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Re: [Axiom-mail] Turning an "Expression Float" into a Float?
From: |
Martin Rubey |
Subject: |
Re: [Axiom-mail] Turning an "Expression Float" into a Float? |
Date: |
19 May 2008 06:52:50 +0200 |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.4 |
"Alasdair McAndrew" <address@hidden> writes:
> The command
>
> integrate(exp(-x^2),x=0..1)
>
> produces an expression involving the error function. But how do I turn this
> into a single Float?
It seems to be a bug. Please file it on issuetracker, I'll try to fix it as
soon as possible. Quite likely, it's just not implemented, in which a quick
workaround is to use romberg:
(6) -> romberg(x+->exp(-x^2),0,1,0.1,0.1,10,100)
(6)
[value= 0.7468241328 1242702543, error= 0.4 E -19, totalpts= 2049,
success= true]
Type: Record(value: Float,error: Float,totalpts: Integer,success: Boolean)
Martin