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Diffstat (limited to 'src/temp/aig/aigTable.c')
| -rw-r--r-- | src/temp/aig/aigTable.c | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/src/temp/aig/aigTable.c b/src/temp/aig/aigTable.c deleted file mode 100644 index 338faa45..00000000 --- a/src/temp/aig/aigTable.c +++ /dev/null @@ -1,266 +0,0 @@ -/**CFile**************************************************************** - - FileName [aigTable.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Minimalistic And-Inverter Graph package.] - - Synopsis [Structural hashing table.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - May 11, 2006. ] - - Revision [$Id: aigTable.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "aig.h" - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -// hashing the node -static unsigned long Aig_Hash( Aig_Obj_t * pObj, int TableSize ) -{ - unsigned long Key = Aig_ObjIsExor(pObj) * 1699; - Key ^= (long)Aig_ObjFanin0(pObj) * 7937; - Key ^= (long)Aig_ObjFanin1(pObj) * 2971; - Key ^= Aig_ObjFaninC0(pObj) * 911; - Key ^= Aig_ObjFaninC1(pObj) * 353; - return Key % TableSize; -} - -// returns the place where this node is stored (or should be stored) -static Aig_Obj_t ** Aig_TableFind( Aig_Man_t * p, Aig_Obj_t * pObj ) -{ - int i; - assert( Aig_ObjChild0(pObj) && Aig_ObjChild1(pObj) ); - assert( Aig_ObjChild0(pObj) < Aig_ObjChild1(pObj) ); - for ( i = Aig_Hash(pObj, p->nTableSize); p->pTable[i]; i = (i+1) % p->nTableSize ) - if ( p->pTable[i] == pObj ) - break; - return p->pTable + i; -} - -static void Aig_TableResize( Aig_Man_t * p ); -static unsigned int Cudd_PrimeAig( unsigned int p ); - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Checks if node with the given attributes is in the hash table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_TableLookup( Aig_Man_t * p, Aig_Obj_t * pGhost ) -{ - int i; - assert( !Aig_IsComplement(pGhost) ); - assert( Aig_ObjChild0(pGhost) && Aig_ObjChild1(pGhost) ); - assert( Aig_ObjChild0(pGhost) < Aig_ObjChild1(pGhost) ); - if ( p->fRefCount && (!Aig_ObjRefs(Aig_ObjFanin0(pGhost)) || !Aig_ObjRefs(Aig_ObjFanin1(pGhost))) ) - return NULL; - for ( i = Aig_Hash(pGhost, p->nTableSize); p->pTable[i]; i = (i+1) % p->nTableSize ) - { - if ( Aig_ObjChild0(p->pTable[i]) == Aig_ObjChild0(pGhost) && - Aig_ObjChild1(p->pTable[i]) == Aig_ObjChild1(pGhost) && - Aig_ObjType(p->pTable[i]) == Aig_ObjType(pGhost) ) - return p->pTable[i]; - } - return NULL; -} - -/**Function************************************************************* - - Synopsis [Adds the new node to the hash table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Aig_TableInsert( Aig_Man_t * p, Aig_Obj_t * pObj ) -{ - Aig_Obj_t ** ppPlace; - assert( !Aig_IsComplement(pObj) ); - assert( Aig_TableLookup(p, pObj) == NULL ); - if ( p->nTableSize < 2 * Aig_ManNodeNum(p) ) - Aig_TableResize( p ); - ppPlace = Aig_TableFind( p, pObj ); - assert( *ppPlace == NULL ); - *ppPlace = pObj; -} - -/**Function************************************************************* - - Synopsis [Deletes the node from the hash table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Aig_TableDelete( Aig_Man_t * p, Aig_Obj_t * pObj ) -{ - Aig_Obj_t * pEntry, ** ppPlace; - int i; - assert( !Aig_IsComplement(pObj) ); - ppPlace = Aig_TableFind( p, pObj ); - assert( *ppPlace == pObj ); // node should be in the table - *ppPlace = NULL; - // rehash the adjacent entries - i = ppPlace - p->pTable; - for ( i = (i+1) % p->nTableSize; p->pTable[i]; i = (i+1) % p->nTableSize ) - { - pEntry = p->pTable[i]; - p->pTable[i] = 0; - Aig_TableInsert( p, pEntry ); - } -} - -/**Function************************************************************* - - Synopsis [Count the number of nodes in the table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Aig_TableCountEntries( Aig_Man_t * p ) -{ - int i, Counter = 0; - for ( i = 0; i < p->nTableSize; i++ ) - Counter += (p->pTable[i] != NULL); - return Counter; -} - -/**Function************************************************************* - - Synopsis [Resizes the table.] - - Description [Typically this procedure should not be called.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Aig_TableResize( Aig_Man_t * p ) -{ - Aig_Obj_t ** pTableOld, ** ppPlace; - int nTableSizeOld, Counter, nEntries, e, clk; -clk = clock(); - // save the old table - pTableOld = p->pTable; - nTableSizeOld = p->nTableSize; - // get the new table - p->nTableSize = Cudd_PrimeAig( 5 * Aig_ManNodeNum(p) ); - p->pTable = ALLOC( Aig_Obj_t *, p->nTableSize ); - memset( p->pTable, 0, sizeof(Aig_Obj_t *) * p->nTableSize ); - // rehash the entries from the old table - Counter = 0; - for ( e = 0; e < nTableSizeOld; e++ ) - { - if ( pTableOld[e] == 0 ) - continue; - Counter++; - // get the place where this entry goes in the table table - ppPlace = Aig_TableFind( p, pTableOld[e] ); - assert( *ppPlace == NULL ); // should not be in the table - *ppPlace = pTableOld[e]; - } - nEntries = Aig_ManNodeNum(p); -// assert( Counter == nEntries ); -// printf( "Increasing the structural table size from %6d to %6d. ", nTableSizeOld, p->nTableSize ); -// PRT( "Time", clock() - clk ); - // replace the table and the parameters - free( pTableOld ); -} - -/**Function******************************************************************** - - Synopsis [Profiles the hash table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -******************************************************************************/ -void Aig_TableProfile( Aig_Man_t * p ) -{ - int i, Counter = 0; - for ( i = 0; i < p->nTableSize; i++ ) - { - if ( p->pTable[i] ) - Counter++; - else if ( Counter ) - { - printf( "%d ", Counter ); - Counter = 0; - } - } -} - -/**Function******************************************************************** - - Synopsis [Returns the next prime >= p.] - - Description [Copied from CUDD, for stand-aloneness.] - - SideEffects [None] - - SeeAlso [] - -******************************************************************************/ -unsigned int Cudd_PrimeAig( unsigned int p) -{ - int i,pn; - - p--; - do { - p++; - if (p&1) { - pn = 1; - i = 3; - while ((unsigned) (i * i) <= p) { - if (p % i == 0) { - pn = 0; - break; - } - i += 2; - } - } else { - pn = 0; - } - } while (!pn); - return(p); - -} /* end of Cudd_Prime */ - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - |