log1p(0) = 0
log1p(-0) = -0
log1p(1e-19) = 9.9999999999999999995e-20
log1p(-1e-19) = -1.00000000000000000005e-19
log1p(1e-5) = 9.999950000333330833353333166668095e-06
log1p(-1e-5) = -1.0000050000333335833353333500001429e-05
log1p(1) = 0.6931471805599453094172321214581766
log1p(-1) = -Inf
log1p(1e5) = 11.512935464920228753420790626754988
log1p(-1e5) = NaN
log1p(1e19) = 43.74911676688686799644183763900292
log1p(-1e19) = NaN
log1p(2e-19) = 1.9999999999999999998e-19
log1p(-2e-19) = -2.0000000000000000002e-19
log1p(2e-5) = 1.999980000266662666730665600018285e-05
log1p(-2e-5) = -2.000020000266670666730667733351619e-05
log1p(2) = 1.0986122886681096913952452369225257
log1p(-2) = NaN
log1p(2e5) = 12.206077645517673771173699812171662
log1p(-2e5) = NaN
log1p(2e19) = 44.4422639474468133058090697604611
log1p(-2e19) = NaN
log1p(3e-19) = 2.99999999999999999955e-19
log1p(-3e-19) = -3.00000000000000000045e-19
log1p(3e-5) = 2.99995500089997975048598785031242e-05
log1p(-3e-5) = -3.000045000900020250486012150312437e-05
log1p(3) = 1.386294361119890618834464242916353
log1p(-3) = NaN
log1p(3e5) = 12.611541086966115901608628436352577
log1p(-3e5) = NaN
log1p(3e19) = 44.84772905555497768777041620925878
log1p(-3e19) = NaN
log1p(4e-19) = 3.9999999999999999992e-19
log1p(-4e-19) = -4.0000000000000000008e-19
log1p(4e-5) = 3.999920002133269335381265069007156e-05
log1p(-4e-5) = -4.000080002133397335381401602340653e-05
log1p(4) = 1.609437912434100374600759333226188
log1p(-4) = NaN
log1p(4e5) = 12.899222326086994044132745084066039
log1p(-4e5) = NaN
log1p(4e19) = 45.13541112800675861520130188191927
log1p(-4e19) = NaN
log1p(5e-19) = 4.99999999999999999875e-19
log1p(-5e-19) = -5.00000000000000000125e-19
log1p(5e-5) = 4.999875004166510422916406261160226e-05
log1p(-5e-5) = -5.000125004166822922916927094494536e-05
log1p(5) = 1.791759469228055000812477358380702
log1p(-5) = NaN
log1p(5e5) = 13.12236537740232879735737927332108
log1p(-5e5) = NaN
log1p(5e19) = 45.35855467932096837096259697222911
log1p(-5e19) = NaN
log1p(6e-19) = 5.9999999999999999982e-19
log1p(-6e-19) = -6.0000000000000000018e-19
log1p(6e-5) = 5.999820007199676015551222439988758e-05
log1p(-6e-5) = -6.000180007200324015552777639992957e-05
log1p(6) = 1.94591014905531330510535274344318
log1p(-6) = NaN
log1p(6e5) = 13.30468660086356120022342035711374
log1p(-6e5) = NaN
log1p(6e19) = 45.54087623611492299717098166405029
log1p(-6e19) = NaN
log1p(7e-19) = 6.99999999999999999755e-19
log1p(-7e-19) = -7.00000000000000000245e-19
log1p(7e-5) = 6.999755011432733116945372634308461e-05
log1p(-7e-5) = -7.000245011433933616949294267656206e-05
log1p(7) = 2.07944154167983592825169636437453
log1p(-7) = NaN
log1p(7e5) = 13.45883704259594988943243239643026
log1p(-7e5) = NaN
log1p(7e19) = 45.69502691594218130146147609673181
log1p(-7e19) = NaN
log1p(8e-19) = 7.9999999999999999968e-19
log1p(-8e-19) = -8.0000000000000000032e-19
log1p(8e-5) = 7.999680017065642732198297899572173e-05
log1p(-8e-5) = -8.000320017067690732207036032947449e-05
log1p(8) = 2.197224577336219382790490473845051
log1p(-8) = NaN
log1p(8e5) = 13.59236825664928309899269469411207
log1p(-8e5) = NaN
log1p(8e19) = 45.82855830856670392460603400337745
log1p(-8e19) = NaN
log1p(9e-19) = 8.99999999999999999595e-19
log1p(-9e-19) = -9.00000000000000000405e-19
log1p(9e-5) = 8.999595024298359868089143333227482e-05
log1p(-9e-5) = -9.000405024301640368106858033335098e-05
log1p(9) = 2.302585092994045684017991454684364
log1p(-9) = NaN
log1p(9e5) = 13.71015115341694163049818856421585
log1p(-9e5) = NaN
log1p(9e19) = 45.94634134422308737914343922395908
log1p(-9e19) = NaN
