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Re: precision of signed integers



Aubrey Jaffer wrote:

A 16.bit unsigned integer is 16.bit wide.

Is the corresponding width signed integer 16.bit or 15.bit?


A 16-bit 2's-complement signed integer would have a value range from -32767 to 32768. The high bit would indicate whether it is positive or negative; a negative value would be the inverse of it's absolute value, plus one. Thus, -1 would be 1111111111111111, -32767 would be 1000000000000000, and 0 would be 0000000000000000 for both negative and positive values.

Joseph Osako


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