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MathGroup Archive 2002

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Re: Question regarding Compile

  • To: mathgroup at
  • Subject: [mg33698] Re: Question regarding Compile
  • From: Jens-Peer Kuska <kuska at>
  • Date: Tue, 9 Apr 2002 01:02:01 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <a8m33c$oaq$>
  • Reply-to: kuska at
  • Sender: owner-wri-mathgroup at

Madhusudan Singh wrote:
> I apologise if this question (or something like this) has been asked
> earlier.
> I have a slew of functions like :
> f1[p1_,p2_,p3_]:= <some fn.>
> f2, f3 similarly defined.
> f5[x_,y_,z_]:=F(f1[..],f2[..],f3[..],f4[..]);
> Now, this particular computation proceeds very slowly and I wish to speed
> it up by compiling my functions. However, the very syntax of Compile
> indicates that I cannot invoke a Compile'd function and pass arguments to
> it.

You can not do *what* ? and what may

f5 = Compile[{{x, _Real}}, Sin[x]]

f[x_] := x^2

Plot[f[f5[x]], {x, 0, Pi}]

do ?

and what does

f6 = Compile[{{x, _Real}}, f5[x]^2]

Plot[f6[x], {x, 0, Pi}]

> For instance,
> f1=Compile[{p1,p2,p3}, <some expression>] cannot be used in f5 above the
> way I have been doing. 

What *is* the way you are using ? if you can't call a compiled function
from a compiled function ?


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