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CreateRandomAdderObjectNoCout.m
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CreateRandomAdderObjectNoCout.m
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function [ targetAdderObjectNoCout ] = CreateRandomAdderObjectNoCout( adderWidth, ...
servedTiming, ...
standardLogicLibrary, ...
standardLogicLibrary_CinBar_CoBar, ...
standardLogicLibrary_CinBar_Co, ...
standardLogicLibrary_Cin_CoBar, ...
standardLogicLibrary_Cin_Co)
% FUNCTION DESCRIPTION:
% Check Approximation Validity
% Check Carry Chain Validity
% Check Timing Validity
% Step 1) Variable Initialization -------------------------------------
N = adderWidth;
K = servedTiming;
targetAdderObjectNoCout = cell(1, N);
PreviousCarryOut = 0;
CarryChainLength = 1;
tempCarryChainLength = 1;
CinBar_CoBar = size(standardLogicLibrary_CinBar_CoBar, 1);
CinBar_Co = size(standardLogicLibrary_CinBar_Co, 1);
Cin_CoBar = size(standardLogicLibrary_Cin_CoBar, 1);
Cin_Co = size(standardLogicLibrary_Cin_Co, 1);
% Step 1) END ---------------------------------------------------------
% Step 2) N-bit Adder Object Generator --------------------------------
% 2.1) First Stage ----------------------------------------------------
% Phase 1 : Selection
if (tempCarryChainLength == K) % Then this stage cannot generate Cout
FirstStage = randi( (CinBar_CoBar), 1, 1 );
targetAdderObjectNoCout{1} = standardLogicLibrary_CinBar_CoBar{FirstStage};
tempCarryChainLength = 1;
PreviousCarryOut = 0;
else % CarryChainLength < K. So it can generate Cout or not
FirstStage = randi( (CinBar_Co + CinBar_CoBar), 1, 1 );
if (FirstStage > CinBar_Co) % then choose from CinBar_CoBar
FirstStage = FirstStage - CinBar_Co;
targetAdderObjectNoCout{1} = standardLogicLibrary_CinBar_CoBar{FirstStage};
tempCarryChainLength = 1;
PreviousCarryOut = 0;
else % then choose from CinBar_Co
targetAdderObjectNoCout{1} = standardLogicLibrary_CinBar_Co{FirstStage};
tempCarryChainLength = tempCarryChainLength + 1;
PreviousCarryOut = 1;
end
end
% Phase 2 : Carry Chain Update
if (tempCarryChainLength > CarryChainLength)
CarryChainLength = tempCarryChainLength;
end
% 2.1) END-------------------------------------------------------------
% 2.2) Second Stage to (N)th Stage ----------------------------------
for i = 2 : N
if (i == N) % Should Not Have COUT!!!
if (PreviousCarryOut == 0) % then choose from CinBar_CoBar
IthStage = randi(CinBar_CoBar, 1, 1 );
targetAdderObjectNoCout{i} = standardLogicLibrary_CinBar_CoBar{IthStage};
else % then choose from Cin_CoBar
IthStage = randi(Cin_CoBar, 1, 1 );
targetAdderObjectNoCout{i} = standardLogicLibrary_Cin_CoBar{IthStage};
end
if (tempCarryChainLength > CarryChainLength)
CarryChainLength = tempCarryChainLength;
end
else
if (tempCarryChainLength == K) % Then this stage cannot generate Cout
% Selection
if (PreviousCarryOut == 0) % Then choose from CinBar_CoBar
IthStage = randi(CinBar_CoBar, 1, 1 );
targetAdderObjectNoCout{i} = standardLogicLibrary_CinBar_CoBar{IthStage};
tempCarryChainLength = 1;
PreviousCarryOut = 0;
else % Then Choose from Cin_CoBar
IthStage = randi(Cin_CoBar, 1, 1 );
targetAdderObjectNoCout{i} = standardLogicLibrary_Cin_CoBar{IthStage};
tempCarryChainLength = 1;
PreviousCarryOut = 0;
end
% Carry Chain Update
if (tempCarryChainLength > CarryChainLength)
CarryChainLength = tempCarryChainLength;
end
else % CarryChainLength < K. So it can generate Cout or not
% Selection
if (PreviousCarryOut == 0) % Then choose from CinBar
IthStage = randi((CinBar_Co + CinBar_CoBar), 1, 1);
if (IthStage > CinBar_Co) % then choose from CinBar_CoBar
IthStage = IthStage - CinBar_Co;
targetAdderObjectNoCout{i} = standardLogicLibrary_CinBar_CoBar{IthStage};
tempCarryChainLength = 1;
PreviousCarryOut = 0;
else % then choose from CinBar_Co
targetAdderObjectNoCout{i} = standardLogicLibrary_CinBar_Co{IthStage};
tempCarryChainLength = tempCarryChainLength + 1;
PreviousCarryOut = 1;
end
else % Then choose from Cin
IthStage = randi((Cin_Co + Cin_CoBar), 1, 1);
if (IthStage > Cin_Co) % then choose from Cin_CoBar
IthStage = IthStage - Cin_Co;
targetAdderObjectNoCout{i} = standardLogicLibrary_Cin_CoBar{IthStage};
tempCarryChainLength = 1;
PreviousCarryOut = 0;
else % then choose from Cin_Co
targetAdderObjectNoCout{i} = standardLogicLibrary_Cin_Co{IthStage};
tempCarryChainLength = tempCarryChainLength + 1;
PreviousCarryOut = 1;
end
end
% Carry Chain Update
if (tempCarryChainLength > CarryChainLength)
CarryChainLength = tempCarryChainLength;
end
end
end
end % end of for
% 2.2) END ------------------------------------------------------------
% 2.3) Last Stage -----------------------------------------------------
% 2.3) END ------------------------------------------------------------
% Step 2) END ---------------------------------------------------------
end