simplify Mul._eval_is_negative routine
simplify Mul._eval_is_negative routine

toolforger/sympy,postvakje/sympy,kaushik94/sympy,debugger22/sympy,pandeyadarsh/sympy,jamesblunt/sympy,garvitr/sympy,pandeyadarsh/sympy,Vishluck/sympy,abloomston/sympy,Designist/sympy,sahilshekhawat/sympy,atreyv/sympy,Sumith1896/sympy,kumarkrishna/sympy,postvakje/sympy,souravsingh/sympy,chaffra/sympy,cccfran/sympy,beni55/sympy,bukzor/sympy,Curious72/sympy,dqnykamp/sympy,oliverlee/sympy,garvitr/sympy,shikil/sympy,lindsayad/sympy,atsao72/sympy,drufat/sympy,ChristinaZografou/sympy,debugger22/sympy,Vishluck/sympy,Titan-C/sympy,MechCoder/sympy,jerli/sympy,ahhda/sympy,skidzo/sympy,jaimahajan1997/sympy,madan96/sympy,sampadsaha5/sympy,shipci/sympy,oliverlee/sympy,Mitchkoens/sympy,postvakje/sympy,jaimahajan1997/sympy,ahhda/sympy,jbbskinny/sympy,wyom/sympy,emon10005/sympy,Sumith1896/sympy,MridulS/sympy,jbbskinny/sympy,kaushik94/sympy,wyom/sympy,drufat/sympy,sahmed95/sympy,Davidjohnwilson/sympy,chaffra/sympy,beni55/sympy,kevalds51/sympy,souravsingh/sympy,shipci/sympy,debugger22/sympy,yashsharan/sympy,yashsharan/sympy,VaibhavAgarwalVA/sympy,wyom/sympy,maniteja123/sympy,grevutiu-gabriel/sympy,mafiya69/sympy,kaushik94/sympy,farhaanbukhsh/sympy,Gadal/sympy,jbbskinny/sympy,abhiii5459/sympy,dqnykamp/sympy,cccfran/sympy,souravsingh/sympy,meghana1995/sympy,Arafatk/sympy,ChristinaZografou/sympy,kaichogami/sympy,cswiercz/sympy,Davidjohnwilson/sympy,Titan-C/sympy,hargup/sympy,iamutkarshtiwari/sympy,atsao72/sympy,cswiercz/sympy,yashsharan/sympy,kevalds51/sympy,oliverlee/sympy,madan96/sympy,MechCoder/sympy,MridulS/sympy,aktech/sympy,iamutkarshtiwari/sympy,cswiercz/sympy,Curious72/sympy,wanglongqi/sympy,kumarkrishna/sympy,yukoba/sympy,vipulroxx/sympy,iamutkarshtiwari/sympy,Mitchkoens/sympy,chaffra/sympy,VaibhavAgarwalVA/sympy,MechCoder/sympy,sunny94/temp,asm666/sympy,sahmed95/sympy,sunny94/temp,cccfran/sympy,AkademieOlympia/sympy,abhiii5459/sympy,grevutiu-gabriel/sympy,abhiii5459/sympy,emon10005/sympy,skirpichev/omg,jamesblunt/sympy,farhaanbukhsh/sympy,Designist/sympy,sampadsaha5/sympy,sahilshekhawat/sympy,maniteja123/sympy,lindsayad/sympy,jaimahajan1997/sympy,jerli/sympy,Titan-C/sympy,asm666/sympy,jerli/sympy,AunShiLord/sympy,madan96/sympy,pbrady/sympy,mcdaniel67/sympy,liangjiaxing/sympy,Curious72/sympy,bukzor/sympy,wanglongqi/sympy,sunny94/temp,ga7g08/sympy,moble/sympy,mcdaniel67/sympy,rahuldan/sympy,mcdaniel67/sympy,rahuldan/sympy,liangjiaxing/sympy,sahilshekhawat/sympy,Davidjohnwilson/sympy,moble/sympy,jamesblunt/sympy,atsao72/sympy,AkademieOlympia/sympy,wanglongqi/sympy,Designist/sympy,AunShiLord/sympy,Arafatk/sympy,kaichogami/sympy,kevalds51/sympy,diofant/diofant,ga7g08/sympy,shikil/sympy,ChristinaZografou/sympy,ga7g08/sympy,toolforger/sympy,sahmed95/sympy,kumarkrishna/sympy,atreyv/sympy,vipulroxx/sympy,beni55/sympy,mafiya69/sympy,shikil/sympy,VaibhavAgarwalVA/sympy,Shaswat27/sympy,Gadal/sympy,MridulS/sympy,liangjiaxing/sympy,moble/sympy,abloomston/sympy,AkademieOlympia/sympy,pbrady/sympy,farhaanbukhsh/sympy,ahhda/sympy,aktech/sympy,Gadal/sympy,Sumith1896/sympy,toolforger/sympy,maniteja123/sympy,aktech/sympy,Arafatk/sympy,hargup/sympy,asm666/sympy,Shaswat27/sympy,saurabhjn76/sympy,vipulroxx/sympy,drufat/sympy,abloomston/sympy,skidzo/sympy,meghana1995/sympy,atreyv/sympy,Vishluck/sympy,grevutiu-gabriel/sympy,meghana1995/sympy,saurabhjn76/sympy,skidzo/sympy,sampadsaha5/sympy,pbrady/sympy,shipci/sympy,dqnykamp/sympy,rahuldan/sympy,AunShiLord/sympy,bukzor/sympy,garvitr/sympy,Shaswat27/sympy,yukoba/sympy,yukoba/sympy,mafiya69/sympy,pandeyadarsh/sympy,lindsayad/sympy,hargup/sympy,emon10005/sympy,Mitchkoens/sympy,saurabhjn76/sympy,kaichogami/sympy