11211046001824) = 1.5472100620884717e+184)
   0.50050 ulp for exp(455.71280530001269) = 8.1951456099707993e+197)
   0.50048 ulp for exp(709.23993918789063) = 1.0447008178575379e+308)
   0.50047 ulp for exp(368.99137575999828) = 1.7820437520270836e+160)
   0.50046 ulp for exp(6.8046527894999311) = 902.0345196929718)
   0.50045 ulp for exp(7.0629211180000944) = 1167.8516204123957)

<tr><td align=left><a href=exp.res>exp</a></td><td align=right>1333</td><td align=right>0.50147</td><td>7.9751464525000015</td><td>2907.7836931111069</td></tr>