text: /*
   * $Id: vecnorm1.cc 1414 2005-11-01 22:04:59Z cookedm $
   *
   * Copyright (C) 1997 Todd Veldhuizen <tveldhui@oonumerics.org>
   * All rights reserved.  Please see <blitz/blitz.h> for terms and
   * conditions of use.
   *
   */
  
  #ifndef BZ_VECNORM1_CC
  #define BZ_VECNORM1_CC
  
  #ifndef BZ_VECGLOBS_H
   #error <blitz/vecnorm1.cc> must be included via <blitz/vecglobs.h>
  #endif
  
  #include <blitz/applics.h>
  
  BZ_NAMESPACE(blitz)
  
  template<typename P_expr>
  inline
  BZ_SUMTYPE(_bz_typename P_expr::T_numtype)
  _bz_vec_norm1(P_expr vector)
  {
      typedef _bz_typename P_expr::T_numtype T_numtype;
      typedef BZ_SUMTYPE(T_numtype)          T_sumtype;
  
      T_sumtype sum = 0;
      int length = vector._bz_suggestLength();
  
      if (vector._bz_hasFastAccess())
      {
          for (int i=0; i < length; ++i)
              sum += _bz_abs<T_numtype>::apply(vector._bz_fastAccess(i));
      }
      else {
          for (int i=0; i < length; ++i)
              sum += _bz_abs<T_numtype>::apply(vector(i));
      }
  
      return sum;
  }
  
  // norm1(vector)
  template<typename P_numtype>
  BZ_SUMTYPE(P_numtype) norm1(const Vector<P_numtype>& x)
  {
      return _bz_vec_norm1(x._bz_asVecExpr());
  }
  
  // norm1(expr)
  template<typename P_expr>
  BZ_SUMTYPE(_bz_typename P_expr::T_numtype) norm1(_bz_VecExpr<P_expr> expr)
  {
      return _bz_vec_norm1(expr);
  }
  
  // norm1(vecpick)
  template<typename P_numtype>
  BZ_SUMTYPE(P_numtype) norm1(const VectorPick<P_numtype>& x)
  {
      return _bz_vec_norm1(x._bz_asVecExpr());
  }
  
  // norm1(TinyVector)
  template<typename P_numtype, int N_dimensions>
  BZ_SUMTYPE(P_numtype) norm1(const TinyVector<P_numtype, N_dimensions>& x)
  {
      return _bz_vec_norm1(x._bz_asVecExpr());
  }
  
  
  BZ_NAMESPACE_END
  
  #endif // BZ_VECNORM1_CC
  
  