test_varint()

static void test_varint ( void  )

static

Definition at line 105 of file cu_varint.c.

{
 
        do_test_u64_varint(1, 1, "01");
        do_test_u64_varint(300, 2, "AC02");
        do_test_u64_varint(150, 2, "9601");
        do_test_u64_varint(240, 2, "F001");
        do_test_u64_varint(0x4000, 3, "808001");
  /*
                0100:0000 0000:0000 - input (0x4000)
      1000:0000 1000:0000 0000:0001 - output (0x808001)
       000:0000  000:0000  000:0001 - chop
       000:0001  000:0000  000:0000 - swap
         0:0000 0100:0000 0000:0000 - concat = input
   */
        do_test_u64_varint(2147483647, 5, "FFFFFFFF07");
  /*
              0111:1111 1111:1111 1111:1111 1111:1111 - input (0x7FFFFFFF)
    1111:1111 1111:1111 1111:1111 1111:1111 0000:0111 - output(0xFFFFFFFF07)
     111:1111  111:1111  111:1111  111:1111  000:0111 - chop
     000:0111  111:1111  111:1111  111:1111  111:1111 - swap
              0111:1111 1111:1111 1111:1111 1111:1111 - concat = input
                      |         |         |         |
                   2^32      2^16       2^8       2^0
   */
        do_test_s64_varint(1, 1, "02");
        do_test_s64_varint(-1, 1, "01");
        do_test_s64_varint(-2, 1, "03");
 
        do_test_u32_varint(2147483647, 5, "FFFFFFFF07");
  /*
              0111:1111 1111:1111 1111:1111 1111:1111 - input (7fffffff)
    1111:1111 1111:1111 1111:1111 1111:1111 0000:0111 - output (ffffff07)
     111:1111  111:1111  111:1111  111:1111  000:0111 - chop
     000:0111  111:1111  111:1111  111:1111  111:1111 - swap
              0111:1111 1111:1111 1111:1111 1111:1111 - concat = input
                      |         |         |         |
                   2^32      2^16       2^8       2^0
   */
        do_test_s32_varint(2147483647, 5, "FEFFFFFF0F");
  /*
              0111:1111 1111:1111 1111:1111 1111:1111 - input (7fffffff)
    1111:1110 1111:1111 1111:1111 1111:1111 0000:1111 - output(feffffff0f)
    1111:1111 1111:1111 1111:1111 1111:1111 0000:0111 - zigzag (ffffff07)
     111:1111  111:1111  111:1111  111:1111  000:0111 - chop
     000:0111  111:1111  111:1111  111:1111  111:1111 - swap
              0111:1111 1111:1111 1111:1111 1111:1111 - concat = input
                      |         |         |         |
                   2^32      2^16       2^8       2^0
   */
        do_test_s32_varint(-2147483648, 5, "FFFFFFFF0F");
 
        do_test_s32_varint(1, 1, "02");
  /*
    0000:0001 - input (01)
    0000:0010 - A: input << 1
    0000:0000 - B: input >> 31
    0000:0010 - zigzag (A xor B) == output
   */
 
        do_test_s32_varint(-1, 1, "01");
  /*
    1111:1111 ... 1111:1111 - input (FFFFFFFF)
    1111:1111 ... 1111:1110 - A: input << 1
    1111:1111 ... 1111:1111 - B: input >> 31
    0000:0000 ... 0000:0001 - zigzag (A xor B) == output
   */
 
 
}

References do_test_s32_varint(), do_test_s64_varint(), do_test_u32_varint(), and do_test_u64_varint().

Referenced by varint_suite_setup().

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