50 lines
1.5 KiB
Plaintext
50 lines
1.5 KiB
Plaintext
@q $Id: faa_di_bruno.hweb 744 2006-05-09 13:16:07Z kamenik $ @>
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@q Copyright 2005, Ondra Kamenik @>
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@*2 Faa Di Bruno evaluator. Start of {\tt faa\_di\_bruno.h} file.
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This defines a class which implements Faa Di Bruno Formula
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$$\left[B_{s^k}\right]_{\alpha_1\ldots\alpha_l}=\left[f_{z^l}\right]_{\beta_1\ldots\beta_l}
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\sum_{c\in M_{l,k}}\prod_{m=1}^l\left[z_{s^k(c_m)}\right]^{\beta_m}_{c_m(\alpha)}$$
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where $s^k$ is a general symmetry of dimension $k$ and $z$ is a stack of functions.
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@s FaaDiBruno int
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@c
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#ifndef FAA_DI_BRUNO_H
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#define FAA_DI_BRUNO_H
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#include "journal.h"
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#include "stack_container.h"
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#include "t_container.h"
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#include "sparse_tensor.h"
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#include "gs_tensor.h"
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@<|FaaDiBruno| class declaration@>;
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#endif
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@ Nothing special here. See |@<|FaaDiBruno::calculate| folded sparse
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code@>| for reason of having |magic_mult|.
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@<|FaaDiBruno| class declaration@>=
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class FaaDiBruno {
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Journal& journal;
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public:@;
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FaaDiBruno(Journal& jr)
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: journal(jr)@+ {}
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void calculate(const StackContainer<FGSTensor>& cont, const TensorContainer<FSSparseTensor>& f,
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FGSTensor& out);
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void calculate(const FoldedStackContainer& cont, const FGSContainer& g,
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FGSTensor& out);
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void calculate(const StackContainer<UGSTensor>& cont, const TensorContainer<FSSparseTensor>& f,
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UGSTensor& out);
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void calculate(const UnfoldedStackContainer& cont, const UGSContainer& g,
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UGSTensor& out);
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protected:@;
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int estimRefinment(const TensorDimens& tdims, int nr, int l, int& avmem_mb, int& tmpmem_mb);
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static double magic_mult;
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};
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@ End of {\tt faa\_di\_bruno.h} file.
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