#ifdef to allow benchmarking C version of richards.
#ifdef to allow benchmarking C version of richards.

Swift SVN r21127

slavapestov/swift,kperryua/swift,gmilos/swift,gottesmm/swift,airspeedswift/swift,tkremenek/swift,LeoShimonaka/swift,amraboelela/swift,return/swift,jtbandes/swift,lorentey/swift,alblue/swift,kusl/swift,bitjammer/swift,benlangmuir/swift,OscarSwanros/swift,russbishop/swift,calebd/swift,SwiftAndroid/swift,OscarSwanros/swift,hughbe/swift,gribozavr/swift,natecook1000/swift,natecook1000/swift,arvedviehweger/swift,arvedviehweger/swift,mightydeveloper/swift,cbrentharris/swift,codestergit/swift,CodaFi/swift,sdulal/swift,calebd/swift,devincoughlin/swift,brentdax/swift,cbrentharris/swift,apple/swift,parkera/swift,milseman/swift,swiftix/swift.old,hughbe/swift,cbrentharris/swift,karwa/swift,benlangmuir/swift,roambotics/swift,manavgabhawala/swift,IngmarStein/swift,gottesmm/swift,airspeedswift/swift,KrishMunot/swift,alblue/swift,deyton/swift,ahoppen/swift,airspeedswift/swift,danielmartin/swift,codestergit/swift,SwiftAndroid/swift,glessard/swift,JaSpa/swift,jopamer/swift,deyton/swift,emilstahl/swift,zisko/swift,calebd/swift,frootloops/swift,kperryua/swift,therealbnut/swift,uasys/swift,codestergit/swift,tardieu/swift,johnno1962d/swift,mightydeveloper/swift,atrick/swift,hughbe/swift,shajrawi/swift,kentya6/swift,hooman/swift,kstaring/swift,SwiftAndroid/swift,Ivacker/swift,swiftix/swift,alblue/swift,natecook1000/swift,jtbandes/swift,brentdax/swift,hooman/swift,tinysun212/swift-windows,felix91gr/swift,natecook1000/swift,rudkx/swift,gottesmm/swift,slavapestov/swift,swiftix/swift,swiftix/swift.old,harlanhaskins/swift,huonw/swift,huonw/swift,austinzheng/swift,parkera/swift,return/swift,kentya6/swift,karwa/swift,arvedviehweger/swift,cbrentharris/swift,jckarter/swift,CodaFi/swift,tkremenek/swift,ahoppen/swift,frootloops/swift,frootloops/swift,sschiau/swift,jtbandes/swift,MukeshKumarS/Swift,tjw/swift,bitjammer/swift,aschwaighofer/swift,huonw/swift,shajrawi/swift,austinzheng/swift,natecook1000/swift,mightydeveloper/swift,zisko/swift,hooman/swift,gottesmm/swift,Jnosh/swift,ben-ng/swift,felix91gr/swift,gregomni/swift,russbishop/swift,dduan/swift,lorentey/swift,kstaring/swift,sschiau/swift,allevato/swift,kusl/swift,practicalswift/swift,gregomni/swift,jckarter/swift,roambotics/swift,uasys/swift,huonw/swift,shajrawi/swift,khizkhiz/swift,adrfer/swift,ken0nek/swift,jmgc/swift,milseman/swift,JaSpa/swift,austinzheng/swift,JaSpa/swift,manavgabhawala/swift,return/swift,aschwaighofer/swift,kstaring/swift,ken0nek/swift,sschiau/swift,shahmishal/swift,therealbnut/swift,return/swift,airspeedswift/swift,xwu/swift,JaSpa/swift,gottesmm/swift,MukeshKumarS/Swift,mightydeveloper/swift,shahmishal/swift,shajrawi/swift,amraboelela/swift,gribozavr/swift,JGiola/swift,tjw/swift,jmgc/swift,arvedviehweger/swift,glessard/swift,nathawes/swift,milseman/swift,jmgc/swift,KrishMunot/swift,gottesmm/swift,huonw/swift,tjw/swift,xedin/swift,tinysun212/swift-windows,return/swift,Jnosh/swift,atrick/swift,frootloops/swift,rudkx/swift,jckarter/swift,Ivacker/swift,devincoughlin/swift,parkera/swift,cbrentharris/swift,sschiau/swift,KrishMunot/swift,bitjammer/swift,modocache/swift,cbrentharris/swift,manavgabhawala/swift,felix91gr/swift,kperryua/swift,lorentey/swift,djwbrown/swift,karwa/swift,felix91gr/swift,ken0nek/swift,glessard/swift,russbishop/swift,russbishop/swift,tkremenek/swift,brentdax/swift,gribozavr/swift,alblue/swift,austinzheng/swift,khizkhiz/swift,manavgabhawala/swift,stephentyrone/swift,gmilos/swift,kentya6/swift,tjw/swift,hooman/swift,apple/swift,gmilos/swift,tjw/swift,uasys/swift,jtbandes/swift,ben-ng/swift,gmilos/swift,milseman/swift,khizkhiz/swift,shajrawi/swift,allevato/swift,hughbe/swift,stephentyrone/swift,djwbrown/swift,JaSpa/swift,jopamer/swift,atrick/swift,modocache/swift,dreamsxin/swift,arvedviehweger/swift,emilstahl/swift,stephentyrone/swift,MukeshKumarS/Swift,calebd/swift,shahmishal/swift,danielmartin/swift,jtbandes/swift,amraboelela/swift,OscarSwanros/swift,xedin/swift,JaSpa/swift,amraboelela/swift,apple/swift,Ivacker/swift,LeoShimonaka/swift,allevato/swift,arvedviehweger/swift,brentdax/swift,slavapestov/swift,zisko/swift,brentdax/swift,johnno1962d/swift,xwu/swift,alblue/swift,xedin/swift,parkera/swift,shajrawi/swift,harlanhaskins/swift,Ivacker/swift,rudkx/swift,gribozavr/swift,gregomni/swift,aschwaighofer/swift,zisko/swift,IngmarStein/swift,alblue/swift,sschiau/swift,natecook1000/swift,tardieu/swift,practicalswift/swift,JaSpa/swift,Jnosh/swift,xwu/swift,return/swift,dreamsxin/swift,Jnosh/swift,devincoughlin/swift,LeoShimonaka/swift,harlanhaskins/swift,roambotics/swift,uasys/swift,nathawes/swift,milseman/swift,JGiola/swift,jtbandes/swift,uasys/swift,JGiola/swift,sdulal/swift,KrishMunot/swift,airspeedswift/swift,adrfer/swift,deyton/swift,Jnosh/swift,xedin/swift,mightydeveloper/swift,swiftix/swift.old,danielmartin/swift,emilstahl/swift,russbishop/swift,emilstahl/swift,milseman/swift,nathawes/swift,codestergit/swift,practicalswift/swift,gribozavr/swift,tinysun212/swift-windows,modocache/swift,therealbnut/swift,djwbrown/swift,dduan/swift,jtbandes/swift,adrfer/swift,kusl/swift,OscarSwanros/swift,calebd/swift,jmgc/swift,shahmishal/swift,aschwaighofer/swift,OscarSwanros/swift,apple/swift,return/swift,ben-ng/swift,tinysun212/swift-windows,sschiau/swift,therealbnut/swift,shajrawi/swift,devincoughlin/swift,swiftix/swift.old,IngmarStein/swift,kperryua/swift,kstaring/swift,MukeshKumarS/Swift,lorentey/swift,ken0nek/swift,sschiau/swift,therealbnut/swift,atrick/swift,kusl/swift,gottesmm/swift,roambotics/swift,glessard/swift,devincoughlin/swift,ben-ng/swift,lorentey/swift,codestergit/swift,dduan/swift,stephentyrone/swift,kentya6/swift,stephentyrone/swift,kusl/swift,brentdax/swift,deyton/swift,djwbrown/swift,felix91gr/swift,kusl/swift,deyton/swift,practicalswift/swift,devincoughlin/swift,practicalswift/swift,tardieu/swift,calebd/swift,bitjammer/swift,frootloops/swift,kperryua/swift,russbishop/swift,huonw/swift,devincoughlin/swift,gmilos/swift,mightydeveloper/swift,adrfer/swift,mightydeveloper/swift,hughbe/swift,khizkhiz/swift,therealbnut/swift,SwiftAndroid/swift,hughbe/swift,shahmishal/swift,sdulal/swift,ahoppen/swift,johnno1962d/swift,sschiau/swift,swiftix/swift.old,johnno1962d/swift,kentya6/swift,benlangmuir/swift,tardieu/swift,IngmarStein/swift,brentdax/swift,swiftix/swift,djwbrown/swift,arvedviehweger/swift,shahmishal/swift,xwu/swift,sdulal/swift,IngmarStein/swift,Ivacker/swift,CodaFi/swift,hughbe/swift,gregomni/swift,allevato/swift,aschwaighofer/swift,benlangmuir/swift,tinysun212/swift-windows,harlanhaskins/swift,gregomni/swift,frootloops/swift,Ivacker/swift,frootloops/swift,practicalswift/swift,dduan/swift,harlanhaskins/swift,dduan/swift,allevato/swift,ken0nek/swift,zisko/swift,gribozavr/swift,amraboelela/swift,harlanhaskins/swift,airspeedswift/swift,OscarSwanros/swift,swiftix/swift.old,bitjammer/swift,austinzheng/swift,Ivacker/swift,russbishop/swift,deyton/swift,SwiftAndroid/swift,khizkhiz/swift,rudkx/swift,modocache/swift,aschwaighofer/swift,manavgabhawala/swift,OscarSwanros/swift,slavapestov/swift,emilstahl/swift,danielmartin/swift,karwa/swift,tjw/swift,glessard/swift,bitjammer/swift,JGiola/swift,slavapestov/swift,roambotics/swift,emilstahl/swift,kusl/swift,allevato/swift,jmgc/swift,kstaring/swift,cbrentharris/swift,jopamer/swift,johnno1962d/swift,CodaFi/swift,danielmartin/swift,codestergit/swift,xwu/swift,tkremenek/swift,modocache/swift,xedin/swift,gmilos/swift,zisko/swift,atrick/swift,kperryua/swift,khizkhiz/swift,tkremenek/swift,LeoShimonaka/swift,swiftix/swift,slavapestov/swift,jopamer/swift,tkremenek/swift,parkera/swift,huonw/swift,slavapestov/swift,tardieu/swift,glessard/swift,mightydeveloper/swift,dduan/swift,apple/swift,practicalswift/swift,ben-ng/swift,IngmarStein/swift,deyton/swift,adrfer/swift,stephentyrone/swift,stephentyrone/swift,JGiola/swift,sdulal/swift,lorentey/swift,lorentey/swift,khizkhiz/swift,swiftix/swift,swiftix/swift.old,zisko/swift,codestergit/swift,roambotics/swift,karwa/swift,IngmarStein/swift,nathawes/swift,amraboelela/swift,kperryua/swift,LeoShimonaka/swift,parkera/swift,CodaFi/swift,johnno1962d/swift,CodaFi/swift,karwa/swift,gribozavr/swift,tinysun212/swift-windows,MukeshKumarS/Swift,jmgc/swift,Ivacker/swift,modocache/swift,milseman/swift,xedin/swift,ahoppen/swift,jckarter/swift,atrick/swift,tinysun212/swift-windows,lorentey/swift,ahoppen/swift,kstaring/swift,felix91gr/swift,jopamer/swift,tardieu/swift,Jnosh/swift,practicalswift/swift,tardieu/swift,xedin/swift,airspeedswift/swift,KrishMunot/swift,shahmishal/swift,swiftix/swift,rudkx/swift,adrfer/swift,KrishMunot/swift,JGiola/swift,harlanhaskins/swift,MukeshKumarS/Swift,devincoughlin/swift,parkera/swift,allevato/swift,therealbnut/swift,CodaFi/swift,ken0nek/swift,uasys/swift,johnno1962d/swift,karwa/swift,kentya6/swift,SwiftAndroid/swift,jckarter/swift,xwu/swift,natecook1000/swift,alblue/swift,shajrawi/swift,jckarter/swift,LeoShimonaka/swift,jopamer/swift,apple/swift,nathawes/swift,modocache/swift,parkera/swift,jckarter/swift,sdulal/swift,nathawes/swift,benlangmuir/swift,xedin/swift,shahmishal/swift,sdulal/swift,manavgabhawala/swift,danielmartin/swift,gribozavr/swift,kentya6/swift,xwu/swift,KrishMunot/swift,djwbrown/swift,tkremenek/swift,manavgabhawala/swift,hooman/swift,hooman/swift,nathawes/swift,sdulal/swift,danielmartin/swift,ahoppen/swift,LeoShimonaka/swift,kentya6/swift,adrfer/swift,amraboelela/swift,kstaring/swift,rudkx/swift,MukeshKumarS/Swift,felix91gr/swift,benlangmuir/swift,uasys/swift,bitjammer/swift,gmilos/swift,dduan/swift,aschwaighofer/swift,austinzheng/swift,emilstahl/swift,ben-ng/swift,jmgc/swift,djwbrown/swift,karwa/swift,kusl/swift,emilstahl/swift,SwiftAndroid/swift,swiftix/swift.old,hooman/swift,gregomni/swift,tjw/swift,cbrentharris/swift,swiftix/swift,LeoShimonaka/swift,ken0nek/swift,Jnosh/swift,austinzheng/swift,calebd/swift,jopamer/swift,ben-ng/swift