text: /*
   *   Copyright (c) 2009, Michael Lehn
   *
   *   All rights reserved.
   *
   *   Redistribution and use in source and binary forms, with or without
   *   modification, are permitted provided that the following conditions
   *   are met:
   *
   *   1) Redistributions of source code must retain the above copyright
   *      notice, this list of conditions and the following disclaimer.
   *   2) Redistributions in binary form must reproduce the above copyright
   *      notice, this list of conditions and the following disclaimer in
   *      the documentation and/or other materials provided with the
   *      distribution.
   *   3) Neither the name of the FLENS development group nor the names of
   *      its contributors may be used to endorse or promote products derived
   *      from this software without specific prior written permission.
   *
   *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef CXXBLAS_LEVEL1EXTENSIONS_IMAX1_TCC
  #define CXXBLAS_LEVEL1EXTENSIONS_IMAX1_TCC 1
  
  #include <complex>
  #include <cmath>
  #include <cxxblas/cxxblas.h>
  
  namespace cxxblas {
  
  template <typename IndexType, typename X>
  void
  imax1_generic(IndexType n, const std::complex<X> *x, IndexType incX,
                IndexType &iAbsMaxX)
  {
      CXXBLAS_DEBUG_OUT("imax1_generic");
  
      using std::abs;
  
      iAbsMaxX = 0;
      X absMaxX = abs(x[iAbsMaxX]);
      for (IndexType i=0, iX=0; i<n; ++i, iX+=incX) {
          if (abs(x[iX])>absMaxX) {
              iAbsMaxX = i;
              absMaxX = abs(x[iX]);
          }
      }
  }
  
  
  template <typename IndexType, typename X>
  void
  imax1(IndexType n, const X *x, IndexType incX, IndexType &iAbsMaxX)
  {
      if (incX<0) {
          x -= incX*(n-1);
      }
      if (n<=0) {
          iAbsMaxX = -1;
          return;
      }
      imax1_generic(n, x, incX, iAbsMaxX);
  }
  
  template <typename IndexType, typename X>
  IndexType
  imax1(IndexType n, const X *x, IndexType incX)
  {
      IndexType iAbsMaxX = IndexType(0);
  
      imax1(n, x, incX, iAbsMaxX);
      return iAbsMaxX;
  }
  
  
  } // namespace cxxblas
  
  #endif // CXXBLAS_LEVEL1EXTENSIONS_IMAX1_TCC
  
  