Clean up relative delta_p code
Clean up relative delta_p code

Use std:: functions, make things more readable.

vikramvgarg/libmesh,pbauman/libmesh,friedmud/libmesh,jwpeterson/libmesh,coreymbryant/libmesh,90jrong/libmesh,giorgiobornia/libmesh,friedmud/libmesh,benkirk/libmesh,benkirk/libmesh,pbauman/libmesh,libMesh/libmesh,dmcdougall/libmesh,svallaghe/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,roystgnr/libmesh,vikramvgarg/libmesh,dschwen/libmesh,dmcdougall/libmesh,giorgiobornia/libmesh,giorgiobornia/libmesh,capitalaslash/libmesh,roystgnr/libmesh,svallaghe/libmesh,capitalaslash/libmesh,svallaghe/libmesh,dschwen/libmesh,roystgnr/libmesh,permcody/libmesh,dknez/libmesh,vikramvgarg/libmesh,dmcdougall/libmesh,giorgiobornia/libmesh,90jrong/libmesh,hrittich/libmesh,cahaynes/libmesh,dmcdougall/libmesh,dknez/libmesh,aeslaughter/libmesh,svallaghe/libmesh,roystgnr/libmesh,hrittich/libmesh,permcody/libmesh,balborian/libmesh,vikramvgarg/libmesh,pbauman/libmesh,cahaynes/libmesh,capitalaslash/libmesh,dschwen/libmesh,aeslaughter/libmesh,giorgiobornia/libmesh,BalticPinguin/libmesh,benkirk/libmesh,jwpeterson/libmesh,balborian/libmesh,roystgnr/libmesh,dschwen/libmesh,balborian/libmesh,dschwen/libmesh,friedmud/libmesh,aeslaughter/libmesh,balborian/libmesh,svallaghe/libmesh,90jrong/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,benkirk/libmesh,aeslaughter/libmesh,cahaynes/libmesh,libMesh/libmesh,pbauman/libmesh,permcody/libmesh,90jrong/libmesh,svallaghe/libmesh,jwpeterson/libmesh,aeslaughter/libmesh,coreymbryant/libmesh,aeslaughter/libmesh,roystgnr/libmesh,permcody/libmesh,dmcdougall/libmesh,BalticPinguin/libmesh,roystgnr/libmesh,cahaynes/libmesh,permcody/libmesh,giorgiobornia/libmesh,pbauman/libmesh,hrittich/libmesh,jwpeterson/libmesh,pbauman/libmesh,90jrong/libmesh,hrittich/libmesh,permcody/libmesh,dknez/libmesh,vikramvgarg/libmesh,friedmud/libmesh,90jrong/libmesh,dschwen/libmesh,giorgiobornia/libmesh,pbauman/libmesh,capitalaslash/libmesh,dmcdougall/libmesh,svallaghe/libmesh,roystgnr/libmesh,vikramvgarg/libmesh,benkirk/libmesh,friedmud/libmesh,aeslaughter/libmesh,pbauman/libmesh,benkirk/libmesh,balborian/libmesh,90jrong/libmesh,BalticPinguin/libmesh,libMesh/libmesh,cahaynes/libmesh,benkirk/libmesh,hrittich/libmesh,libMesh/libmesh,coreymbryant/libmesh,jwpeterson/libmesh,90jrong/libmesh,friedmud/libmesh,dknez/libmesh,coreymbryant/libmesh,capitalaslash/libmesh,vikramvgarg/libmesh,dknez/libmesh,hrittich/libmesh,coreymbryant/libmesh,hrittich/libmesh,cahaynes/libmesh,cahaynes/libmesh,dmcdougall/libmesh,permcody/libmesh,coreymbryant/libmesh,balborian/libmesh,friedmud/libmesh,cahaynes/libmesh,svallaghe/libmesh,balborian/libmesh,aeslaughter/libmesh,capitalaslash/libmesh,coreymbryant/libmesh,dknez/libmesh,dknez/libmesh,libMesh/libmesh,BalticPinguin/libmesh,benkirk/libmesh,friedmud/libmesh,jwpeterson/libmesh,libMesh/libmesh,libMesh/libmesh,giorgiobornia/libmesh,giorgiobornia/libmesh,dknez/libmesh,dschwen/libmesh,permcody/libmesh,pbauman/libmesh,BalticPinguin/libmesh,benkirk/libmesh,balborian/libmesh,vikramvgarg/libmesh,libMesh/libmesh,dmcdougall/libmesh,capitalaslash/libmesh,coreymbryant/libmesh,hrittich/libmesh,balborian/libmesh,aeslaughter/libmesh,hrittich/libmesh,friedmud/libmesh,svallaghe/libmesh,vikramvgarg/libmesh,90jrong/libmesh,balborian/libmesh,dschwen/libmesh