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Code Issues Releases Wiki Activity

Unify set_factors()

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This is needed for future work.
This commit is contained in:
Marco Costalba 2016-04-29 07:14:42 +02:00
parent 8ed3859aad
commit 7a600ed986
1 changed files with 18 additions and 22 deletions
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40
src/syzygy/tbprobe.cpp
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@ -83,6 +83,8 @@ struct WDLEntry {
uint8_t has_pawns;
union {
struct {
typedef int Piece;
uint8_t hasUniquePieces;
PairsData* precomp;
int factor[TBPIECES];
@ -93,6 +95,8 @@ struct WDLEntry {
struct {
uint8_t pawns[2];
struct {
typedef int Pawn;
PairsData* precomp;
int factor[TBPIECES];
uint8_t pieces[TBPIECES];
@ -117,6 +121,8 @@ struct DTZEntry {
uint8_t has_pawns;
union {
struct {
typedef int Piece;
uint8_t hasUniquePieces;
PairsData* precomp;
int factor[TBPIECES];
@ -130,6 +136,8 @@ struct DTZEntry {
struct {
uint8_t pawns[2];
struct {
typedef int Pawn;
PairsData* precomp;
int factor[TBPIECES];
uint8_t pieces[TBPIECES];
@ -751,32 +759,20 @@ uint64_t encode_pawn(uint8_t pawns[], uint8_t *norm, Square *pos, int *factor, i
}
template<typename T>
uint64_t set_factors(T& p, int num, int order)
{
int n = 64 - p.norm[0];
uint64_t result = 1;
for (int i = p.norm[0], k = 0; i < num || k == order; ++k) {
if (k == order) {
p.factor[0] = (int)result;
result *= p.hasUniquePieces ? 31332 : 462;
} else {
p.factor[i] = (int)result;
result *= Binomial[p.norm[i]][n];
n -= p.norm[i];
i += p.norm[i];
}
}
return result;
}
int get_pfactor(const T& p, File, typename T::Piece = 0)
{ return p.hasUniquePieces ? 31332 : 462; }
template<typename T>
uint64_t set_factors(T& p, int num, int order, int order2, File f)
int get_pfactor(const T& p, File f, typename T::Pawn = 0)
{ return Pfactor[p.norm[0] - 1][f]; }
template<typename T>
uint64_t set_factors(T& p, int num, int order, int order2 = 0xF, File f = FILE_A)
{
int i = p.norm[0];
if (order2 < 0x0F)
if (order2 < 0xF)
i += p.norm[i];
int n = 64 - i;
@ -785,7 +781,7 @@ uint64_t set_factors(T& p, int num, int order, int order2, File f)
for (int k = 0; i < num || k == order || k == order2; ++k) {
if (k == order) {
p.factor[0] = (int)result;
result *= Pfactor[p.norm[0] - 1][f];
result *= get_pfactor(p, f);
} else if (k == order2) {
p.factor[p.norm[0]] = (int)result;
result *= Binomial[p.norm[p.norm[0]]][48 - p.norm[0]];