Re: [9fans] awk: hex numbers? (and leak(1))

[Gabriel Diaz]

hello

may be this help you:

define todec(str) {
       hstr="1234567890ABDCEF";
       res=0;
       n=split(str,digit,"");

       for(i=1;i<=n;i++) {
               num=index(hstr,digit[i])-1;
               res=res+(num*16^(n-i));
        }

       return res;
}


then just sum=todec(hex1)+todec(hex2);

if you do not go beyond int it should work.

slds.

gabi


On 9/20/06, Axel Belinfante <[EMAIL PROTECTED]> wrote:

is there a way to use awk to sum hex values?
i.e. I want to sum values in the 3rd column of

block 0x000af9a8 0x00000040 0x0001ddf3 0x00000000
block 0x000afd88 0x00000040 0x0001ddf3 0x00000000

I have tried to make awk use an external program
to do the hex-to-dec conversion, but that was very
slow (probably due to many page faults).
(in the end I resorted to perl...)



context:

I've been fiddling with leak(1) to make it print
an overview of how much memory is allocated where,
as in:

location               total    calls
                                           amount
                                           allocated

src(0x0001d8f1);        // 247648       20
src(0x000067f8);        // 24256        59
src(0x0001da70);        // 15760        6
src(0x000128ac);        // 8256 1
src(0x000210f8);        // 4128 66
src(0x00014bc2);        // 3648 57
[...]
src(0x00006586);        // 64   1
src(0x00011a50);        // 64   1
src(0x000067c7);        // 64   1
src(0x0001ca32);        // 32   1
// 326544


I found it quite useful to get insight in where
the memory goes (even when it is not leaked) -
but maybe we already have this functionality
somewhere, and I missed it?

Axel.