Thanks Douglas and Dirk,
Just to answer Douglas: No, I didn't get an error message when compiling
the cxx.function that I posted yesterday. Regarding the use of clone, is
it more time consuming to use this particular command?
Cheers,
Here are the corrected codes. It now works fine, or rather
On Thu, Dec 23, 2010 at 2:38 AM, Cedric Ginestet
wrote:
> Thanks Douglas and Dirk,
>
> Just to answer Douglas: No, I didn't get an error message when compiling the
> cxx.function that I posted yesterday. Regarding the use of clone, is it more
> time consuming to use this particular command?
Yes,
Cedric,
On 23 December 2010 at 08:38, Cedric Ginestet wrote:
| Thanks Douglas and Dirk,
|
| Just to answer Douglas: No, I didn't get an error message when compiling
| the cxx.function that I posted yesterday. Regarding the use of clone, is
You really want to revisit your compiler flags. Most
Hello,
Since I've been playing with efficiency of various operators for numeric
vectors (+,-,/,*), I'm now looking at other functions such as exp, sqrt, etc ...
The way we currently implement exp for vectors requires that we keep a function
pointer for the atomic exp and that we dereference th
I tried using a functor, calling 'exp' in its operator(), and it was even
faster than static (albeit very slightly):
test replications elapsed relative user.self sys.self user.child
3 functor1 0.465 1.00 0.4640.000 0
1 static1 0.472 1.0
Le 23 déc. 2010 à 06:54 PM, Davor Cubranic a écrit :
> I tried using a functor, calling 'exp' in its operator(), and it was even
> faster than static (albeit very slightly):
Intriguing.
> test replications elapsed relative user.self sys.self user.child
> 3 functor1 0.465
After a bit of googling, I figured out how to write the templated functor. It's
very simple:
incw <- '
template
struct Ftor {
inline double operator () (double x) const {
return Func(x);
}
};
Ftor ftor;
'
fw <- cxxfunction( , '
double x ;
for( int j=0; j<1000; j++){
for( int i=0; i
On 2010-12-23, at 10:03 AM, rom...@r-enthusiasts.com wrote:
>> Maybe you could create a functor for each basic function and use that in a
>> common loop implementation.
>>
>> I also tried templatizing Ftor on the function it delegates to, so that you
>> could do something like Ftor(), but I cou
