Aeloria Resa schrieb:
It's casting 0xFF, not 0x80, but anyways. Umm, why'd you replace it with 1s? When it get's cast, I was under the impression that, like everything else, it pads it with 0s.
casting preserves the sign of a value. e.g. a "negative" byte 0xAB is cast to int 0xFFFFFFAB, an int 0xABCD1234 is cast to long 0xFFFFFFFFABCD1234. Positive bytes like 0x42 are cast to 0x00000042 etc.
In other words, the most significant bit (the "sign bit") of the source is used to fill the destination.
the number -2 e.g. is 0xFE as byte 0xFFFFFFFE as int, 0xFFFFFFFFFFFFFFFE as long.
in java there is no such thing as an unsigned byte/integer/long.
mihi
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That rather explains it. It also maks me want to smash Java to itty bitty little infinitesimal bits. (Or bytes, but they're a bit too large. Java might get back up, like the zombie it is.)
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