On 05/31/2013 01:28 PM, Shriramana Sharma wrote:
On Fri, May 31, 2013 at 4:31 PM, Timon Gehr wrote:
If double uses xmm registers and real uses the fpu registers (as is standard
on x64), then double multiplication has twice the throughput of real
multiplication on recent intel microarchitecture
On 05/31/2013 09:08 PM, John Colvin wrote:
On Friday, 31 May 2013 at 16:17:28 UTC, Ali Çehreli wrote:
On 05/31/2013 04:28 AM, Shriramana Sharma wrote:
> On Fri, May 31, 2013 at 4:31 PM, Timon Gehr
wrote:
>>
>> If double uses xmm registers and real uses the fpu registers
(as is standard
>> on x
On Friday, 31 May 2013 at 16:17:28 UTC, Ali Çehreli wrote:
On 05/31/2013 04:28 AM, Shriramana Sharma wrote:
> On Fri, May 31, 2013 at 4:31 PM, Timon Gehr
wrote:
>>
>> If double uses xmm registers and real uses the fpu registers
(as is standard
>> on x64), then double multiplication has twice th
On 05/31/2013 04:28 AM, Shriramana Sharma wrote:
> On Fri, May 31, 2013 at 4:31 PM, Timon Gehr wrote:
>>
>> If double uses xmm registers and real uses the fpu registers (as is
standard
>> on x64), then double multiplication has twice the throughput of real
>> multiplication on recent intel mic
On Fri, May 31, 2013 at 4:31 PM, Timon Gehr wrote:
>
> If double uses xmm registers and real uses the fpu registers (as is standard
> on x64), then double multiplication has twice the throughput of real
> multiplication on recent intel microarchitectures.
Hi can you clarify that? I'm interested b
On 05/30/2013 06:45 PM, bearophile wrote:
...
If you have to store many reals, they require more memory than doubles
(how much is relative to the operating system). Regarding speed in
theory double and real should give the same, ...
If double uses xmm registers and real uses the fpu registers (
Am Fri, 31 May 2013 07:02:11 +0530
schrieb Shriramana Sharma :
> Thanks to all who replied.
>
> On Thu, May 30, 2013 at 10:07 PM, Diggory wrote:
> >
> > Since D does all operations at highest possible precision anyway (even for
> > double or float) it only makes a difference when the value is be
Thanks to all who replied.
On Thu, May 30, 2013 at 10:07 PM, Diggory wrote:
>
> Since D does all operations at highest possible precision anyway (even for
> double or float) it only makes a difference when the value is being stored
> to memory and then read back again.
But isn't this true for ev
On 05/30/2013 06:45 PM, bearophile wrote:
> Regarding speed in theory double and real
> should give the same, but in practice theory and practice often differ.
In my experience, using real slows things down, though the degree depends on
use-case (mine involves lots of iterations and calculations o
Am Thu, 30 May 2013 17:47:14 +0530
schrieb Shriramana Sharma :
> Hello. I like that D exposes to me the real type to maximally utilize
> the machine's numerical precision. Since I am writing a program
> (currently in C++ but I am thinking of moving to D) that has to handle
> lots of fractional num
Shriramana Sharma:
Hello. I like that D exposes to me the real type to maximally
utilize
the machine's numerical precision. Since I am writing a program
(currently in C++ but I am thinking of moving to D) that has to
handle
lots of fractional numbers (calculating offset curves and such)
I am
On Thursday, 30 May 2013 at 16:18:44 UTC, Shriramana Sharma wrote:
Hello. I like that D exposes to me the real type to maximally
utilize
the machine's numerical precision. Since I am writing a program
(currently in C++ but I am thinking of moving to D) that has to
handle
lots of fractional numb
Hello. I like that D exposes to me the real type to maximally utilize
the machine's numerical precision. Since I am writing a program
(currently in C++ but I am thinking of moving to D) that has to handle
lots of fractional numbers (calculating offset curves and such) I am
wondering whether/when I
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