ENH: add a unit test for spacing/nextafter equivalence.
ENH: add a unit test for spacing/nextafter equivalence.

Spacing and nextafter use totally different implementation, so testing
for their equivalence does not hurt.

Srisai85/numpy,mattip/numpy,jschueller/numpy,bringingheavendown/numpy,mattip/numpy,dwf/numpy,rmcgibbo/numpy,ekalosak/numpy,ewmoore/numpy,chatcannon/numpy,tacaswell/numpy,ekalosak/numpy,dato-code/numpy,maniteja123/numpy,ContinuumIO/numpy,tdsmith/numpy,pyparallel/numpy,mindw/numpy,b-carter/numpy,ogrisel/numpy,ChanderG/numpy,mortada/numpy,tdsmith/numpy,moreati/numpy,numpy/numpy,gmcastil/numpy,jonathanunderwood/numpy,BMJHayward/numpy,ajdawson/numpy,ogrisel/numpy,dwf/numpy,stuarteberg/numpy,yiakwy/numpy,musically-ut/numpy,simongibbons/numpy,Linkid/numpy,shoyer/numpy,nguyentu1602/numpy,cowlicks/numpy,grlee77/numpy,tynn/numpy,seberg/numpy,bmorris3/numpy,Eric89GXL/numpy,mingwpy/numpy,pdebuyl/numpy,ekalosak/numpy,leifdenby/numpy,shoyer/numpy,ChanderG/numpy,MaPePeR/numpy,jakirkham/numpy,pelson/numpy,CMartelLML/numpy,dwillmer/numpy,ewmoore/numpy,brandon-rhodes/numpy,gfyoung/numpy,nguyentu1602/numpy,ViralLeadership/numpy,Srisai85/numpy,larsmans/numpy,githubmlai/numpy,tacaswell/numpy,ViralLeadership/numpy,solarjoe/numpy,yiakwy/numpy,Linkid/numpy,naritta/numpy,numpy/numpy-refactor,WarrenWeckesser/numpy,groutr/numpy,jakirkham/numpy,mhvk/numpy,GaZ3ll3/numpy,charris/numpy,dimasad/numpy,grlee77/numpy,groutr/numpy,yiakwy/numpy,bertrand-l/numpy,WarrenWeckesser/numpy,ChanderG/numpy,rherault-insa/numpy,naritta/numpy,chiffa/numpy,larsmans/numpy,abalkin/numpy,jankoslavic/numpy,embray/numpy,utke1/numpy,cjermain/numpy,Anwesh43/numpy,rherault-insa/numpy,numpy/numpy-refactor,MichaelAquilina/numpy,musically-ut/numpy,pizzathief/numpy,astrofrog/numpy,stuarteberg/numpy,andsor/numpy,Dapid/numpy,pyparallel/numpy,pizzathief/numpy,kiwifb/numpy,maniteja123/numpy,ahaldane/numpy,ddasilva/numpy,felipebetancur/numpy,madphysicist/numpy,astrofrog/numpy,nguyentu1602/numpy,embray/numpy,madphysicist/numpy,hainm/numpy,WillieMaddox/numpy,SiccarPoint/numpy,jorisvandenbossche/numpy,trankmichael/numpy,joferkington/numpy,mhvk/numpy,behzadnouri/numpy,Dapid/numpy,SiccarPoint/numpy,brandon-rhodes/numpy,pdebuyl/numpy,stuarteberg/numpy,pelson/numpy,ogrisel/numpy,ChristopherHogan/numpy,jschueller/numpy,endolith/numpy,felipebetancur/numpy,ddasilva/numpy,CMartelLML/numpy,mattip/numpy,dimasad/numpy,ContinuumIO/numpy,MichaelAquilina/numpy,jankoslavic/numpy,NextThought/pypy-numpy,anntzer/numpy,moreati/numpy,dch312/numpy,leifdenby/numpy,sinhrks/numpy,SunghanKim/numpy,has2k1/numpy,immerrr/numpy,Eric89GXL/numpy,mortada/numpy,numpy/numpy-refactor,ddasilva/numpy,ahaldane/numpy,gmcastil/numpy,mattip/numpy,brandon-rhodes/numpy,Eric89GXL/numpy,NextThought/pypy-numpy,mingwpy/numpy,nbeaver/numpy,WillieMaddox/numpy,felipebetancur/numpy,Dapid/numpy,CMartelLML/numpy,gfyoung/numpy,empeeu/numpy,behzadnouri/numpy,Srisai85/numpy,mwiebe/numpy,dato-code/numpy,kiwifb/numpy,SunghanKim/numpy,andsor/numpy,rudimeier/numpy,WillieMaddox/numpy,empeeu/numpy,ESSS/numpy,empeeu/numpy,jankoslavic/numpy,cowlicks/numpy,skymanaditya1/numpy,shoyer/numpy,has2k1/numpy,abalkin/numpy,jorisvandenbossche/numpy,dch312/numpy,immerrr/numpy,GrimDerp/numpy,grlee77/numpy,SunghanKim/numpy,mindw/numpy,numpy/numpy,dch312/numpy,jorisvandenbossche/numpy,AustereCuriosity/numpy,jankoslavic/numpy,Linkid/numpy,sigma-random/numpy,MaPePeR/numpy,GrimDerp/numpy,rhythmsosad/numpy,mwiebe/numpy,endolith/numpy,embray/numpy,maniteja123/numpy,bringingheavendown/numpy,hainm/numpy,seberg/numpy,ewmoore/numpy,argriffing/numpy,pbrod/numpy,mhvk/numpy,tdsmith/numpy,sinhrks/numpy,WarrenWeckesser/numpy,abalkin/numpy,ewmoore/numpy,ChristopherHogan/numpy,sigma-random/numpy,kirillzhuravlev/numpy,anntzer/numpy,seberg/numpy,tacaswell/numpy,ESSS/numpy,GrimDerp/numpy,sinhrks/numpy,tdsmith/numpy,charris/numpy,groutr/numpy,NextThought/pypy-numpy,githubmlai/numpy,BabeNovelty/numpy,Yusa95/numpy,immerrr/numpy,githubmlai/numpy,ogrisel/numpy,drasmuss/numpy,dwillmer/numpy,rmcgibbo/numpy,mortada/numpy,MaPePeR/numpy,GrimDerp/numpy,GaZ3ll3/numpy,skymanaditya1/numpy,mhvk/numpy,jorisvandenbossche/numpy,njase/numpy,immerrr/numpy,jonathanunderwood/numpy,mwiebe/numpy,mhvk/numpy,endolith/numpy,ewmoore/numpy,njase/numpy,pbrod/numpy,skymanaditya1/numpy,sinhrks/numpy,rajathkumarmp/numpy,Srisai85/numpy,rudimeier/numpy,rhythmsosad/numpy,cowlicks/numpy,pizzathief/numpy,has2k1/numpy,endolith/numpy,solarjoe/numpy,ajdawson/numpy,ChanderG/numpy,tynn/numpy,dwillmer/numpy,mindw/numpy,naritta/numpy,dch312/numpy,madphysicist/numpy,Anwesh43/numpy,shoyer/numpy,joferkington/numpy,leifdenby/numpy,matthew-brett/numpy,BabeNovelty/numpy,Yusa95/numpy,rgommers/numpy,MSeifert04/numpy,dato-code/numpy,mathdd/numpy,MSeifert04/numpy,MichaelAquilina/numpy,Linkid/numpy,rgommers/numpy,pelson/numpy,BMJHayward/numpy,trankmichael/numpy,rajathkumarmp/numpy,ekalosak/numpy,kirillzhuravlev/numpy,dwf/numpy,skwbc/numpy,skymanaditya1/numpy,charris/numpy,ChristopherHogan/numpy,njase/numpy,Anwesh43/numpy,andsor/numpy,mathdd/numpy,rherault-insa/numpy,Yusa95/numpy,WarrenWeckesser/numpy,jakirkham/numpy,pelson/numpy,dwillmer/numpy,mathdd/numpy,rajathkumarmp/numpy,rgommers/numpy,pdebuyl/numpy,utke1/numpy,MichaelAq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