Datum
float8_dist(PG_FUNCTION_ARGS)
{
float8 a = PG_GETARG_FLOAT8(0);
float8 b = PG_GETARG_FLOAT8(1);
float8 r;
r = a - b;
CHECKFLOATVAL(r, isinf(a) || isinf(b), true);
PG_RETURN_FLOAT8(Abs(r));
}
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) );
}
static float8
gbt_float8_dist(const void *a, const void *b)
{
float8 arg1 = *(const float8 *) a;
float8 arg2 = *(const float8 *) b;
float8 r;
r = arg1 - arg2;
CHECKFLOATVAL(r, isinf(arg1) || isinf(arg2), true);
return Abs(r);
}
