Re: funny looking equation

From: Randy Dunlap
Date: Wed Oct 11 2006 - 15:47:13 EST


On Wed, 11 Oct 2006 15:40:55 -0400 Steven Rostedt wrote:

> I was just testing some of my parsing code on all the .c and .h files in
> the Linux kernel, and I came up with this little equation:
>
> from 2.6.18 drivers/atm/eni.c:1272
>
>
> ---
> int div;
>
> if (!*pcr) *pcr = eni_dev->tx_bw+reserved;
> for (*pre = 3; *pre >= 0; (*pre)--)
> if (TS_CLOCK/pre_div[*pre]/64 > -*pcr) break;
> if (*pre < 3) (*pre)++; /* else fail later */
> div = pre_div[*pre]*-*pcr;
> ^^^^^^^^^^^^^
> This could really do with some spaces and a couple of parenthesis.
>
> DPRINTK("max div %d\n",div);
> *res = (TS_CLOCK+div-1)/div-1;
> ---
>
>
> Oh well, this isn't a bug. Just something that someone might want to
> clean up the next time they touch that code.

and break the if-lines into kernel style.

---
~Randy
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