diff options
Diffstat (limited to 'contrib/btree_gist/btree_float4.c')
| -rw-r--r-- | contrib/btree_gist/btree_float4.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_float4.c b/contrib/btree_gist/btree_float4.c index 673c14a8f72..bec026a923a 100644 --- a/contrib/btree_gist/btree_float4.c +++ b/contrib/btree_gist/btree_float4.c @@ -6,6 +6,7 @@ #include "btree_gist.h" #include "btree_utils_num.h" #include "utils/float.h" +#include "utils/sortsupport.h" typedef struct float4key { @@ -22,6 +23,7 @@ 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); +PG_FUNCTION_INFO_V1(gbt_float4_sortsupport); static bool gbt_float4gt(const void *a, const void *b, FmgrInfo *flinfo) @@ -204,3 +206,24 @@ gbt_float4_same(PG_FUNCTION_ARGS) *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo); PG_RETURN_POINTER(result); } + +static int +gbt_float4_ssup_cmp(Datum x, Datum y, SortSupport ssup) +{ + float4KEY *arg1 = (float4KEY *) DatumGetPointer(x); + float4KEY *arg2 = (float4KEY *) DatumGetPointer(y); + + /* for leaf items we expect lower == upper, so only compare lower */ + return float4_cmp_internal(arg1->lower, arg2->lower); +} + +Datum +gbt_float4_sortsupport(PG_FUNCTION_ARGS) +{ + SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0); + + ssup->comparator = gbt_float4_ssup_cmp; + ssup->ssup_extra = NULL; + + PG_RETURN_VOID(); +} |