What is the significance of the number, 32767?

Question

I realize in some programming languages, random number generators generate a default value of 0 to 32767 (for example, in php, rand(); will return a float between 0 and 32767). What is the significance of such a random number? (As it is not a power of two or anything special like that.)

Maybe read this: http://stackoverflow.com/questions/18558271/why-the-range-of-int-is-32768-to-32767 — ficuscr, Jun 04 '15 at 20:12

score 19 · Answer 1 · edited Dec 23 '21 at 17:06

19

It is 2^15-1, so the maximum value of a 16-bit signed integer.

edited Dec 23 '21 at 17:06

TylerH

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answered Jun 04 '15 at 20:12

FPK

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score 3 · Answer 2 · answered Jun 04 '15 at 20:15

3

I guess, On 16-bit implementations (still common when the C89 standard was written) that was the largest signed integer.

answered Jun 04 '15 at 20:15

XOR-Manik

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score 0 · Accepted Answer · answered Jun 04 '15 at 20:14

0

32767 + 1 is a power of 2 Binary representation of numbers uses powers of 2. So, in an 4-bit structure, 0101 is 2^0 x 1, 2^1 x 0, 2^2 x 1, and 2^3 x 0 which is 5.

The MSB is used for sign and unsigned integers.

answered Jun 04 '15 at 20:14

Kirk Powell

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This answer makes no sense. FPK's answer is correct – Jeremiah Rose Jun 09 '21 at 04:59

What is the significance of the number, 32767?

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