[DiscordArchive] Wiki page where?
[DiscordArchive] Wiki page where?
Original source
Normally you would divide by a power of 2 because it's so much faster, but if you really need the full range you have to divide by power of 2 - 1
rektbyfaith
06-04-2018, 06:53 AM #11Archived author: Quantam • Posted: 2018-06-04T06:53:22.717000+00:00
Original source
Normally you would divide by a power of 2 because it's so much faster, but if you really need the full range you have to divide by power of 2 - 1
Original source
Hmm. Storing abs+sign certainly makes rounding easier. Doing a proper round on a two's complement number takes a good number of instructions if you're not using a DSP chip (which has hardware rounding)
rektbyfaith
06-04-2018, 06:54 AM #12Archived author: Quantam • Posted: 2018-06-04T06:54:37.857000+00:00
Original source
Hmm. Storing abs+sign certainly makes rounding easier. Doing a proper round on a two's complement number takes a good number of instructions if you're not using a DSP chip (which has hardware rounding)
Original source
In any case, the difference between fixed_point and fixed16 is the -1
rektbyfaith
06-04-2018, 07:00 AM #13Archived author: Quantam • Posted: 2018-06-04T07:00:41.319000+00:00
Original source
In any case, the difference between fixed_point and fixed16 is the -1
Original source
Yes. And I don’t know which one is correct.
rektbyfaith
06-04-2018, 07:01 AM #14Archived author: schlumpf • Posted: 2018-06-04T07:01:40.143000+00:00
Original source
Yes. And I don’t know which one is correct.
Original source
Are we talking in general, or is this for some game data structure?
rektbyfaith
06-04-2018, 07:02 AM #15Archived author: Quantam • Posted: 2018-06-04T07:02:00.857000+00:00
Original source
Are we talking in general, or is this for some game data structure?
Original source
If this is in general then the standard is to use two's complement math with a power of two divider (unless you absolutely need [-1,1] range
rektbyfaith
06-04-2018, 07:04 AM #16Archived author: Quantam • Posted: 2018-06-04T07:04:00.143000+00:00
Original source
If this is in general then the standard is to use two's complement math with a power of two divider (unless you absolutely need [-1,1] range
Original source
It is the wowdev wiki..
rektbyfaith
06-04-2018, 07:07 AM #17Archived author: schlumpf • Posted: 2018-06-04T07:07:26.611000+00:00
Original source
It is the wowdev wiki..
Original source
Well if it's a game structure you're gonna have to break out the disassembly
rektbyfaith
06-04-2018, 07:08 AM #18Archived author: Quantam • Posted: 2018-06-04T07:08:04.600000+00:00
Original source
Well if it's a game structure you're gonna have to break out the disassembly
Original source
Should be very obvious if it's not power of two
rektbyfaith
06-04-2018, 07:08 AM #19Archived author: Quantam • Posted: 2018-06-04T07:08:12.672000+00:00
Original source
Should be very obvious if it's not power of two
Original source
We’re not inventing that shit for ourselves. Why would you ever invent a 5,9 fixed point value out of free will?!
rektbyfaith
06-04-2018, 07:08 AM #20Archived author: schlumpf • Posted: 2018-06-04T07:08:14.205000+00:00
Original source
We’re not inventing that shit for ourselves. Why would you ever invent a 5,9 fixed point value out of free will?!
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