Original Address: https://blog.csdn.net/bdss58/article/details/78388858
In C, there are some standard libraries limits.h defines a constant maximum and minimum values, for example an int constant INT_MAX maximum, minimum constant INT_MIN, unsigned integer type uint constant maximum UINT_MAX
golang standard library does not define these variables. However, bit manipulation operations can easily define these constants.
Uint Unsigned integer
whose minimum value is 0, all bits in its binary representation is 0,
uint = 0 UINT_MIN const
1
all bits of the binary representation of the maximum value is 1, then
uint UINT_MAX ^ = const (0)
1
signed integer int
according complement, its maximum binary representation, the first 0 and the other 1, then,
INT_MAX = int const (^ uint (0) >> 1)
1
according to the complement, which is the minimum binary representation, the first one, the rest 0, then
const INT_MIN = ^INT_MAX
Author: bdss58
Source: CSDN
Original: https://blog.csdn.net/bdss58/article/details/78388858
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