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The SparseMatrixCSC type has two integer fields, `colptr` and `rowval` that are used to determine positions in the matrix. In Julia these are 1-based. Usually in C libraries these are 0-based. It i…
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(edit: now named `lufact(rand(33,33))`)
`julia>lud(rand(33))` ok!
but (see also #1543)
``` julia
julia>lud(rand(34))
0x065D2EE3 (0x0062F810 0x00000000 0x004FC9F8 0x0EBD01C0), LAPACKE_csyr_work() +
…
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@ViralBShah has suggested that all the code that ends up calling
``` julia
ccall(dlsym(_jl_liblpack, ...) ...)
```
which includes much of the current base/linalg_lapack.jl and base/linalg_factoriza…
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``` python
from casadi import *
t=ssym("t")
x=ssym("x")
rx=ssym("rx")
p=ssym("p")
dp=ssym("dp")
z=ssym("z")
rz=ssym("rz")
rp=ssym("rp")
f = SXFunction(daeIn(**{'x': x, 'z': z}),daeOut(**{'alg': x-z, …
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When I build Julia on my Ubuntu 12.04.1 LTS x86_64 system I get a bunch of messages like the following:
./qrdemo: error while loading shared libraries: libopenblas.so.0: cannot open shared object fil…
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This is not the correct place for this question, but as this project has no mailing list, I don't know where else to post it.
I need to factor some rather large matrices (300,000 examples and 30,000 …
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The attached patch (based on 4.3.rc0):
- changes Cholesky (all/most matrices) and SVD, QR and LU factorizations (double_dense only) so that the returned resulting matrices are immutable
- adds cach…
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The matrix eigenspaces() function is broken for rings over SR since the algorithm iterates over factors of the characteristic polynomial. "for e,f in mat.charpoly().factor()" works for matrices over…