On Thursday, 23 May 2019 at 21:50:38 UTC, Alex wrote:
I've used very small LUT's like a length of 5 and it didn't
significantly change anything.
Use a size that is 2^n, then mask the index and hopefully that
will turn off bounds checks.
E.g. If LUT size is 16, then index the lut with
On Thursday, 23 May 2019 at 21:30:47 UTC, Alex wrote:
I don't see how that can necessarily be faster. A LUT can give
full 64-bit precision with one operation. The CORDIC needs
iteration, at least 10 to be of any use. LUT's are precision
independent assuming the creation cost is not included.
On Thursday, 23 May 2019 at 18:57:03 UTC, Ola Fosheim Grøstad
wrote:
On Wednesday, 22 May 2019 at 00:22:09 UTC, JS wrote:
I am trying to create some fast sin, sinc, and exponential
routines to speed up some code by using tables... but it seems
it's slower than the function itself?!?
Not when
On Thursday, 23 May 2019 at 19:17:40 UTC, Ola Fosheim Grøstad
wrote:
On Wednesday, 22 May 2019 at 00:22:09 UTC, JS wrote:
xxx = 0;
sw.reset();
sw.start();
for(double i = 0; i < 1000; i++) xxx += sin(PI*i);
t = sw.peek().msecs;
writeln(t);
On Thursday, 23 May 2019 at 18:37:17 UTC, H. S. Teoh wrote:
On Thu, May 23, 2019 at 06:20:23PM +, kdevel via
Digitalmars-d-learn wrote:
On Thursday, 23 May 2019 at 09:44:15 UTC, Cym13 wrote:
[...]
> To go fast, read/write bigger chunks.
Or use rawWrite instead of write (reduces the
On Thu, May 23, 2019 at 11:06 PM Daniel Kozak wrote:
> On Thu, May 23, 2019 at 11:10 AM BoQsc via Digitalmars-d-learn <
> digitalmars-d-learn@puremagic.com> wrote:
>
> https://matthias-endler.de/2017/yes/
>
So this should do it
void main()
{
import std.range : array, cycle, take;
On Thu, May 23, 2019 at 11:19 PM Daniel Kozak wrote:
Fixed version without decode to dchar
void main()
{
import std.range : array, cycle, take;
import std.stdio;
import std.utf;
immutable buf_size = 8192;
immutable buf = "\x00".byCodeUnit.cycle.take(buf_size).array;
auto
On Thu, May 23, 2019 at 11:10 AM BoQsc via Digitalmars-d-learn <
digitalmars-d-learn@puremagic.com> wrote:
> This code of D creates a dummy 47,6 MB text file filled with Nul
> characters in about 9 seconds
>
> import std.stdio, std.process;
>
> void main() {
>
> writeln("Creating a dummy
On Thursday, 23 May 2019 at 15:20:22 UTC, Timon Gehr wrote:
On 23.05.19 12:21, Alex wrote:
On Wednesday, 22 May 2019 at 00:55:37 UTC, Adam D. Ruppe wrote:
On Wednesday, 22 May 2019 at 00:22:09 UTC, JS wrote:
I am trying to create some fast sin, sinc, and exponential
routines to speed up some
On Wednesday, 22 May 2019 at 00:22:09 UTC, JS wrote:
I am trying to create some fast sin, sinc, and exponential
routines to speed up some code by using tables... but it seems
it's slower than the function itself?!?
Not when I tried it with one of the online compilers, LUT is 3-4
times faster
On Thu, May 23, 2019 at 06:20:23PM +, kdevel via Digitalmars-d-learn wrote:
> On Thursday, 23 May 2019 at 09:44:15 UTC, Cym13 wrote:
[...]
> > To go fast, read/write bigger chunks.
>
> Or use rawWrite instead of write (reduces the runtime to about 1.6 s).
> When using write time is IMHO spent
On Thursday, 23 May 2019 at 09:44:15 UTC, Cym13 wrote:
[...]
Note in particular the blocksize argument. I set it to 1M but
by default it's 512 bytes. If you use strace with the command
above you'll see a series of write() calls, each writting 1M of
null bytes to testfile. That's the main
On Thursday, 23 May 2019 at 14:50:12 UTC, Per Nordlöw wrote:
How do I specify a druntime flag such as
--DRT-gcopt=gc:precise
when running with dub as
dub run --compiler=dmd --build=unittest
?
The precise GC flag was introduced in verison 2.085.0
See:
-
On Thursday, 23 May 2019 at 15:05:15 UTC, rikki cattermole wrote:
Should be as easy as
dflags "--DRT-gcopt=gc:precise"
right?
That would be passed to dmd, not to the build executable upon
running.
You mean wise versa, right?
Now I understand,
--DRT-gcopt=gc:precise
is passed to
On 23.05.19 12:21, Alex wrote:
On Wednesday, 22 May 2019 at 00:55:37 UTC, Adam D. Ruppe wrote:
On Wednesday, 22 May 2019 at 00:22:09 UTC, JS wrote:
I am trying to create some fast sin, sinc, and exponential routines
to speed up some code by using tables... but it seems it's slower
than the
On 24/05/2019 3:03 AM, Per Nordlöw wrote:
On Thursday, 23 May 2019 at 15:02:12 UTC, rikki cattermole wrote:
And if I want to set this in a dub.sdl?
No can do. There is meant to be a way to set it in D however.
But I have heard mixed results (not that I've tried it).
Should be as easy as
On 24/05/2019 2:58 AM, Per Nordlöw wrote:
On Thursday, 23 May 2019 at 14:51:41 UTC, rikki cattermole wrote:
dub run --compiler=dmd --build=unittest -- --DRT-gcopt=gc:precise
Thanks!
And if I want to set this in a dub.sdl?
No can do. There is meant to be a way to set it in D however.
But I
On Thursday, 23 May 2019 at 15:02:12 UTC, rikki cattermole wrote:
And if I want to set this in a dub.sdl?
No can do. There is meant to be a way to set it in D however.
But I have heard mixed results (not that I've tried it).
Should be as easy as
dflags "--DRT-gcopt=gc:precise"
right?
On 24/05/2019 3:01 AM, Per Nordlöw wrote:
On Thursday, 23 May 2019 at 14:51:41 UTC, rikki cattermole wrote:
dub run --compiler=dmd --build=unittest -- --DRT-gcopt=gc:precise
Hmm, the flag doesn't propagate to dmd when compiling in verbose mode
via -v as
dub run -v --compiler=dmd
On Thursday, 23 May 2019 at 14:51:41 UTC, rikki cattermole wrote:
dub run --compiler=dmd --build=unittest --
--DRT-gcopt=gc:precise
Hmm, the flag doesn't propagate to dmd when compiling in verbose
mode via -v as
dub run -v --compiler=dmd --build=unittest --
--DRT-gcopt=gc:precise
On Thursday, 23 May 2019 at 14:51:41 UTC, rikki cattermole wrote:
dub run --compiler=dmd --build=unittest --
--DRT-gcopt=gc:precise
Thanks!
And if I want to set this in a dub.sdl?
How do I specify a druntime flag such as
--DRT-gcopt=gc:precise
when running with dub as
dub run --compiler=dmd --build=unittest
?
The precise GC flag was introduced in verison 2.085.0
See:
- https://dlang.org/changelog/2.085.0.html#gc_precise
-
On 24/05/2019 2:50 AM, Per Nordlöw wrote:
How do I specify a druntime flag such as
--DRT-gcopt=gc:precise
when running with dub as
dub run --compiler=dmd --build=unittest
dub run --compiler=dmd --build=unittest -- --DRT-gcopt=gc:precise
On Wednesday, 22 May 2019 at 00:55:37 UTC, Adam D. Ruppe wrote:
On Wednesday, 22 May 2019 at 00:22:09 UTC, JS wrote:
I am trying to create some fast sin, sinc, and exponential
routines to speed up some code by using tables... but it seems
it's slower than the function itself?!?
There's
On Wednesday, 22 May 2019 at 08:25:58 UTC, Basile B. wrote:
On Wednesday, 22 May 2019 at 00:22:09 UTC, JS wrote:
I am trying to create some fast sin, sinc, and exponential
routines to speed up some code by using tables... but it seems
it's slower than the function itself?!?
[...]
Hi,
I'm trying to use Dagon (https://github.com/gecko0307/dagon) for
what I thought would be a simple enough project.
Initially the one thing I needed to do was to install Nuklear and
Freetype 2.8.1 `Under other OSes you have to install them
manually` as I'm running on Ubuntu.
I'm using dub and
On Wednesday, 22 May 2019 at 23:54:47 UTC, Adam D. Ruppe wrote:
On Wednesday, 22 May 2019 at 22:33:52 UTC, Alex wrote:
auto x = (GdkEventButton* e, Widget w) ...
X.addOnButtonPress(x);
Why is x not a delegate?
Because you didn't ask for one and it didn't have to be.
Just add the
On Thursday, 23 May 2019 at 09:09:05 UTC, BoQsc wrote:
This code of D creates a dummy 47,6 MB text file filled with
Nul characters in about 9 seconds
import std.stdio, std.process;
void main() {
writeln("Creating a dummy file");
File file = File("test.txt", "w");
for (int
This code of D creates a dummy 47,6 MB text file filled with Nul
characters in about 9 seconds
import std.stdio, std.process;
void main() {
writeln("Creating a dummy file");
File file = File("test.txt", "w");
for (int i = 0; i < 5000; i++)
{
On Thu, 2019-05-23 at 04:21 +, Mike Brockus via Digitalmars-d-learn
wrote:
> […]
>
> That is cool that Atila was kind enough to accept the meson.build
> file. But how do I use the written meson.build that is
> apparently in the subdirectory directory "build"? Just asking
> because
30 matches
Mail list logo
