gidx_volume()

static float gidx_volume ( GIDX *  a )

static

Definition at line 217 of file gserialized_gist_nd.c.

References gidx_is_unknown().

Referenced by gidx_union_edge(), gidx_union_volume(), and gserialized_gist_penalty().

{
        float result;
        int i;
        if ( a == NULL || gidx_is_unknown(a) )
        {
                /* elog(ERROR, "gidx_volume received a null argument"); */
                return 0.0;
        }
        result = GIDX_GET_MAX(a,0) - GIDX_GET_MIN(a,0);
        for ( i = 1; i < GIDX_NDIMS(a); i++ )
                result *= (GIDX_GET_MAX(a,i) - GIDX_GET_MIN(a,i));
        POSTGIS_DEBUGF(5, "calculated volume of %s as %.8g", gidx_to_string(a), result);
        return result;
}

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