BUG: Fixed bug caused by discrepancy in treatment of NaNs accross platforms
BUG: Fixed bug caused by discrepancy in treatment of NaNs accross platforms

On some platforms, using NaN as an operand of < generates an error, on others only a warning. The warning allowed NaNs to be detected later on most systems and allow for a graceful failure; the error crashed the routine when the problem included redundancies, presolve was turned off, and sparse solver was in use. This bug is (hopefully) fixed although I cannot test on my own machine.

jor-/scipy,endolith/scipy,vigna/scipy,grlee77/scipy,vigna/scipy,WarrenWeckesser/scipy,matthew-brett/scipy,tylerjereddy/scipy,gertingold/scipy,person142/scipy,arokem/scipy,andyfaff/scipy,mdhaber/scipy,rgommers/scipy,e-q/scipy,vigna/scipy,Stefan-Endres/scipy,aarchiba/scipy,endolith/scipy,matthew-brett/scipy,aarchiba/scipy,matthew-brett/scipy,arokem/scipy,tylerjereddy/scipy,ilayn/scipy,perimosocordiae/scipy,tylerjereddy/scipy,lhilt/scipy,aeklant/scipy,scipy/scipy,Eric89GXL/scipy,Stefan-Endres/scipy,nmayorov/scipy,Stefan-Endres/scipy,gfyoung/scipy,Eric89GXL/scipy,rgommers/scipy,andyfaff/scipy,andyfaff/scipy,aarchiba/scipy,anntzer/scipy,WarrenWeckesser/scipy,anntzer/scipy,jor-/scipy,scipy/scipy,andyfaff/scipy,Stefan-Endres/scipy,ilayn/scipy,perimosocordiae/scipy,endolith/scipy,e-q/scipy,grlee77/scipy,zerothi/scipy,jamestwebber/scipy,jor-/scipy,person142/scipy,aeklant/scipy,Eric89GXL/scipy,gfyoung/scipy,anntzer/scipy,gfyoung/scipy,rgommers/scipy,zerothi/scipy,perimosocordiae/scipy,Eric89GXL/scipy,aeklant/scipy,WarrenWeckesser/scipy,aeklant/scipy,mdhaber/scipy,matthew-brett/scipy,ilayn/scipy,pizzathief/scipy,tylerjereddy/scipy,endolith/scipy,scipy/scipy,person142/scipy,zerothi/scipy,mdhaber/scipy,person142/scipy,e-q/scipy,endolith/scipy,gfyoung/scipy,zerothi/scipy,e-q/scipy,lhilt/scipy,ilayn/scipy,Stefan-Endres/scipy,gertingold/scipy,ilayn/scipy,scipy/scipy,pizzathief/scipy,nmayorov/scipy,arokem/scipy,jor-/scipy,WarrenWeckesser/scipy,pizzathief/scipy,vigna/scipy,vigna/scipy,e-q/scipy,person142/scipy,pizzathief/scipy,lhilt/scipy,rgommers/scipy,grlee77/scipy,aeklant/scipy,zerothi/scipy,gertingold/scipy,scipy/scipy,anntzer/scipy,ilayn/scipy,jamestwebber/scipy,mdhaber/scipy,anntzer/scipy,grlee77/scipy,aarchiba/scipy,WarrenWeckesser/scipy,mdhaber/scipy,mdhaber/scipy,scipy/scipy,perimosocordiae/scipy,endolith/scipy,grlee77/scipy,anntzer/scipy,perimosocordiae/scipy,jor-/scipy,lhilt/scipy,nmayorov/scipy,nmayorov/scipy,matthew-brett/scipy,pizzathief/scipy,jamestwebber/scipy,andyfaff/scipy,zerothi/scipy,gertingold/scipy,nmayorov/scipy,arokem/scipy,tylerjereddy/scipy,rgommers/scipy,jamestwebber/scipy,aarchiba/scipy,Eric89GXL/scipy,gertingold/scipy,arokem/scipy,jamestwebber/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,gfyoung/scipy,lhilt/scipy,WarrenWeckesser/scipy,Eric89GXL/scipy,andyfaff/scipy