test_zigzag()

static void test_zigzag ( void  )

static

Definition at line 213 of file cu_varint.c.

References INT32_MAX, INT8_MAX, unzigzag32(), unzigzag64(), unzigzag8(), varint_suite_setup(), zigzag32(), zigzag64(), and zigzag8().

Referenced by varint_suite_setup().

{
        int64_t a;
        int32_t b;
        int i;

        for ( i = 1; i < 1024; i += 31 )
        {
                a = b = i;
                CU_ASSERT_EQUAL(a, unzigzag64(zigzag64(a)));
                CU_ASSERT_EQUAL(b, unzigzag32(zigzag32(b)));

                a = b = -1 * i;
                CU_ASSERT_EQUAL(a, unzigzag64(zigzag64(a)));
                CU_ASSERT_EQUAL(b, unzigzag32(zigzag32(b)));
        }

        //8
        CU_ASSERT_EQUAL(-INT8_MAX, unzigzag8(zigzag8(-INT8_MAX)));
        CU_ASSERT_EQUAL(INT8_MAX, unzigzag8(zigzag8(INT8_MAX)));
        CU_ASSERT_EQUAL(0, unzigzag8(zigzag8(0)));

        //32
        CU_ASSERT_EQUAL(-INT32_MAX, unzigzag32(zigzag32(-INT32_MAX)));
        CU_ASSERT_EQUAL(INT32_MAX, unzigzag32(zigzag32(INT32_MAX)));
        CU_ASSERT_EQUAL(0, unzigzag32(zigzag32(0)));

        //64
        CU_ASSERT_EQUAL(-INT64_MAX, unzigzag64(zigzag64(-INT64_MAX)));
        CU_ASSERT_EQUAL(INT64_MAX, unzigzag64(zigzag64(INT64_MAX)));
        CU_ASSERT_EQUAL(0, unzigzag64(zigzag64(0)));
}

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