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bug #698: rewrite LinSpaced for integer scalar types to avoid overflow and guarantee an even spacing when possible.

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Otherwise, the "high" bound is implicitly lowered to the largest value allowing for an even distribution.
This changeset also disable vectorization for this integer path.
This commit is contained in:
Gael Guennebaud
2016-10-24 15:50:27 +02:00
parent e8e56c7642
commit 53c77061f0
4 changed files with 62 additions and 31 deletions
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8
doc/snippets/DenseBase_LinSpacedInt.cpp Normal file
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cout << "Even spacing inputs:" << endl;
cout << VectorXi::LinSpaced(8,1,4).transpose() << endl;
cout << VectorXi::LinSpaced(8,1,8).transpose() << endl;
cout << VectorXi::LinSpaced(8,1,15).transpose() << endl;
cout << "Uneven spacing inputs:" << endl;
cout << VectorXi::LinSpaced(8,1,7).transpose() << endl;
cout << VectorXi::LinSpaced(8,1,9).transpose() << endl;
cout << VectorXi::LinSpaced(8,1,16).transpose() << endl;