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Blitz Support : |
From: daniel.egloff_at_[hidden]
Date: 2005-05-31 05:16:37
Dear Blitz List
how can I make the following loop dimension independent, e.g. the
dimension 4 should be variable, but compile time fixed.
blitz::Array<double,4> array; // zero based
for (int i = array.lbound(blitz::firstDim); i <=
array.ubound(blitz::firstDim); i++)
{
for (int j = array.lbound(blitz::secondDim); j <=
array.ubound(blitz::secondDim); j++)
{
for (int k = array.lbound(blitz::thirdDim); k <=
array.ubound(blitz::thirdDim); k++)
{
blitz::Array<double,4> slice =
array(i,j,k,blitz::Range::all());
// apply some function f on the slice which does some
operation on all element of slice as a whole
// e.g. inplace sort of all the elements slice(0),
... slice(slice.extent(firstDim))
sort(slice);
}
}
}
a related question: how can I make the following loop dimension
independent:
blitz::Array<double,3> array;
for (int i = array.lbound(blitz::firstDim); i <=
array.ubound(blitz::firstDim); i++)
{
for (int j = array.lbound(blitz::secondDim); j <=
array.ubound(blitz::secondDim); j++)
{
for (int k = array.lbound(blitz::thirdDim); k <=
array.ubound(blitz::thirdDim); k++)
{
// apply a function to every array element,
depending on its indices
f(i,j,k, array(i,j,k));
}
}
}
I think the second problem is related to functors. Whats about the
first?
Any help greatly appreciated.
Regards,
Daniel Egloff
Zürcher Kantonalbank, VFEF
Josefstrasse 222, 8005 Zürich
Tel. +41 (0) 44 292 45 33, Fax +41 (0) 44 292 45 93
Briefadresse: Postfach, 8010 Zürich, http://www.zkb.ch
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