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SciRuby/nmatrix

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lib/nmatrix/atlas.rb

Summary

Maintainability
D
1 day
Test Coverage

Method geev has a Cognitive Complexity of 39 (exceeds 5 allowed). Consider refactoring.
Open

      def geev(matrix, which=:both)
        raise(StorageTypeError, "LAPACK functions only work on dense matrices") \
         unless matrix.dense?

        raise(ShapeError, "eigenvalues can only be computed for square matrices") \
Severity: Minor
Found in lib/nmatrix/atlas.rb - About 5 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method geev has 61 lines of code (exceeds 25 allowed). Consider refactoring.
Open

      def geev(matrix, which=:both)
        raise(StorageTypeError, "LAPACK functions only work on dense matrices") \
         unless matrix.dense?

        raise(ShapeError, "eigenvalues can only be computed for square matrices") \
Severity: Major
Found in lib/nmatrix/atlas.rb - About 2 hrs to fix

    Method posv has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.
    Open

          def posv(uplo, a, b)
        raise(ShapeError, "a must be square") unless a.dim == 2 \
         && a.shape[0] == a.shape[1]

        raise(ShapeError, "number of rows of b must equal number of cols of a") \
    Severity: Minor
    Found in lib/nmatrix/atlas.rb - About 1 hr to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Method invert! has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
    Open

      def invert!
    raise(StorageTypeError, "invert only works on dense matrices currently") \
     unless self.dense?

    raise(ShapeError, "Cannot invert non-square matrix") \
    Severity: Minor
    Found in lib/nmatrix/atlas.rb - About 35 mins to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Identical blocks of code found in 2 locations. Consider refactoring.
    Open

            if !matrix.complex_dtype?
          complex_indices = []
          n.times do |i|
            complex_indices << i if imag_eigenvalues[i] != 0.0
          end
    Severity: Major
    Found in lib/nmatrix/atlas.rb and 1 other location - About 4 hrs to fix
    lib/nmatrix/lapacke.rb on lines 110..131

    Duplicated Code

    Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

    Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

    When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

    Tuning

    This issue has a mass of 149.

    We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

    The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

    If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

    See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

    Refactorings

    Further Reading

    Similar blocks of code found in 2 locations. Consider refactoring.
    Open

      def potrf!(which)
    raise(StorageTypeError, "ATLAS functions only work on dense matrices") \
     unless self.dense?
    raise(ShapeError, "Cholesky decomposition only valid for square matrices") \
     unless self.dim == 2 && self.shape[0] == self.shape[1]
    Severity: Minor
    Found in lib/nmatrix/atlas.rb and 1 other location - About 45 mins to fix
    lib/nmatrix/lapacke.rb on lines 191..195

    Duplicated Code

    Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

    Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

    When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

    Tuning

    This issue has a mass of 40.

    We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

    The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

    If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

    See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

    Refactorings

    Further Reading

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