46 lines
1.0 KiB
C++
46 lines
1.0 KiB
C++
// Copyright 2004, Ondra Kamenik
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#include "tl_static.hh"
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#include "pascal_triangle.hh"
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#include "tl_exception.hh"
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#include <mutex>
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#include <limits>
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#include <cmath>
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/* Note that we allow for repeated calls of |init|. This is not normal
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and the only purpose of allowing this is the test suite. */
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namespace TLStatic
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{
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EquivalenceBundle ebundle(1);
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PermutationBundle pbundle(1);
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std::mutex mut;
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const EquivalenceSet &
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getEquiv(int n)
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{
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return ebundle.get(n);
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}
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const PermutationSet &
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getPerm(int n)
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{
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return pbundle.get(n);
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}
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void
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init(int dim, int nvar)
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{
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// Check that tensor indices will not overflow (they are stored as signed int, hence on 31 bits)
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if (std::log2(nvar)*dim > std::numeric_limits<int>::digits)
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throw TLException(__FILE__, __LINE__, "Problem too large, you should decrease the approximation order");
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std::lock_guard<std::mutex>{mut};
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ebundle.generateUpTo(dim);
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pbundle.generateUpTo(dim);
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PascalTriangle::ensure(nvar, dim);
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}
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}
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