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Make cond(::SparseMatrix, 1 / Inf) discoverable from 2-norm error #629

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Merged
merged 3 commits into from
Aug 8, 2025
Merged

Make cond(::SparseMatrix, 1 / Inf) discoverable from 2-norm error #629

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0f636d2
Make cond(::SparseMatrix, 1/Inf) discoverable from 2-norm error
Antoinemarteau May 27, 2025
8001c0f
Update src/linalg.jl
ViralBShah Aug 8, 2025
ea91819
Merge branch 'main' into main
ViralBShah Aug 8, 2025
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2 changes: 1 addition & 1 deletion src/linalg.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -1577,7 +1577,7 @@ function cond(A::AbstractSparseMatrixCSC, p::Real=2)
normA = opnorm(A, Inf)
return normA * normAinv
elseif p == 2
throw(ArgumentError("2-norm condition number is not implemented for sparse matrices, try cond(Array(A), 2) instead"))
throw(ArgumentError("only 1- and Inf-norm condition number are implemented for sparse matrices, for 2-norm try cond(Array(A), 2) instead"))
else
throw(ArgumentError("second argument must be either 1 or Inf, got $p"))
end
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