devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

fix compilation in stable norm, move a platform check to the unit tests

Browse Source
This commit is contained in:
Gael Guennebaud
2009-10-06 10:24:41 +02:00
parent 904f35d194
commit 4cf7366027
2 changed files with 19 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
test/stable_norm.cpp
View File

@@ -33,6 +33,21 @@ template<typename MatrixType> void stable_norm(const MatrixType& m)
typedef typename MatrixType::Scalar Scalar;
typedef typename NumTraits<Scalar>::Real RealScalar;
// Check the basic machine-dependent constants.
{
int nbig, ibeta, it, iemin, iemax, iexp;
RealScalar abig, eps;
ibeta = std::numeric_limits<RealScalar>::radix; // base for floating-point numbers
it = std::numeric_limits<RealScalar>::digits; // number of base-beta digits in mantissa
iemin = std::numeric_limits<RealScalar>::min_exponent; // minimum exponent
iemax = std::numeric_limits<RealScalar>::max_exponent; // maximum exponent
VERIFY( (!(iemin > 1 - 2*it || 1+it>iemax || (it==2 && ibeta<5) || (it<=4 && ibeta <= 3 ) || it<2))
&& "the stable norm algorithm cannot be guaranteed on this computer");
}
int rows = m.rows();
int cols = m.cols();