TST: fix linalg.norm test failure.  Thanks to Rudiger Kessel.
TST: fix linalg.norm test failure.  Thanks to Rudiger Kessel.

The intended output was obviously 0.5 (where numpy.linalg.norm gives 0.0); this
seems to be the case on most but not all systems.  The reason is that snrm
seems to internally use double precision for most BLAS versions, but not all.

Note that test_overflow() for this implementation of norm() passes on all
systems, so even where test_stable() fails the performance of norm() looks
better than for numpy.linalg.norm().

lukauskas/scipy,jor-/scipy,chatcannon/scipy,chatcannon/scipy,vhaasteren/scipy,ogrisel/scipy,josephcslater/scipy,woodscn/scipy,rgommers/scipy,Gillu13/scipy,Stefan-Endres/scipy,jamestwebber/scipy,futurulus/scipy,gdooper/scipy,cpaulik/scipy,e-q/scipy,efiring/scipy,sonnyhu/scipy,fredrikw/scipy,gertingold/scipy,vberaudi/scipy,andim/scipy,WarrenWeckesser/scipy,gef756/scipy,Eric89GXL/scipy,witcxc/scipy,hainm/scipy,dominicelse/scipy,argriffing/scipy,mdhaber/scipy,sauliusl/scipy,sriki18/scipy,maciejkula/scipy,gfyoung/scipy,mikebenfield/scipy,argriffing/scipy,zxsted/scipy,mtrbean/scipy,ndchorley/scipy,njwilson23/scipy,tylerjereddy/scipy,piyush0609/scipy,Newman101/scipy,pnedunuri/scipy,ChanderG/scipy,Srisai85/scipy,pizzathief/scipy,scipy/scipy,lukauskas/scipy,haudren/scipy,andim/scipy,fredrikw/scipy,maciejkula/scipy,anielsen001/scipy,dominicelse/scipy,grlee77/scipy,witcxc/scipy,anntzer/scipy,endolith/scipy,fredrikw/scipy,mdhaber/scipy,kalvdans/scipy,giorgiop/scipy,andyfaff/scipy,surhudm/scipy,vanpact/scipy,anntzer/scipy,hainm/scipy,zaxliu/scipy,FRidh/scipy,nvoron23/scipy,trankmichael/scipy,behzadnouri/scipy,nvoron23/scipy,mgaitan/scipy,bkendzior/scipy,ales-erjavec/scipy,Kamp9/scipy,richardotis/scipy,mortada/scipy,e-q/scipy,mgaitan/scipy,vanpact/scipy,perimosocordiae/scipy,Shaswat27/scipy,mtrbean/scipy,mtrbean/scipy,Eric89GXL/scipy,behzadnouri/scipy,ndchorley/scipy,WillieMaddox/scipy,apbard/scipy,person142/scipy,piyush0609/scipy,aarchiba/scipy,sargas/scipy,fernand/scipy,zaxliu/scipy,rmcgibbo/scipy,fredrikw/scipy,haudren/scipy,lukauskas/scipy,perimosocordiae/scipy,mikebenfield/scipy,anielsen001/scipy,fernand/scipy,ndchorley/scipy,vanpact/scipy,futurulus/scipy,gdooper/scipy,ChanderG/scipy,sriki18/scipy,endolith/scipy,lhilt/scipy,nonhermitian/scipy,ChanderG/scipy,ortylp/scipy,raoulbq/scipy,zaxliu/scipy,maniteja123/scipy,niknow/scipy,mikebenfield/scipy,mortonjt/scipy,mhogg/scipy,Gillu13/scipy,aeklant/scipy,mortada/scipy,njwilson23/scipy,zerothi/scipy,petebachant/scipy,jor-/scipy,zxsted/scipy,andyfaff/scipy,pnedunuri/scipy,WillieMaddox/scipy,Kamp9/scipy,endolith/scipy,nmayorov/scipy,giorgiop/scipy,fernand/scipy,jonycgn/scipy,mingwpy/scipy,lhilt/scipy,hainm/scipy,surhudm/scipy,vberaudi/scipy,trankmichael/scipy,anntzer/scipy,argriffing/scipy,Eric89GXL/scipy,nonhermitian/scipy,lhilt/scipy,raoulbq/scipy,argriffing/scipy,nmayorov/scipy,newemailjdm/scipy,vberaudi/scipy,aeklant/scipy,richardotis/scipy,felipebetancur/scipy,dch312/scipy,pschella/scipy,jonycgn/scipy,arokem/scipy,ales-erjavec/scipy,giorgiop/scipy,dominicelse/scipy,jjhelmus/scipy,newemailjdm/scipy,vanpact/scipy,richardotis/scipy,sauliusl/scipy,ChanderG/scipy,larsmans/scipy,pnedunuri/scipy,mortonjt/scipy,Newman101/scipy,Gillu13/scipy,surhudm/scipy,arokem/scipy,piyush0609/scipy,jonycgn/scipy,anntzer/scipy,efiring/scipy,sauliusl/scipy,andim/scipy,cpaulik/scipy,woodscn/scipy,behzadnouri/scipy,surhudm/scipy,endolith/scipy,matthewalbani/scipy,Dapid/scipy,efiring/scipy,mdhaber/scipy,sargas/scipy,witcxc/scipy,larsmans/scipy,hainm/scipy,gertingold/scipy,teoliphant/scipy,niknow/scipy,maciejkula/scipy,kalvdans/scipy,zaxliu/scipy,petebachant/scipy,WarrenWeckesser/scipy,pbrod/scipy,pbrod/scipy,endolith/scipy,bkendzior/scipy,cpaulik/scipy,Gillu13/scipy,Kamp9/scipy,FRidh/scipy,vberaudi/scipy,matthew-brett/scipy,raoulbq/scipy,vhaasteren/scipy,anntzer/scipy,zaxliu/scipy,jakevdp/scipy,ogrisel/scipy,Dapid/scipy,perimosocordiae/scipy,aarchiba/scipy,WillieMaddox/scipy,befelix/scipy,zerothi/scipy,jor-/scipy,giorgiop/scipy,jjhelmus/scipy,WarrenWeckesser/scipy,ales-erjavec/scipy,vigna/scipy,grlee77/scipy,ChanderG/scipy,chatcannon/scipy,sargas/scipy,gertingold/scipy,andyfaff/scipy,cpaulik/scipy,pizzathief/scipy,josephcslater/scipy,anielsen001/scipy,futurulus/scipy,niknow/scipy,mgaitan/scipy,Stefan-Endres/scipy,zerothi/scipy,vigna/scipy,aarchiba/scipy,Shaswat27/scipy,maniteja123/scipy,kleskjr/scipy,njwilson23/scipy,e-q/scipy,felipebetancur/scipy,jseabold/scipy,behzadnouri/scipy,kleskjr/scipy,behzadnouri/scipy,juliantaylor/scipy,felipebetancur/scipy,juliantaylor/scipy,kleskjr/scipy,chatcannon/scipy,trankmichael/scipy,vigna/scipy,woodscn/scipy,person142/scipy,aman-iitj/scipy,befelix/scipy,mdhaber/scipy,haudren/scipy,Srisai85/scipy,haudren/scipy,Dapid/scipy,mingwpy/scipy,woodscn/scipy,raoulbq/scipy,Stefan-Endres/scipy,mhogg/scipy,Stefan-Endres/scipy,nvoron23/scipy,ilayn/scipy,Gillu13/scipy,matthew-brett/scipy,rmcgibbo/scipy,FRidh/scipy,nonhermitian/scipy,matthew-brett/scipy,niknow/scipy,jamestwebber/scipy,gdooper/scipy,chatcannon/scipy,andyfaff/scipy,pschella/scipy,Srisai85/scipy,juliantaylor/scipy,newemailjdm/scipy,vhaasteren/scipy,lukauskas/scipy,fernand/scipy,Newman101/scipy,pyramania/scipy,apbard/scipy,Dapid/scipy,pnedunuri/scipy,mortada/scipy,nvoron23/scipy,dch312/scipy,jsilter/scipy,witcxc/scipy,Eric89GXL/scipy,jsilter/scipy,andim/scipy,larsmans/scipy,WarrenWeckesser/scipy,rmcgibbo/scipy,arokem/scipy,richardotis/scipy,trankmichael/scipy,josephcslater/scipy,befelix/scipy,piyush0609/scipy,mhog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