CRAN Package Check Results for Package expm

Last updated on 2016-07-29 20:49:27.

Flavor Version Tinstall Tcheck Ttotal Status Flags
r-devel-linux-x86_64-debian-clang 0.999-0 4.66 55.79 60.46 OK
r-devel-linux-x86_64-debian-gcc 0.999-0 4.61 52.62 57.23 OK
r-devel-linux-x86_64-fedora-clang 0.999-0 111.63 OK
r-devel-linux-x86_64-fedora-gcc 0.999-0 103.87 OK
r-devel-osx-x86_64-clang 0.999-0 88.19 OK
r-devel-windows-ix86+x86_64 0.999-0 22.00 132.00 154.00 OK
r-patched-linux-x86_64 0.999-0 5.31 59.91 65.21 OK
r-patched-solaris-sparc 0.999-0 675.90 ERROR
r-patched-solaris-x86 0.999-0 139.30 OK
r-release-linux-x86_64 0.999-0 5.23 61.56 66.79 OK
r-release-osx-x86_64-mavericks 0.999-0 OK
r-release-windows-ix86+x86_64 0.999-0 26.00 163.00 189.00 OK
r-oldrel-windows-ix86+x86_64 0.999-0 34.00 180.00 214.00 OK

Check Details

Version: 0.999-0
Check: examples
Result: ERROR
    Running examples in ‘expm-Ex.R’ failed
    The error most likely occurred in:
    
    > ### Name: logm
    > ### Title: Matrix Logarithm
    > ### Aliases: logm
    > ### Keywords: algebra math
    >
    > ### ** Examples
    >
    > m <- diag(2)
    > logm(m)
     [,1] [,2]
    [1,] 0 0
    [2,] 0 0
    > expm(logm(m))
     [,1] [,2]
    [1,] 1 0
    [2,] 0 1
    >
    > ## Here, logm() is barely defined, and Higham08 has needed an amendment
    > ## in order for not to loop forever:
    > D0 <- diag(x=c(1, 0.))
    > (L. <- logm(D0))
    Warning in logm.Higham08(x) :
     Inverse scaling did not work (t = 1).
    The matrix logarithm may not exist for this matrix.Setting m = 3 arbitrarily.
     [,1] [,2]
    [1,] 0 0
    [2,] 0 -9576994
    > stopifnot( all.equal(D0, expm(L.)) )
    >
    > ## A matrix for which clearly no logm(.) exists:
    > (m <- cbind(1:2, 1))
     [,1] [,2]
    [1,] 1 1
    [2,] 2 1
    > (l.m <- logm(m)) ## all NA
    Warning in sqrt(S[ij, ij]) : NaNs produced
    Error in solve.default(X[ii, ii] + X[ij, ij], S[ii, ij] - sumU) :
     system is computationally singular: reciprocal condition number = 0
    Calls: logm ... logm.Higham08 -> rootS -> solve -> solve -> solve.default
    Execution halted
Flavor: r-patched-solaris-sparc