ALAERH is an error handler for the LAPACK routines.  It prints the


 header if this is the first error message and prints the error code


 and form of recovery, if any.  The character evaluations in this


 routine may make it slow, but it should not be called once the LAPACK


 routines are fully debugged.

PATH

          PATH is CHARACTER*3


          The LAPACK path name of subroutine SUBNAM.

SUBNAM

          SUBNAM is CHARACTER*(*)


          The name of the subroutine that returned an error code.

INFO

          INFO is INTEGER


          The error code returned from routine SUBNAM.

INFOE

          INFOE is INTEGER


          The expected error code from routine SUBNAM, if SUBNAM were


          error-free.  If INFOE = 0, an error message is printed, but


          if INFOE.NE.0, we assume only the return code INFO is wrong.

OPTS

          OPTS is CHARACTER*(*)


          The character options to the subroutine SUBNAM, concatenated


          into a single character string.  For example, UPLO = 'U',


          TRANS = 'T', and DIAG = 'N' for a triangular routine would


          be specified as OPTS = 'UTN'.

M

          M is INTEGER


          The matrix row dimension.

N

          N is INTEGER


          The matrix column dimension.  Accessed only if PATH = xGE or


          xGB.

KL

          KL is INTEGER


          The number of sub-diagonals of the matrix.  Accessed only if


          PATH = xGB, xPB, or xTB.  Also used for NRHS for PATH = xLS.

KU

          KU is INTEGER


          The number of super-diagonals of the matrix.  Accessed only


          if PATH = xGB.

N5

          N5 is INTEGER


          A fifth integer parameter, may be the blocksize NB or the


          number of right hand sides NRHS.

IMAT

          IMAT is INTEGER


          The matrix type.

NFAIL

          NFAIL is INTEGER


          The number of prior tests that did not pass the threshold;


          used to determine if the header should be printed.

NERRS

          NERRS is INTEGER


          On entry, the number of errors already detected; used to


          determine if the header should be printed.


          On exit, NERRS is increased by 1.

NOUT

          NOUT is INTEGER


          The unit number on which results are to be printed.

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