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fix floating point accuracy woes on certain hardware platforms

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This commit is contained in:
Dennis Luxen 2014-01-22 19:35:30 +01:00
parent f4bd175616
commit 058219528d
1 changed files with 6 additions and 0 deletions
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6
DataStructures/EdgeBasedNode.h
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@ -54,6 +54,12 @@ struct EdgeBasedNode {
q = y; q = y;
} }
nY = (d*p - c*q)/(a*d - b*c); nY = (d*p - c*q)/(a*d - b*c);
//discretize the result to coordinate precision. it's a hack!
if( std::abs(nY) < (1./COORDINATE_PRECISION) ) {
nY = 0.;
}
r = (p - nY*a)/c;// These values are actually n/m+n and m/m+n , we need r = (p - nY*a)/c;// These values are actually n/m+n and m/m+n , we need
// not calculate the explicit values of m an n as we // not calculate the explicit values of m an n as we
// are just interested in the ratio // are just interested in the ratio