--- 
:name: dlarrc
:md5sum: 2d81dc9eb77d1fa80fe1708beeb85b08
:category: :subroutine
:arguments: 
- jobt: 
    :type: char
    :intent: input
- n: 
    :type: integer
    :intent: input
- vl: 
    :type: doublereal
    :intent: input
- vu: 
    :type: doublereal
    :intent: input
- d: 
    :type: doublereal
    :intent: input
    :dims: 
    - n
- e: 
    :type: doublereal
    :intent: input
    :dims: 
    - n
- pivmin: 
    :type: doublereal
    :intent: input
- eigcnt: 
    :type: integer
    :intent: output
- lcnt: 
    :type: integer
    :intent: output
- rcnt: 
    :type: integer
    :intent: output
- info: 
    :type: integer
    :intent: output
:substitutions: {}

:fortran_help: "      SUBROUTINE DLARRC( JOBT, N, VL, VU, D, E, PIVMIN, EIGCNT, LCNT, RCNT, INFO )\n\n\
  *  Purpose\n\
  *  =======\n\
  *\n\
  *  Find the number of eigenvalues of the symmetric tridiagonal matrix T\n\
  *  that are in the interval (VL,VU] if JOBT = 'T', and of L D L^T\n\
  *  if JOBT = 'L'.\n\
  *\n\n\
  *  Arguments\n\
  *  =========\n\
  *\n\
  *  JOBT    (input) CHARACTER*1\n\
  *          = 'T':  Compute Sturm count for matrix T.\n\
  *          = 'L':  Compute Sturm count for matrix L D L^T.\n\
  *\n\
  *  N       (input) INTEGER\n\
  *          The order of the matrix. N > 0.\n\
  *\n\
  *  VL      (input) DOUBLE PRECISION\n\
  *  VU      (input) DOUBLE PRECISION\n\
  *          The lower and upper bounds for the eigenvalues.\n\
  *\n\
  *  D       (input) DOUBLE PRECISION array, dimension (N)\n\
  *          JOBT = 'T': The N diagonal elements of the tridiagonal matrix T.\n\
  *          JOBT = 'L': The N diagonal elements of the diagonal matrix D.\n\
  *\n\
  *  E       (input) DOUBLE PRECISION array, dimension (N)\n\
  *          JOBT = 'T': The N-1 offdiagonal elements of the matrix T.\n\
  *          JOBT = 'L': The N-1 offdiagonal elements of the matrix L.\n\
  *\n\
  *  PIVMIN  (input) DOUBLE PRECISION\n\
  *          The minimum pivot in the Sturm sequence for T.\n\
  *\n\
  *  EIGCNT  (output) INTEGER\n\
  *          The number of eigenvalues of the symmetric tridiagonal matrix T\n\
  *          that are in the interval (VL,VU]\n\
  *\n\
  *  LCNT    (output) INTEGER\n\
  *  RCNT    (output) INTEGER\n\
  *          The left and right negcounts of the interval.\n\
  *\n\
  *  INFO    (output) INTEGER\n\
  *\n\n\
  *  Further Details\n\
  *  ===============\n\
  *\n\
  *  Based on contributions by\n\
  *     Beresford Parlett, University of California, Berkeley, USA\n\
  *     Jim Demmel, University of California, Berkeley, USA\n\
  *     Inderjit Dhillon, University of Texas, Austin, USA\n\
  *     Osni Marques, LBNL/NERSC, USA\n\
  *     Christof Voemel, University of California, Berkeley, USA\n\
  *\n\
  *  =====================================================================\n\
  *\n"
