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happydance, posted Sun Apr 23, 2017 7:32 pm (22578)

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not sure what it is really is called but id like to now how to achieve this by bms script

like if the size it 0xF2DA it will output 0xF300
or if the size it 0x3A2DA it will output 0x3A300


really not sure how to do this

this is my closest miserable attempt to make one but it's still wrong...


set SIZE long 0xF2DA
xmath TEST2 "(SIZE & 0xF00) 0x100"
xmath TEST3 "(SIZE & 0xF000) TEST2"


it will output 0xF300 but if I input like 0x2F300 it will still output 0xF300

aluigi, posted Sun Apr 23, 2017 8:02 pm (22581)

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math SIZE x 0x100

Yeah it's really that easy

Acewell, posted Sun Apr 23, 2017 11:18 pm (22591)

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here try this

Code:

set SIZE long 0x3A2DA
print "%SIZE|hex% :size"
xmath CHECK "SIZE % 256"
print "%CHECK|hex% :check"
if CHECK != 0
   xmath SIZE "(SIZE - CHECK)   256"
   print "%SIZE|hex% :new size"
endif
print "%SIZE|hex% :final size"

aluigi, posted Mon Apr 24, 2017 8:28 am (22597)

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@Acewell
Why? Isn't "math SIZE x 0x100" better?

Vuze, posted Mon Apr 24, 2017 1:57 pm (22609)

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.
Could you kindly paste the source code for the math x command? I'd like to port it to a C# tool I'm working on.
Lucky coincidence this showed up on my twitter feed yesterday when I ran into the problem

aluigi, posted Mon Apr 24, 2017 3:57 pm (22614)

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var1 is the number to round and var2 is the alignment (for example 0x100):

Code:

if(var2 && ((u_int)var1 % (u_int)var2)) { var1  = (var2 - ((u_int)var1 % (u_int)var2)); }

Vuze, posted Mon Apr 24, 2017 4:47 pm (22618)

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Thank you!

Acewell, posted Mon Apr 24, 2017 8:10 pm (22624)

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aluigi wrote:

Isn't "math SIZE x 0x100" better?

oh wait, that "x" is a special operator isn't it?
i was thinking you meant "times", like 2 x 2 = 4

first time i saw that "x" used, you never mentioned this solution to my "maintain a multiple of 4" problem here
viewtopic.php?f=13&t=3952

both ways work, but can you round down with your solution?
ah i see you have a "y" operator for that

aluigi, posted Mon Apr 24, 2017 8:48 pm (22625)

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Eh, when I see long posts I can't focus on them and, in that case I just focused only on the script you posted almost ignoring the rest

Anyway you can find all the operators in quickbms.txt, 'x' is there.

happydance, posted Mon Apr 24, 2017 10:25 pm (22631)

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thanks for the reply! gonna try some of the examples you guys gave.