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multishift conjugate gradient added and a strong test: take a diagonal

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but non-identity matrix
l1 0  0  0 ....
0  l2 0  0 ....
0  0  l3 0 ...
.  .   .
.  .   .
.  .   .

And apply the multishift CG to it. Sum the poles and residues.
Insist that this be the same as the exactly taken square root
where l1,l2,l3 >= 0.
This commit is contained in:
Azusa Yamaguchi
2015-06-08 11:52:44 +01:00
parent 351c2905f5
commit 8688ff8b3a
11 changed files with 453 additions and 54 deletions
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9
lib/algorithms/approx/Remez.h
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@ -125,8 +125,17 @@ class AlgRemez
// Destructor
virtual ~AlgRemez();
int getDegree(void){
assert(n==d);
return n;
}
// Reset the bounds of the approximation
void setBounds(double lower, double upper);
// Reset the bounds of the approximation
void getBounds(double &lower, double &upper) {
lower=(double)apstrt;
upper=(double)apend;
}
// Generate the rational approximation x^(pnum/pden)
double generateApprox(int num_degree, int den_degree,