math_funcs.h

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/* Copyright (C) 2002-2008
   Patrick Eriksson <Patrick.Eriksson@rss.chalmers.se>
   Stefan Buehler   <sbuehler@ltu.se>

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the
   Free Software Foundation; either version 2, or (at your option) any
   later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
   USA. */



/*****************************************************************************
 ***  File description 
 *****************************************************************************/

#ifndef math_funcs_h
#define math_funcs_h

#include "matpackI.h"



Numeric fac(const Index n);

Index integer_div( const Index& x, const Index& y );

Numeric last( ConstVectorView x );

Index last( const ArrayOfIndex& x );

void linspace(                      
              Vector&     x,           
              const Numeric  start,    
              const Numeric  stop,        
              const Numeric  step );

void nlinspace(         
              Vector&     x, 
              const Numeric     start,     
              const Numeric     stop,        
              const Index       n );

void nlogspace(         
               Vector&     x, 
               const Numeric     start,     
               const Numeric     stop,        
               const Index         n );

Numeric AngIntegrate_trapezoid(ConstMatrixView Integrand,
                               ConstVectorView za_grid,
                               ConstVectorView aa_grid);

Numeric AngIntegrate_trapezoid(ConstVectorView Integrand,
                               ConstVectorView za_grid);

Numeric AngIntegrate_trapezoid_opti(ConstMatrixView Integrand,
                                    ConstVectorView za_grid,
                                    ConstVectorView aa_grid,
                                    ConstVectorView grid_stepsize);

Numeric sign( const Numeric& x );

#endif  // math_funcs_h

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