--- 
:name: zgecon
:md5sum: 57c09e654b5c310f1726f52961a7ca80
:category: :subroutine
:arguments: 
- norm: 
    :type: char
    :intent: input
- n: 
    :type: integer
    :intent: input
- a: 
    :type: doublecomplex
    :intent: input
    :dims: 
    - lda
    - n
- lda: 
    :type: integer
    :intent: input
- anorm: 
    :type: doublereal
    :intent: input
- rcond: 
    :type: doublereal
    :intent: output
- work: 
    :type: doublecomplex
    :intent: workspace
    :dims: 
    - 2*n
- rwork: 
    :type: doublereal
    :intent: workspace
    :dims: 
    - 2*n
- info: 
    :type: integer
    :intent: output
:substitutions: {}

:fortran_help: "      SUBROUTINE ZGECON( NORM, N, A, LDA, ANORM, RCOND, WORK, RWORK, INFO )\n\n\
  *  Purpose\n\
  *  =======\n\
  *\n\
  *  ZGECON estimates the reciprocal of the condition number of a general\n\
  *  complex matrix A, in either the 1-norm or the infinity-norm, using\n\
  *  the LU factorization computed by ZGETRF.\n\
  *\n\
  *  An estimate is obtained for norm(inv(A)), and the reciprocal of the\n\
  *  condition number is computed as\n\
  *     RCOND = 1 / ( norm(A) * norm(inv(A)) ).\n\
  *\n\n\
  *  Arguments\n\
  *  =========\n\
  *\n\
  *  NORM    (input) CHARACTER*1\n\
  *          Specifies whether the 1-norm condition number or the\n\
  *          infinity-norm condition number is required:\n\
  *          = '1' or 'O':  1-norm;\n\
  *          = 'I':         Infinity-norm.\n\
  *\n\
  *  N       (input) INTEGER\n\
  *          The order of the matrix A.  N >= 0.\n\
  *\n\
  *  A       (input) COMPLEX*16 array, dimension (LDA,N)\n\
  *          The factors L and U from the factorization A = P*L*U\n\
  *          as computed by ZGETRF.\n\
  *\n\
  *  LDA     (input) INTEGER\n\
  *          The leading dimension of the array A.  LDA >= max(1,N).\n\
  *\n\
  *  ANORM   (input) DOUBLE PRECISION\n\
  *          If NORM = '1' or 'O', the 1-norm of the original matrix A.\n\
  *          If NORM = 'I', the infinity-norm of the original matrix A.\n\
  *\n\
  *  RCOND   (output) DOUBLE PRECISION\n\
  *          The reciprocal of the condition number of the matrix A,\n\
  *          computed as RCOND = 1/(norm(A) * norm(inv(A))).\n\
  *\n\
  *  WORK    (workspace) COMPLEX*16 array, dimension (2*N)\n\
  *\n\
  *  RWORK   (workspace) DOUBLE PRECISION array, dimension (2*N)\n\
  *\n\
  *  INFO    (output) INTEGER\n\
  *          = 0:  successful exit\n\
  *          < 0:  if INFO = -i, the i-th argument had an illegal value\n\
  *\n\n\
  *  =====================================================================\n\
  *\n"
