toTwosComplement

The toTwosComplement function is a utility method provided by the web3.utils module that converts a negative number into its two's complement and returns a hex string representation of the result.

The function takes two arguments: value and nibbleWidth.

• value: The negative number to be converted. This can be a number or a bigint.
• nibbleWidth: An optional parameter that specifies the nibble width of the hex string. The default value is 64.

The function returns a string representing the two's complement of the input value, padded with zeros to the specified nibble width.

Here are some examples of how the toTwosComplement function can be used:

In the first example, the toTwosComplement function is called with the number 13 and a nibble width of 32. The function returns a hex string representing the two's complement of 13.

In the second example, the toTwosComplement function is called with the string '-0x1' and a nibble width of 32. The function returns a hex string representing the two's complement of -1.

In the third example, the toTwosComplement function is called with a bigint value and a nibble width of 32. The function returns a hex string representing the two's complement of the bigint value.