postgresql/contrib/btree_gist/btree_float4.c
Peter Eisentraut e7128e8dbb Create function prototype as part of PG_FUNCTION_INFO_V1 macro
Because of gcc -Wmissing-prototypes, all functions in dynamically
loadable modules must have a separate prototype declaration.  This is
meant to detect global functions that are not declared in header files,
but in cases where the function is called via dfmgr, this is redundant.
Besides filling up space with boilerplate, this is a frequent source of
compiler warnings in extension modules.

We can fix that by creating the function prototype as part of the
PG_FUNCTION_INFO_V1 macro, which such modules have to use anyway.  That
makes the code of modules cleaner, because there is one less place where
the entry points have to be listed, and creates an additional check that
functions have the right prototype.

Remove now redundant prototypes from contrib and other modules.
2014-04-18 00:03:19 -04:00

207 lines
4.5 KiB
C

/*
* contrib/btree_gist/btree_float4.c
*/
#include "postgres.h"
#include "btree_gist.h"
#include "btree_utils_num.h"
typedef struct float4key
{
float4 lower;
float4 upper;
} float4KEY;
/*
** float4 ops
*/
PG_FUNCTION_INFO_V1(gbt_float4_compress);
PG_FUNCTION_INFO_V1(gbt_float4_union);
PG_FUNCTION_INFO_V1(gbt_float4_picksplit);
PG_FUNCTION_INFO_V1(gbt_float4_consistent);
PG_FUNCTION_INFO_V1(gbt_float4_distance);
PG_FUNCTION_INFO_V1(gbt_float4_penalty);
PG_FUNCTION_INFO_V1(gbt_float4_same);
static bool
gbt_float4gt(const void *a, const void *b)
{
return (*((const float4 *) a) > *((const float4 *) b));
}
static bool
gbt_float4ge(const void *a, const void *b)
{
return (*((const float4 *) a) >= *((const float4 *) b));
}
static bool
gbt_float4eq(const void *a, const void *b)
{
return (*((const float4 *) a) == *((const float4 *) b));
}
static bool
gbt_float4le(const void *a, const void *b)
{
return (*((const float4 *) a) <= *((const float4 *) b));
}
static bool
gbt_float4lt(const void *a, const void *b)
{
return (*((const float4 *) a) < *((const float4 *) b));
}
static int
gbt_float4key_cmp(const void *a, const void *b)
{
float4KEY *ia = (float4KEY *) (((const Nsrt *) a)->t);
float4KEY *ib = (float4KEY *) (((const Nsrt *) b)->t);
if (ia->lower == ib->lower)
{
if (ia->upper == ib->upper)
return 0;
return (ia->upper > ib->upper) ? 1 : -1;
}
return (ia->lower > ib->lower) ? 1 : -1;
}
static float8
gbt_float4_dist(const void *a, const void *b)
{
return GET_FLOAT_DISTANCE(float4, a, b);
}
static const gbtree_ninfo tinfo =
{
gbt_t_float4,
sizeof(float4),
gbt_float4gt,
gbt_float4ge,
gbt_float4eq,
gbt_float4le,
gbt_float4lt,
gbt_float4key_cmp,
gbt_float4_dist
};
PG_FUNCTION_INFO_V1(float4_dist);
Datum
float4_dist(PG_FUNCTION_ARGS)
{
float4 a = PG_GETARG_FLOAT4(0);
float4 b = PG_GETARG_FLOAT4(1);
float4 r;
r = a - b;
CHECKFLOATVAL(r, isinf(a) || isinf(b), true);
PG_RETURN_FLOAT4(Abs(r));
}
/**************************************************
* float4 ops
**************************************************/
Datum
gbt_float4_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *retval = NULL;
PG_RETURN_POINTER(gbt_num_compress(retval, entry, &tinfo));
}
Datum
gbt_float4_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
float4 query = PG_GETARG_FLOAT4(1);
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
/* Oid subtype = PG_GETARG_OID(3); */
bool *recheck = (bool *) PG_GETARG_POINTER(4);
float4KEY *kkk = (float4KEY *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key;
/* All cases served by this function are exact */
*recheck = false;
key.lower = (GBT_NUMKEY *) &kkk->lower;
key.upper = (GBT_NUMKEY *) &kkk->upper;
PG_RETURN_BOOL(
gbt_num_consistent(&key, (void *) &query, &strategy, GIST_LEAF(entry), &tinfo)
);
}
Datum
gbt_float4_distance(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
float4 query = PG_GETARG_FLOAT4(1);
/* Oid subtype = PG_GETARG_OID(3); */
float4KEY *kkk = (float4KEY *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key;
key.lower = (GBT_NUMKEY *) &kkk->lower;
key.upper = (GBT_NUMKEY *) &kkk->upper;
PG_RETURN_FLOAT8(
gbt_num_distance(&key, (void *) &query, GIST_LEAF(entry), &tinfo)
);
}
Datum
gbt_float4_union(PG_FUNCTION_ARGS)
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
void *out = palloc(sizeof(float4KEY));
*(int *) PG_GETARG_POINTER(1) = sizeof(float4KEY);
PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo));
}
Datum
gbt_float4_penalty(PG_FUNCTION_ARGS)
{
float4KEY *origentry = (float4KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
float4KEY *newentry = (float4KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
float *result = (float *) PG_GETARG_POINTER(2);
penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
PG_RETURN_POINTER(result);
}
Datum
gbt_float4_picksplit(PG_FUNCTION_ARGS)
{
PG_RETURN_POINTER(gbt_num_picksplit(
(GistEntryVector *) PG_GETARG_POINTER(0),
(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
&tinfo
));
}
Datum
gbt_float4_same(PG_FUNCTION_ARGS)
{
float4KEY *b1 = (float4KEY *) PG_GETARG_POINTER(0);
float4KEY *b2 = (float4KEY *) PG_GETARG_POINTER(1);
bool *result = (bool *) PG_GETARG_POINTER(2);
*result = gbt_num_same((void *) b1, (void *) b2, &tinfo);
PG_RETURN_POINTER(result);
}