One way to apply a bitwise OR operation

Source: Internet
Author: User

Java.nio.Buffer.java source code is as follows:

Static void checkbounds (intintint  size) {    if (off | len | (off + len) | (Size-(off + len))) < 0)        thrownew  indexoutofboundsexception ();}

Right

if (Off | len | (off + len) | (Size-(off + len))) < 0)

Very curious, if I had written it myself, might have written

If

Bitwise OR operation everyone knows, so if a number is negative, the result is negative.

If you have a bitwise OR operation (|) that is not clear, you can refer to this article.

One way to apply a bitwise OR operation

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