nd_stats_indexing_behaviour()

static void nd_stats_indexing_behaviour ( void  )

static

Definition at line 104 of file postgis/cunit/cu_tester.c.

{
        ND_STATS stats;
        const int good_index[ND_DIMS] = {1, 2, 0, 0};
        const int bad_index[ND_DIMS] = {1, 5, 0, 0};
 
        memset(&stats, 0, sizeof(stats));
        stats.ndims = 3;
        stats.size[0] = 4.0f;
        stats.size[1] = 5.0f;
        stats.size[2] = 3.0f;
 
        /* Three-dimensional index  (x=1, y=2, z=0) collapses into 1 + 2 * 4. */
        CU_ASSERT_EQUAL(nd_stats_value_index(&stats, good_index), 1 + 2 * 4);
        /* Any request outside the histogram bounds triggers a guard. */
        CU_ASSERT_EQUAL(nd_stats_value_index(&stats, bad_index), -1);
 
        /* Regression for #5959: ndims higher than populated sizes still honours guards. */
        stats.ndims = 4;
        CU_ASSERT_EQUAL(nd_stats_value_index(&stats, good_index), -1);
}

References ND_DIMS, nd_stats_value_index(), ND_STATS_T::ndims, and ND_STATS_T::size.

Referenced by main().

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