/*-------------------------------------------------------------------------
 *
 * index_selfuncs.h
 *   Index cost estimation functions for standard index access methods.
 *
 *
 * Note: this is split out of selfuncs.h mainly to avoid importing all of the
 * planner's data structures into the non-planner parts of the index AMs.
 * If you make it depend on anything besides access/amapi.h, that's likely
 * a mistake.
 *
 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/utils/index_selfuncs.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef INDEX_SELFUNCS_H
#define INDEX_SELFUNCS_H

#include "access/amapi.h"

/* Functions in selfuncs.c */
extern void brincostestimate(struct PlannerInfo *root,
        struct IndexPath *path,
        double loop_count,
        Cost *indexStartupCost,
        Cost *indexTotalCost,
        Selectivity *indexSelectivity,
        double *indexCorrelation,
        double *indexPages);
extern void btcostestimate(struct PlannerInfo *root,
         struct IndexPath *path,
         double loop_count,
         Cost *indexStartupCost,
         Cost *indexTotalCost,
         Selectivity *indexSelectivity,
         double *indexCorrelation,
         double *indexPages);
extern void hashcostestimate(struct PlannerInfo *root,
        struct IndexPath *path,
        double loop_count,
        Cost *indexStartupCost,
        Cost *indexTotalCost,
        Selectivity *indexSelectivity,
        double *indexCorrelation,
        double *indexPages);
extern void gistcostestimate(struct PlannerInfo *root,
        struct IndexPath *path,
        double loop_count,
        Cost *indexStartupCost,
        Cost *indexTotalCost,
        Selectivity *indexSelectivity,
        double *indexCorrelation,
        double *indexPages);
extern void spgcostestimate(struct PlannerInfo *root,
       struct IndexPath *path,
       double loop_count,
       Cost *indexStartupCost,
       Cost *indexTotalCost,
       Selectivity *indexSelectivity,
       double *indexCorrelation,
       double *indexPages);
extern void gincostestimate(struct PlannerInfo *root,
       struct IndexPath *path,
       double loop_count,
       Cost *indexStartupCost,
       Cost *indexTotalCost,
       Selectivity *indexSelectivity,
       double *indexCorrelation,
       double *indexPages);

#endif       /* INDEX_SELFUNCS_H */