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The relationship between the complement of negative numbers and the original code

小老鼠
Release: 2023-12-22 10:46:25
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Existing relationship: 1. The complement of a negative number is the inversion of all bits of the original code except the sign bit, and then the lowest bit is added by 1; 2. The complement of a positive number is the same as its original code; 3. Negative numbers The complement of can be obtained by using the positive original code 1.

The relationship between the complement of negative numbers and the original code

There is the following relationship between the complement of a negative number and the original code:

  1. The complement of a negative number is the division sign of its original code Invert all other bits, then add 1 to the lowest bit.
  2. The complement of a positive number is the same as its original code.
  3. The complement of a negative number can be obtained by using the original code of a positive number 1.

For example, find the complement of -5: The positive number corresponding to

  1. -5 is 5.
  2. Invert 5 bitwise to get 0101.
  3. Add 1 to the end of 0101 to get 01011, which is the complement of -5.

Therefore, the relationship between the complement of a negative number and the original code is: the complement of a negative number is the inversion of all bits of the original code except the sign bit, and then adding 1 to the lowest bit.

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