combo reduct: handle divide-by-zero cases
combo reduct: handle divide-by-zero cases

ceefour/opencog,kinoc/opencog,inflector/atomspace,Allend575/opencog,jlegendary/opencog,rohit12/atomspace,yantrabuddhi/opencog,ruiting/opencog,MarcosPividori/atomspace,williampma/opencog,Selameab/atomspace,kim135797531/opencog,Allend575/opencog,ArvinPan/atomspace,iAMr00t/opencog,tim777z/opencog,misgeatgit/atomspace,AmeBel/opencog,printedheart/atomspace,eddiemonroe/opencog,ruiting/opencog,jswiergo/atomspace,prateeksaxena2809/opencog,jswiergo/atomspace,rodsol/atomspace,kim135797531/opencog,inflector/opencog,cosmoharrigan/atomspace,Selameab/atomspace,virneo/opencog,tim777z/opencog,yantrabuddhi/opencog,jlegendary/opencog,virneo/opencog,virneo/atomspace,eddiemonroe/opencog,ArvinPan/atomspace,rTreutlein/atomspace,eddiemonroe/atomspace,prateeksaxena2809/opencog,jlegendary/opencog,tim777z/opencog,jlegendary/opencog,sanuj/opencog,shujingke/opencog,andre-senna/opencog,inflector/atomspace,ceefour/opencog,AmeBel/atomspace,rohit12/opencog,anitzkin/opencog,inflector/opencog,kim135797531/opencog,inflector/atomspace,eddiemonroe/opencog,Tiggels/opencog,ArvinPan/opencog,TheNameIsNigel/opencog,cosmoharrigan/atomspace,UIKit0/atomspace,williampma/opencog,ruiting/opencog,rTreutlein/atomspace,misgeatgit/opencog,anitzkin/opencog,rTreutlein/atomspace,roselleebarle04/opencog,williampma/opencog,rodsol/opencog,rohit12/opencog,andre-senna/opencog,yantrabuddhi/opencog,cosmoharrigan/opencog,eddiemonroe/atomspace,gaapt/opencog,misgeatgit/atomspace,AmeBel/opencog,rohit12/opencog,kinoc/opencog,Tiggels/opencog,eddiemonroe/atomspace,sanuj/opencog,cosmoharrigan/atomspace,zhaozengguang/opencog,roselleebarle04/opencog,yantrabuddhi/atomspace,sumitsourabh/opencog,printedheart/opencog,rodsol/atomspace,Selameab/opencog,shujingke/opencog,virneo/opencog,AmeBel/atomspace,ceefour/opencog,anitzkin/opencog,inflector/opencog,kim135797531/opencog,Selameab/opencog,roselleebarle04/opencog,gaapt/opencog,cosmoharrigan/atomspace,prateeksaxena2809/opencog,rTreutlein/atomspace,tim777z/opencog,prateeksaxena2809/opencog,ceefour/atomspace,kinoc/opencog,anitzkin/opencog,Allend575/opencog,williampma/atomspace,Allend575/opencog,inflector/opencog,anitzkin/opencog,printedheart/opencog,iAMr00t/opencog,sumitsourabh/opencog,cosmoharrigan/opencog,andre-senna/opencog,ArvinPan/opencog,iAMr00t/opencog,sanuj/opencog,rohit12/atomspace,Allend575/opencog,anitzkin/opencog,williampma/atomspace,printedheart/opencog,TheNameIsNigel/opencog,sanuj/opencog,gaapt/opencog,cosmoharrigan/opencog,ceefour/opencog,TheNameIsNigel/opencog,kim135797531/opencog,rohit12/opencog,UIKit0/atomspace,prateeksaxena2809/opencog,Tiggels/opencog,yantrabuddhi/atomspace,Selameab/opencog,shujingke/opencog,cosmoharrigan/opencog,kim135797531/opencog,zhaozengguang/opencog,iAMr00t/opencog,williampma/opencog,iAMr00t/opencog,TheNameIsNigel/opencog,gaapt/opencog,printedheart/atomspace,Selameab/opencog,ArvinPan/atomspace,rTreutlein/atomspace,AmeBel/opencog,misgeatgit/opencog,anitzkin/opencog,zhaozengguang/opencog,eddiemonroe/opencog,AmeBel/atomspace,inflector/opencog,misgeatgit/opencog,williampma/opencog,UIKit0/atomspace,williampma/atomspace,ceefour/atomspace,UIKit0/atomspace,gaapt/opencog,virneo/opencog,sanuj/opencog,rodsol/opencog,Tiggels/opencog,MarcosPividori/atomspace,Tiggels/opencog,zhaozengguang/opencog,kim135797531/opencog,roselleebarle04/opencog,rodsol/opencog,andre-senna/opencog,jlegendary/opencog,Selameab/opencog,misgeatgit/atomspace,jlegendary/opencog,sumitsourabh/opencog,shujingke/opencog,rodsol/atomspace,virneo/atomspace,TheNameIsNigel/opencog,kinoc/opencog,virneo/atomspace,ruiting/opencog,jswiergo/atomspace,misgeatgit/atomspace,AmeBel/atomspace,kinoc/opencog,gavrieltal/opencog,virneo/opencog,inflector/opencog,inflector/atomspace,yantrabuddhi/opencog,rohit12/atomspace,prateeksaxena2809/opencog,ceefour/opencog,ArvinPan/opencog,Allend575/opencog,cosmoharrigan/opencog,Selameab/atomspace,iAMr00t/opencog,jlegendary/opencog,rohit12/opencog,AmeBel/opencog,misgeatgit/atomspace,shujingke/opencog,eddiemonroe/opencog,ceefour/opencog,prateeksaxena2809/opencog,kinoc/opencog,zhaozengguang/opencog,andre-senna/opencog,ceefour/atomspace,printedheart/atomspace,inflector/opencog,gaapt/opencog,ruiting/opencog,gavrieltal/opencog,rodsol/opencog,misgeatgit/opencog,virneo/opencog,williampma/opencog,Allend575/opencog,ceefour/opencog,ArvinPan/opencog,eddiemonroe/opencog,gavrieltal/opencog,ruiting/opencog,rohit12/opencog,roselleebarle04/opencog,misgeatgit/opencog,gavrieltal/opencog,AmeBel/atomspace,eddiemonroe/atomspace,misgeatgit/opencog,kinoc/opencog,rodsol/atomspace,MarcosPividori/atomspace,ArvinPan/opencog,TheNameIsNigel/opencog,printedheart/opencog,Selameab/atomspace,tim777z/opencog,AmeBel/opencog,gavrieltal/opencog,misgeatgit/opencog,eddiemonroe/opencog,roselleebarle04/opencog,Tiggels/opencog,yantrabuddhi/atomspace,printedheart/atomspace,shujingke/opencog,inflector/opencog,gavrieltal/opencog,rodsol/opencog,jswiergo/atomspace,shujingke/opencog,ceefour/atomspace,ruiting/opencog,yantrabuddhi/opencog,printedheart/opencog,eddiemonroe/atomspace,zhaozengguang/opencog,AmeBel/opencog,tim777z/opencog,andre-senna/opencog,williampma/atomspace,printedheart/opencog,yantrabuddhi/atomspace,yantrabuddhi/opencog,sumitsourabh/opencog,rodsol/opencog,roselleebarle04/opencog,virneo/atomspace,gavrieltal/opencog,sanuj/opencog,Selameab/opencog,cosmoharrigan/opencog,sumitsourabh/opencog,yantrabuddhi/atomspace,inflector/atomspace,misgeatgit/opencog,ArvinPan/atomspace,andre-senna/opencog,MarcosPividori/atomspace,gaapt/opencog,ArvinPan/opencog,virneo/opencog,AmeBel/opencog,rohit12/atomspace,misgeatgit/opencog,sumitsourabh/opencog,yantrabuddhi/opencog,sumitsourabh/opencog