std.math performance (SSE vs. real)

Paolo Invernizzi via Digitalmars-d digitalmars-d at puremagic.com
Sun Jun 29 01:44:22 PDT 2014


On Sunday, 29 June 2014 at 04:46:49 UTC, deadalnix wrote:
> On Sunday, 29 June 2014 at 04:38:31 UTC, H. S. Teoh via 
> Digitalmars-d wrote:
>> On Sat, Jun 28, 2014 at 05:16:53PM -0700, Walter Bright via 
>> Digitalmars-d wrote:
>>> On 6/28/2014 3:57 AM, Russel Winder via Digitalmars-d wrote:
>> [...]
>>> >Or indeed when calculating anything to do with money.
>>> 
>>> You're better off using 64 bit longs counting cents to 
>>> represent money
>>> than using floating point. But yeah, counting money has its 
>>> own
>>> special problems.
>>
>> For counting money, I heard that the recommendation is to use
>> fixed-point arithmetic (i.e. integer values in cents).
>>
>>
>> T
>
> MtGox was using float.

LOL ;-)

---
Paolo


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