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LAST BUILD ON BRANCH cjh/linalg-refactor
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Jiahao Chen 
General cleanup of linear algebra routines

- Better error messages
  - [x] Use meaningful `Exception` in `Base.cov`
  - [x] Change generic `error()` calls to `throw(DimensionMismatch(""))`
    where appropriate
  - [x] Interpolate invalid values into error messages
- Generic error handlers for consistent error handling
  - [x] Generic LAPACK error handlers
    - [x] `@assertargsok` throws `ArgumentError`s on negative `info` statuses
    - [x] `@lapackerror` adds throwing `LAPACKExceptions` on positive
      `info` statuses
    - [x] `assertnonsingular`, `assertposdef` throw `SingularError`s and
      `PosDefException`s on positive `info` codes
  - [x] Eliminate generic `error`s for exceptions, esp `KeyError`s in
    `getindex` methods
  - [x] Generic `umferror()` error handler for UMFPACK
    - maps UMFPACK errors to native Julian `Exception`s where
      appropriate
    - maps UMPPACK warnings to throwing `IllConditionedMatrixException`s
  - [x] Remove `info`s as returned quantities from LAPACK wrappers
    (except for `getrf!`, `potrf!`, `pstrf!`, where this is useful for
    higher level routines in `LinAlg`)
- throw `MatrixIllConditionedException` on UMFPACK warnings
- Better error detection
  - [x] Inserts more checks for singular elements in `Diagonal` matrix
    algebra where necessary.
- Genericizing input and output validation
  - [x] Replace square matrix checks with `chksquare`
  - [x] Add macros to simplify testing for bad matrices
    - `@assertrank`, `@assertrank2`: rank deficiency
    - `@assertnonsingular`: singular matrices
    - `@assertposdef`: positive definiteness
  - [x] Add mode validation for `uplo` with `@chkuplo`
  - [x] Add `@isok()` macros to simplify status variable interpretation in
    UMFPACK and CHOLMOD
- Simplify code
  - [x] Convert simple functions to one-liners
  - [x] Collapse simple `if/else` branches to ternary `?:`s
  - [x] Collapse nested loops using `for i=..., j=...` multiple loop syntax
  - [x] Remove trai... (continued)

4601 of 4880 relevant lines covered (94.28%)

6.45 hits per line

Relevant lines Covered
4880 RELEVANT LINES 4601 COVERED LINES
6.45 HITS PER LINE
Source Files on cjh/linalg-refactor
Coverage ∆ File Lines Relevant Covered Missed Hits/Line

Recent builds

Builds Branch Commit Type Ran Committer Via Coverage
6627 cjh/linalg-refactor General cleanup of linear algebra routines - Better error messages - [x] Use meaningful `Exception` in `Base.cov` - [x] Change generic `error()` calls to `throw(DimensionMismatch(""))` where appropriate - [x] Interpolate invalid values ... push Jiahao Chen travis-ci pending completion  
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