I'll give it a bash but don't hold your breath...
cheers
________________________________
From: pancake <[email protected]>
To: KillBoy PowerHed <[email protected]>; toolchain to work with
binary files <[email protected]>
Sent: Thursday, 25 August 2011 9:18 PM
Subject: Re: [radare] Order of operations supported?
Yep. The r_num_math calculates the operations as in a flow. I know it's ugly as
long as its not math compliant. But it works faster than constructing a tree in
memory and walk over it. And its ok for most situations.. Maybe this should be
documented somewhere or use a complete ast to do the math.
The code is in libr/util/num.c and there's a test suite for it in t/.
If you want to contribute with a better implementation i'm open to suggestions
and patches :)
On 22/08/2011, at 0:44, KillBoy PowerHed <[email protected]> wrote:
Hi list,
>
>
>Just a noob question, I was wondering if anyone could tell me why expressions
>don't support the order of operations? I've been reading the manual but
>couldn't see anything ...
>
>
>
>example output:
>[0x00404834]> ? 4*3+3
>15 0xf
>[0x00404834]> ? 3+4*3
>21 0x15
>[0x00404834]> ? 3+(4*3)
>15 0xf
>
>
>So it looks like brackets are evaluated first but multiplication/division
>aren't evaluated before addition/subtraction ... it was a little confusing
>when basic maths wasn't calculating as expected
>
>
>
>thanks
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