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Improvements to the truth table computations.

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This commit is contained in:
Alan Mishchenko
2012-11-01 14:58:31 -07:00
parent d56570f235
commit 35c8d6a2fd
5 changed files with 40 additions and 40 deletions
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src/misc/util/utilTruth.h
+2 -10
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@@ -53,14 +53,6 @@ static word s_Truths6Neg[6] = {
0x00000000FFFFFFFF
};
static word s_CMasks6[5] = {
0x1111111111111111,
0x0303030303030303,
0x000F000F000F000F,
0x000000FF000000FF,
0x000000000000FFFF
};
static word s_PMasks[5][3] = {
{ 0x9999999999999999, 0x2222222222222222, 0x4444444444444444 },
{ 0xC3C3C3C3C3C3C3C3, 0x0C0C0C0C0C0C0C0C, 0x3030303030303030 },
@@ -299,12 +291,12 @@ static inline int Abc_Tt6Cof1IsConst0( word t, int iVar ) { return (t & s_Truths
static inline int Abc_Tt6Cof1IsConst1( word t, int iVar ) { return (t & s_Truths6[iVar]) == s_Truths6[iVar]; }
static inline int Abc_Tt6CofsOpposite( word t, int iVar ) { return ((t >> (1 << iVar)) & s_Truths6Neg[iVar]) == (~t & s_Truths6Neg[iVar]); }
static inline word Abc_Tt6Cof0( word t, int iVar )
static inline word Abc_Tt6Cofactor0( word t, int iVar )
{
assert( iVar >= 0 && iVar < 6 );
return (t &s_Truths6Neg[iVar]) | ((t &s_Truths6Neg[iVar]) << (1<<iVar));
}
static inline word Abc_Tt6Cof1( word t, int iVar )
static inline word Abc_Tt6Cofactor1( word t, int iVar )
{
assert( iVar >= 0 && iVar < 6 );
return (t & s_Truths6[iVar]) | ((t & s_Truths6[iVar]) >> (1<<iVar));