• using R version 2.11.0 Under development (unstable) (2010-01-14 r50981)
• using session charset: UTF-8
• checking for file 'mixAK/DESCRIPTION' ... OK
• this is package 'mixAK' version '0.6'
• checking package dependencies ... OK
• checking if this is a source package ... OK
• checking for executable files ... OK
• checking whether package 'mixAK' can be installed ... OK
• checking package directory ... OK
• checking for portable file names ... OK
• checking for sufficient/correct file permissions ... OK
• checking DESCRIPTION meta-information ... OK
• checking top-level files ... OK
• checking index information ... OK
• checking package subdirectories ... OK
• checking R files for non-ASCII characters ... OK
• checking R files for syntax errors ... OK
• checking whether the package can be loaded ... OK
• checking whether the package can be loaded with stated dependencies ... OK
• checking whether the package can be unloaded cleanly ... OK
• checking for unstated dependencies in R code ... OK
• checking S3 generic/method consistency ... OK
• checking replacement functions ... OK
• checking foreign function calls ... OK
• checking R code for possible problems ... OK
• checking Rd files ... OK
• checking Rd metadata ... OK
• checking Rd cross-references ... OK
• checking for missing documentation entries ... OK
• checking for code/documentation mismatches ... OK
• checking Rd \usage sections ... OK
• checking data for non-ASCII characters ... OK
• checking line endings in C/C++/Fortran sources/headers ... OK
• checking line endings in Makefiles ... OK
• checking for portable compilation flags in Makevars ... OK
• checking for portable use of $BLAS_LIBS ... OK
• checking examples ... ERROR
  Running examples in 'mixAK-Ex.R' failed.
  The error most likely occurred in:
  
  > ### * MatSqrt
  >
  > flush(stderr()); flush(stdout())
  >
  > ### Name: MatSqrt
  > ### Title: Square root of a matrix
  > ### Aliases: MatSqrt
  > ### Keywords: array algebra
  >
  > ### ** Examples
  >
  > MatSqrt(0:4)
  [1] 0.000000 1.000000 1.414214 1.732051 2.000000
  > MatSqrt((-4):0)
  [1] 0+2.000000i 0+1.732051i 0+1.414214i 0+1.000000i 0+0.000000i
  > MatSqrt(c(-1, 1, -2, 2))
  [1] 0.000000+1.000000i 1.000000+0.000000i 0.000000+1.414214i 1.414214+0.000000i
  >
  > A <- (1:4) %*% t(1:4)
  > sqrtA <- MatSqrt(A)
  > sqrtA
  [,1] [,2] [,3] [,4]
  [1,] 0.1825742 0.3651484 0.5477226 0.7302967
  [2,] 0.3651484 0.7302968 1.0954451 1.4605935
  [3,] 0.5477226 1.0954451 1.6431677 2.1908902
  [4,] 0.7302967 1.4605935 2.1908902 2.9211870
  > round(sqrtA %*% sqrtA - A, 13)
  [,1] [,2] [,3] [,4]
  [1,] 0 0 0 0
  [2,] 0 0 0 0
  [3,] 0 0 0 0
  [4,] 0 0 0 0
  >
  > B <- -A
  > sqrtB <- MatSqrt(B)
  Warning in MatSqrt(B) : AK_LAPACK::iinvComplexGE: LAPACK zgesv failed.
  Warning in MatSqrt(B) :
  AK_LAPACK::spevGE2GE: invComplexGE subroutine failed.
  Warning in MatSqrt(B) : AK_LAPACK::sqrtGE: spevGE2GE subroutine failed.
  Error in MatSqrt(B) : Matrix square root not computed.
  Execution halted