text: #ifndef ATL_dtGetNB_geqrf
  
  /*
   * NB selection for GEQRF: Side='RIGHT', Uplo='UPPER'
   * M : 25,149,211,273,335,397,521,645,769,1018,1515,1763,1887,1949,2012,4000
   * N : 25,149,211,273,335,397,521,645,769,1018,1515,1763,1887,1949,2012,4000
   * NB : 12,12,16,48,56,56,56,56,60,68,68,68,68,68,76,76
   */
  #define ATL_dtGetNB_geqrf(n_, nb_) \
  { \
     if ((n_) < 180) (nb_) = 12; \
     else if ((n_) < 242) (nb_) = 16; \
     else if ((n_) < 304) (nb_) = 48; \
     else if ((n_) < 707) (nb_) = 56; \
     else if ((n_) < 893) (nb_) = 60; \
     else if ((n_) < 1980) (nb_) = 68; \
     else (nb_) = 76; \
  }
  
  
  #endif    /* end ifndef ATL_dtGetNB_geqrf */
  