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63 lines
1.9 KiB
C
63 lines
1.9 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, * 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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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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