Provided by: liblapack-doc_3.11.0-2build1_all bug

NAME

       aux_blas - Auxiliary BLAS

SYNOPSIS

   Functions
       integer function icamax (N, CX, INCX)
           ICAMAX
       integer function idamax (N, DX, INCX)
           IDAMAX
       integer function isamax (N, SX, INCX)
           ISAMAX
       integer function izamax (N, ZX, INCX)
           IZAMAX
       logical function lsame (CA, CB)
           LSAME
       subroutine xerbla (SRNAME, INFO)
           XERBLA
       subroutine xerbla_array (SRNAME_ARRAY, SRNAME_LEN, INFO)
           XERBLA_ARRAY

Detailed Description

       This is the group of Auxiliary 3 BLAS routines.

Function Documentation

   integer function icamax (integer N, complex, dimension(*) CX, integer INCX)
       ICAMAX

       Purpose:

               ICAMAX finds the index of the first element having maximum |Re(.)| + |Im(.)|

       Parameters
           N

                     N is INTEGER
                    number of elements in input vector(s)

           CX

                     CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

           INCX

                     INCX is INTEGER
                    storage spacing between elements of CX

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Further Details:

                jack dongarra, linpack, 3/11/78.
                modified 3/93 to return if incx .le. 0.
                modified 12/3/93, array(1) declarations changed to array(*)

   integer function idamax (integer N, double precision, dimension(*) DX, integer INCX)
       IDAMAX

       Purpose:

               IDAMAX finds the index of the first element having maximum absolute value.

       Parameters
           N

                     N is INTEGER
                    number of elements in input vector(s)

           DX

                     DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

           INCX

                     INCX is INTEGER
                    storage spacing between elements of DX

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Further Details:

                jack dongarra, linpack, 3/11/78.
                modified 3/93 to return if incx .le. 0.
                modified 12/3/93, array(1) declarations changed to array(*)

   integer function isamax (integer N, real, dimension(*) SX, integer INCX)
       ISAMAX

       Purpose:

               ISAMAX finds the index of the first element having maximum absolute value.

       Parameters
           N

                     N is INTEGER
                    number of elements in input vector(s)

           SX

                     SX is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

           INCX

                     INCX is INTEGER
                    storage spacing between elements of SX

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Further Details:

                jack dongarra, linpack, 3/11/78.
                modified 3/93 to return if incx .le. 0.
                modified 12/3/93, array(1) declarations changed to array(*)

   integer function izamax (integer N, complex*16, dimension(*) ZX, integer INCX)
       IZAMAX

       Purpose:

               IZAMAX finds the index of the first element having maximum |Re(.)| + |Im(.)|

       Parameters
           N

                     N is INTEGER
                    number of elements in input vector(s)

           ZX

                     ZX is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

           INCX

                     INCX is INTEGER
                    storage spacing between elements of ZX

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Further Details:

                jack dongarra, 1/15/85.
                modified 3/93 to return if incx .le. 0.
                modified 12/3/93, array(1) declarations changed to array(*)

   logical function lsame (character CA, character CB)
       LSAME

       Purpose:

            LSAME returns .TRUE. if CA is the same letter as CB regardless of
            case.

       Parameters
           CA

                     CA is CHARACTER*1

           CB

                     CB is CHARACTER*1
                     CA and CB specify the single characters to be compared.

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

   subroutine xerbla (character*(*) SRNAME, integer INFO)
       XERBLA

       Purpose:

            XERBLA  is an error handler for the LAPACK routines.
            It is called by an LAPACK routine if an input parameter has an
            invalid value.  A message is printed and execution stops.

            Installers may consider modifying the STOP statement in order to
            call system-specific exception-handling facilities.

       Parameters
           SRNAME

                     SRNAME is CHARACTER*(*)
                     The name of the routine which called XERBLA.

           INFO

                     INFO is INTEGER
                     The position of the invalid parameter in the parameter list
                     of the calling routine.

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

   subroutine xerbla_array (character(1), dimension(srname_len) SRNAME_ARRAY, integer SRNAME_LEN,
       integer INFO)
       XERBLA_ARRAY

       Purpose:

            XERBLA_ARRAY assists other languages in calling XERBLA, the LAPACK
            and BLAS error handler.  Rather than taking a Fortran string argument
            as the function's name, XERBLA_ARRAY takes an array of single
            characters along with the array's length.  XERBLA_ARRAY then copies
            up to 32 characters of that array into a Fortran string and passes
            that to XERBLA.  If called with a non-positive SRNAME_LEN,
            XERBLA_ARRAY will call XERBLA with a string of all blank characters.

            Say some macro or other device makes XERBLA_ARRAY available to C99
            by a name lapack_xerbla and with a common Fortran calling convention.
            Then a C99 program could invoke XERBLA via:
               {
                 int flen = strlen(__func__);
                 lapack_xerbla(__func__, &flen, &info);
               }

            Providing XERBLA_ARRAY is not necessary for intercepting LAPACK
            errors.  XERBLA_ARRAY calls XERBLA.

       Parameters
           SRNAME_ARRAY

                     SRNAME_ARRAY is CHARACTER(1) array, dimension (SRNAME_LEN)
                     The name of the routine which called XERBLA_ARRAY.

           SRNAME_LEN

                     SRNAME_LEN is INTEGER
                     The length of the name in SRNAME_ARRAY.

           INFO

                     INFO is INTEGER
                     The position of the invalid parameter in the parameter list
                     of the calling routine.

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

Author

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