circt::NPNTable Class Reference

Precomputed NPN canonicalization table for 4-input single-output functions. More...

#include <TruthTable.h>

Collaboration diagram for circt::NPNTable:

Classes
struct	Entry4

Public Member Functions
	NPNTable ()
bool	lookup (const BinaryTruthTable &tt, NPNClass &result) const
	Returns false if the given truth table shape is unsupported.

Private Attributes
std::array< Entry4, 1u<< 16 >	entries4

Detailed Description

Precomputed NPN canonicalization table for 4-input single-output functions.

Definition at line 168 of file TruthTable.h.

Constructor & Destructor Documentation

NPNTable()

NPNTable::NPNTable

(

)

Definition at line 400 of file TruthTable.cpp.

References assert(), circt::collectCanonicalNPN4Representatives(), entries4, circt::NPNTable::Entry4::inputNegation, circt::NPNTable::Entry4::inputPermutation, circt::NPNTable::Entry4::outputNegation, and circt::NPNTable::Entry4::representative.

Member Function Documentation

lookup()

bool NPNTable::lookup	(	const BinaryTruthTable &	tt,
		NPNClass &	result
	)		const

Returns false if the given truth table shape is unsupported.

Definition at line 443 of file TruthTable.cpp.

References entries4, circt::BinaryTruthTable::numInputs, circt::BinaryTruthTable::numOutputs, and circt::BinaryTruthTable::table.

Referenced by circt::synth::Cut::getNPNClass().

Member Data Documentation

entries4

std::array<Entry4, 1u << 16> circt::NPNTable::entries4

private

Definition at line 183 of file TruthTable.h.

Referenced by lookup(), and NPNTable().

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The documentation for this class was generated from the following files:

• /home/runner/work/circt-www/circt-www/circt_src/include/circt/Support/TruthTable.h
• /home/runner/work/circt-www/circt-www/circt_src/lib/Support/TruthTable.cpp