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Re: speed

  • To: mathgroup at
  • Subject: [mg15615] Re: speed
  • From: "Yves Gauvreau" <gauy at>
  • Date: Sat, 30 Jan 1999 04:28:19 -0500 (EST)
  • References: <77utg2$> <78pbv2$>
  • Sender: owner-wri-mathgroup at

I don't know how to increase the speed of Mathematica. But I can suggest
this insted of the Do loop try x = x * 1.003456^1000000 and this take a
fraction of a second to compute.


Margit wrote in message <78pbv2$d0t at>...
>I have a question concerning the numerical speed of Mathematica:
>I performed the following calculation
>x=0.3;Print[x]; Do[x=x*1.003456,{i,1,1000000}];Print[x]
>with Mathematica, it took about 150 seconds.
>The same calculation is performed by TurboPascal in 0.4 seconds.
>I guess that the difference is caused by the working precision. Does
>anyone know what is the reason for this long duration and how it can be

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