Displaying 1 result from an estimated 1 matches for "lagenmatdouble".
2002 Mar 05
1
Matrix identification bug (PR#1361)
...n Matrix package and it
turned out that
is.MMatrix() failed to return true.
Hence
if (checkClass(classes, "Hermitian"))
return new LaSymmMatDouble(x);
is not executed in static LaMatDouble* asLaMatrix(SEXP x). Instead
if (isMatrix(x)) {
return new LaGenMatDouble(x);
}
is used.
After replaced
return new LaGenMatDouble(x);
with
return new LaSymmMatDouble(x);
the result was (PIII Xeon 1GHz RedHat 7.2 Linux))
> system.time(solve.Matrix(Toeplitz(.5^seq(0,999))))
[1] 9.76 0.22 9.97 0.00 0.00
Clearly there are some bugs in solve() and...