Initial version of compability layer.
Compability layer header file.
Quadratic root solver.
Functions for Givens rotations and bidiagonal SVD.
New public and internal functions.
New flag values.
New files.
New tests.
Some performance tests for Givens functions.
Multiply or solve with diagonal matrix.
Protect with ABS().
New flags and configuration parameter for tolerances.
New unsafe operators.
New QR/QL iterators.
New functions.
Demmel-Kahan bidiagonal QR.
Golub-Kahan bidiagonal QR.
Support for Demmel-Kahan QR.
Support for backward updates.
Symmetric 2x2 eigen functions.