RE: [ROOT] TMethodCall question

From: Philippe Canal (pcanal@fnal.gov)
Date: Tue Nov 18 2003 - 22:40:26 MET

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Hi Thomas,

What are you trying to accomplish (your not really trying to call 'cos' via
the interpreter, are you)?

Anyway, you are not doing any 'wrong' except that cos, sin, and some of the
other function of the C library are treated in a special manner that disable
their use
via a CINT's G__CallFunc (implementation used by TMethodCall).

However I am not thinking of a case where this would really be an issue
(i.e. where you would really want to use TMethodCall to call cos).

Cheers,
Philippe.

-----Original Message-----
From: owner-roottalk@pcroot.cern.ch
[mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Thomas Bretz
Sent: Monday, November 17, 2003 4:45 PM
To: roottalk@pcroot.cern.ch
Subject: [ROOT] TMethodCall question


Dear all,

what is wrong with:
TMethodCall call("cos", "0.55");
Double_t result;
call.Execute(&result);

I cannot get the correct result for cos(0.55) or similar...

Thanks in advnce,
Thomas.

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