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75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
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typedef char GBT_NUMKEY;
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/* Better readable key */
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typedef struct
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{
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const GBT_NUMKEY *lower,
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*upper;
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} GBT_NUMKEY_R;
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/* for sorting */
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typedef struct
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{
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int i;
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GBT_NUMKEY *t;
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} Nsrt;
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/* type description */
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typedef struct
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{
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/* Attribs */
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enum gbtree_type t; /* data type */
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int32 size; /* size of type , 0 means variable */
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/* Methods */
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bool (*f_gt) (const void *, const void *); /* greater then */
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bool (*f_ge) (const void *, const void *); /* greater equal */
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bool (*f_eq) (const void *, const void *); /* equal */
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bool (*f_le) (const void *, const void *); /* less equal */
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bool (*f_lt) (const void *, const void *); /* less then */
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int (*f_cmp) (const void *, const void *); /* key compare function */
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} gbtree_ninfo;
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/*
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* Numeric btree functions
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*/
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#define penalty_range_enlarge(olower,oupper,nlower,nupper) do { \
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res = 0; \
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if ( (nupper) > (oupper) ) \
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res += ( (nupper) - (oupper) ); \
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if ( (olower) > (nlower) ) \
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res += ( (olower) - (nlower) ); \
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} while (0);
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extern bool gbt_num_consistent(const GBT_NUMKEY_R * key, const void *query,
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const StrategyNumber *strategy, bool is_leaf,
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const gbtree_ninfo * tinfo);
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extern GIST_SPLITVEC *gbt_num_picksplit(const GistEntryVector *entryvec, GIST_SPLITVEC *v,
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const gbtree_ninfo * tinfo);
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extern GISTENTRY *gbt_num_compress(GISTENTRY *retval, GISTENTRY *entry,
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const gbtree_ninfo * tinfo);
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extern void *gbt_num_union(GBT_NUMKEY * out, const GistEntryVector *entryvec,
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const gbtree_ninfo * tinfo);
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extern bool gbt_num_same(const GBT_NUMKEY * a, const GBT_NUMKEY * b,
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const gbtree_ninfo * tinfo);
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extern void gbt_num_bin_union(Datum *u, GBT_NUMKEY * e,
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const gbtree_ninfo * tinfo);
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