text: #include "__cf_C_fault_detection_under_varing_load.h"
  #include "rt_look.h"
  int_T rt_GetLookupIndex ( const real_T * x , int_T xlen , real_T u ) { int_T
  idx = 0 ; int_T bottom = 0 ; int_T top = xlen - 1 ; int_T retValue = 0 ;
  boolean_T returnStatus = 0U ;
  #ifdef DOINTERPSEARCH
  real_T offset = 0 ;
  #endif
  if ( u <= x [ bottom ] ) { retValue = bottom ; returnStatus = 1U ; } else if
  ( u >= x [ top ] ) { retValue = top - 1 ; returnStatus = 1U ; } else { } if (
  returnStatus == 0U ) { if ( u < 0 ) { for ( ; ; ) {
  #ifdef DOINTERPSEARCH
  offset = ( u - x [ bottom ] ) / ( x [ top ] - x [ bottom ] ) ; idx = bottom +
  ( int_T ) ( ( top - bottom ) * ( offset - DBL_EPSILON ) ) ;
  #else
  idx = ( bottom + top ) / 2 ;
  #endif
  if ( u < x [ idx ] ) { top = idx - 1 ; } else if ( u >= x [ idx + 1 ] ) {
  bottom = idx + 1 ; } else { retValue = idx ; break ; } } } else { for ( ; ; )
  {
  #ifdef DOINTERPSEARCH
  offset = ( u - x [ bottom ] ) / ( x [ top ] - x [ bottom ] ) ; idx = bottom +
  ( int_T ) ( ( top - bottom ) * ( offset - DBL_EPSILON ) ) ;
  #else
  idx = ( bottom + top ) / 2 ;
  #endif
  if ( u <= x [ idx ] ) { top = idx - 1 ; } else if ( u > x [ idx + 1 ] ) {
  bottom = idx + 1 ; } else { retValue = idx ; break ; } } } } return retValue
  ; }
  