Naive node.js faster than naive LDC2?

[Avrina]

On Sunday, 23 August 2020 at 02:18:19 UTC, Andrei Alexandrescu 
wrote:
> On 8/22/20 6:09 PM, Avrina wrote:
>> On Saturday, 22 August 2020 at 21:20:36 UTC, Andrei 
>> Alexandrescu wrote:
>>> On 8/22/20 3:34 PM, Avrina wrote:
>>>> On Saturday, 22 August 2020 at 19:20:34 UTC, Andrei 
>>>> Alexandrescu wrote:
>>>>> On 8/22/20 1:40 PM, kinke wrote:
>>>>>> On Saturday, 22 August 2020 at 16:15:14 UTC, H. S. Teoh 
>>>>>> wrote:
>>>>>>> 3) std.math.fmax calling the C library (involving a PIC 
>>>>>>> indirection to a
>>>>>>> shared library as opposed to inlineable native D code).
>>>>>>
>>>>>> Yes, and that's because there's only a `real` version for 
>>>>>> fmax.
>>>>>>
>>>>>> If upstream Phobos had proper double/float overloads, we 
>>>>>> could uncomment the LDC-specific implementations using 
>>>>>> LLVM intrinsics, which use (obviously much faster) SSE 
>>>>>> instructions:
>>>>>>
>>>>>> https://github.com/ldc-developers/phobos/blob/1366c7d5be65def916f030785fc1f1833342497d/std/math.d#L7785-L7798
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Number crunching in D could be significantly accelerated 
>>>>>> if the people interested in it showed some love for 
>>>>>> std.math, but we've had this topic for years.
>>>>>
>>>>> Ow, do we still suffer from that? Sigh.
>>>>>
>>>>> https://github.com/dlang/phobos/pull/7604/files
>>>>>
>>>>> It's 10 minutes of work - as much as writing a couple of 
>>>>> posts, and much more satisfactory.
>>>>
>>>> Cos, sin, tan, asin, acos, atan, etc.. There's still more, 
>>>> putting in the actual work that std.math needs is going to 
>>>> take more than 10 mins.
>>>
>>> 1. Linear time for small n is fine and does not affect the 
>>> argument.
>> 
>> What argument?
>> 
>>> 2. Incremental is still fine.
>> 
>> It can introduce subtle bugs and problems with precision, flip 
>> flopping between float, double, and real. If it is done all at 
>> once, it will only happen once, not every time someone feels 
>> like spend 10 mins doing a little bit of work to change one 
>> function. It really shouldn't have been implemented this way 
>> in the first place.
>> 
>>> 3. Work has actually be done by Nick Wilson in 
>>> https://github.com/dlang/phobos/pull/7463.
>> 
>> A dead pull request? Not unusual.
>
> You seem to derive good enjoyment out of making unkind comments.

I am an observer of truth, if you don't like the truth, look 
away; as it seems to be common place here anyways.