On 2019/07/25 11:15, Ilkka Virta wrote:
> On 24.7. 21:43, L A Walsh wrote:
>
>> The important part for me is whether or not it is faster to perform
>> 1 calculation, or 100. So which would be faster? In this case
>> execution speed
>> is more important than clarity. I consider that a
On 24.7. 21:43, L A Walsh wrote:
Does it improve execution time? That's more of a concern here than
readability, since it is an expression fragment, it isn't meant to be
understood
in isolation.
[...]
The important part for me is whether or not it is faster to perform
1 calculation,
On Thu, Jul 25, 2019 at 10:29:08AM -0700, L A Walsh wrote:
> On 2019/07/24 11:49, Greg Wooledge wrote:
> > $((expression))
> >
> >The expression is treated as if it were within double quotes,
> I didn't use $((...)), I'd put the whole thing in ((...)) which I hoped
> would
On 2019/07/24 11:49, Greg Wooledge wrote:
> On Wed, Jul 24, 2019 at 11:43:11AM -0700, L A Walsh wrote:
>
>> Those aren't my variables.
>> If you assign the integer attribute to a variable it isn't the same
>> as when you don't.
>>
>
> In this case it *is*, because everything is being fed
On Wed, Jul 24, 2019 at 11:43:11AM -0700, L A Walsh wrote:
> Those aren't my variables.
> If you assign the integer attribute to a variable it isn't the same
> as when you don't.
In this case it *is*, because everything is being fed to an arithmetic
command anyway.
Simplifying the bug report as m
On 2019/07/24 10:51, Greg Wooledge wrote:
> On Wed, Jul 24, 2019 at 09:39:46AM -0700, L A Walsh wrote:
>
>> str='cf80'
>> v=960 uxtra=1 c=0
>>
>
> Irrelevant alias shenanigans omitted. These are your variables.
>
Those aren't my variables.
If you assign the integer attribute to a
On Wed, Jul 24, 2019 at 09:39:46AM -0700, L A Walsh wrote:
> str='cf80'
> v=960 uxtra=1 c=0
Irrelevant alias shenanigans omitted. These are your variables.
> # In evaluating this expression:
> ((v = v | ( uxtra>=++c ? ((0x${str:2*c:2}) & 63) << (6*(uxtra-c)) : 0 )))
>
>
> I get 985 and not
shopt -o expand_aliases
my=declare int='my -i'
my str='cf80'
int v=960 uxtra=1 c=0
# In evaluating this expression:
((v = v | ( uxtra>=++c ? ((0x${str:2*c:2}) & 63) << (6*(uxtra-c)) : 0 )))
I get 985 and not 960 as expected
Which only happens when 'c' is 0 in the middle 'str' expression,
