Implement known values of Si, Ci, Shi, Chi at oo and -oo
Implement known values of Si, Ci, Shi, Chi at oo and -oo

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