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Fast Log10 approximation

Started by guga, August 16, 2020, 06:01:01 AM

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jj2007

340     cycles for 100 * fsqrt Intel(R) Core(TM) i5-9400H (six_L)
660     cycles for 100 * fsqrt AMD Ryzen 5 3400G (Timo)
1545    cycles for 100 * fsqrt Intel(R) Core(TM) i7-4930K (Siekmanski)
1859    cycles for 100 * fsqrt Intel(R) Core(TM) i5-2450M (jj2007)


8 years of progress... but why did they pick fsqrt? The other timings are not so different :rolleyes:

Vortex

Quote from: TouEnMasm on September 03, 2020, 01:54:40 AM

Quote
I suggest you move your crappy AV software into the recycle bin.
You surely speak of Windows 10 Familial edition ,on a perfectly standard UC (4Go Mem,1 tera disk)

Hi ToutEnMasm,

Could you try exclude the false-positives in your antivirus settings?

jj2007

#62
Any other candidates, i.e. slow math functions that deserve a speed boost?