//# TVecMath.cc: Global helper functions for table vector mathematics
//# Copyright (C) 1994,1995,1997
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//#        Internet email: casa-feedback@nrao.edu.
//#        Postal address: AIPS++ Project Office
//#                        National Radio Astronomy Observatory
//#                        520 Edgemont Road
//#                        Charlottesville, VA 22903-2475 USA

#ifndef TABLES_TVECMATH_TCC
#define TABLES_TVECMATH_TCC

#include <casacore/tables/Tables/TVecMath.h>
#include <casacore/tables/Tables/TVec.h>
#include <casacore/tables/Tables/TVecTemp.h>
#include <casacore/tables/Tables/TableError.h>
#include <casacore/casa/Arrays/ArrayError.h>
#include <casacore/casa/BasicMath/Math.h>

namespace casacore { //# NAMESPACE CASACORE - BEGIN

//# Add, subtract, multiply, divide table vector.
//# Define it for a vector and scalar, 2 vectors, 2 vectors with assign.
#define TVECMATHOPER(NAME,OP,OPA) \
template<class T> \
TabVecRep<T>& aips_name2(tabVecRepvalr,NAME) (const TabVecRep<T>& tv, \
                                              const T& val) \
{ \
    rownr_t nr = tv.nelements(); \
    TabVecTemp<T>& vec = *(TabVecTemp<T>*)tv.newVec(); \
    for (rownr_t i=0; i<nr; i++) { \
	tv.getVal (i, vec(i)); \
	vec(i) OPA val; \
    } \
    return vec; \
} \
template<class T> \
TabVecRep<T>& aips_name2(tabVecRepvall,NAME) (const T& val, \
                                              const TabVecRep<T>& tv) \
{ \
    rownr_t nr = tv.nelements(); \
    TabVecTemp<T>& vec = *(TabVecTemp<T>*)tv.newVec(); \
    T tmp; \
    for (rownr_t i=0; i<nr; i++) { \
	tv.getVal (i, tmp); \
	vec(i) = val OP tmp; \
    } \
    return vec; \
} \
template<class T> \
TabVecRep<T>& aips_name2(tabVecReptv,NAME) (const TabVecRep<T>& tvl, \
                                            const TabVecRep<T>& tvr) \
{ \
    rownr_t nr = tvr.nelements(); \
    tvl.validateConformance(nr); \
    TabVecTemp<T>& vec = *(TabVecTemp<T>*)tvl.newVec(); \
    for (rownr_t i=0; i<nr; i++) { \
	tvl.getVal (i, vec(i)); \
	vec(i) OPA tvr.value(i); \
    } \
    return vec; \
} \
template<class T> \
void aips_name2(tabVecRepvalass,NAME) (TabVecRep<T>& tv, const T& val) \
{ \
    rownr_t nr = tv.nelements(); \
    T tmp; \
    for (rownr_t i=0; i<nr; i++) { \
	tv.getVal (i, tmp); \
	tmp OPA val; \
	tv.putVal (i, tmp); \
    } \
} \
template<class T> \
void aips_name2(tabVecReptvass,NAME) (TabVecRep<T>& tvl, \
                                      const TabVecRep<T>& tvr) \
{ \
    rownr_t nr = tvr.nelements(); \
    tvl.validateConformance(nr); \
    T tmp; \
    for (rownr_t i=0; i<nr; i++) { \
	tvl.getVal (i, tmp); \
	tmp OPA tvr.value(i); \
	tvl.putVal (i, tmp); \
    } \
}

TVECMATHOPER(add,+,+=)
TVECMATHOPER(sub,-,-=)
TVECMATHOPER(tim,*,*=)
TVECMATHOPER(div,/,/=)



template<class T>
TabVecRep<T>& tabVecRepnegate(const TabVecRep<T>& tv)
{
    rownr_t nr = tv.nelements();
    TabVecTemp<T>& vec = *(TabVecTemp<T>*)tv.newVec();
    T tmp;
    for (rownr_t i=0; i<nr; i++) {
	tv.getVal (i, tmp);
	vec(i) = -tmp;
    }
    return vec;
}


template<class T>
void tabVecRepminmax (T& min, T& max, const TabVecRep<T>& tv)
{
    rownr_t nr = tv.nelements();
    if (nr == 0) {
	throw(ArrayError("void minMax(T& min, T& max, const TabVecRep<T>&) - "
			 "TabVecRep has no elements"));
    }
    T tmp;
    tv.getVal (0, min);
    max = min;
    for (rownr_t i=1; i<nr; i++) {
        tv.getVal (i, tmp);
	if (tmp < min)
	    min = tmp;
	if (tmp > max)
	    max = tmp;
    }
}


template<class T>
void tabVecRepindgen(TabVecRep<T>& tv, T start, T inc)
{
    rownr_t nr = tv.nelements();
    for (rownr_t i=0; i<nr; i++) {
	tv.putVal (i, start + i*inc);
    }
}


#define TABVECFUNC(NAME) \
template<class T> \
TabVecRep<T>& aips_name2(tabVecRep,NAME) (const TabVecRep<T>& tv) \
{ \
    rownr_t nr = tv.nelements(); \
    TabVecTemp<T>& vec = *(TabVecTemp<T>*)tv.newVec(); \
    T tmp; \
    for (rownr_t i=0; i<nr; i++) { \
	tv.getVal (i, tmp); \
	vec(i) = NAME(tmp); \
    } \
    return vec; \
}

#define TABVECFUNC2(NAME) \
template<class T> \
TabVecRep<T>& aips_name2(tabVecRep,NAME) (const TabVecRep<T>& tvl, \
                                          const TabVecRep<T>& tvr) \
{ \
    rownr_t nr = tvr.nelements(); \
    tvl.validateConformance(nr); \
    TabVecTemp<T>& vec = *(TabVecTemp<T>*)tvl.newVec(); \
    T tmpl, tmpr; \
    for (rownr_t i=0; i<nr; i++) { \
	tvl.getVal (i, tmpl); \
	tvr.getVal (i, tmpr); \
	vec(i) = NAME(tmpl, tmpr); \
    } \
    return vec; \
}

TABVECFUNC (cos)
TABVECFUNC (cosh)
TABVECFUNC (exp)
TABVECFUNC (log)
TABVECFUNC (log10)
TABVECFUNC2(pow)
TABVECFUNC (sin)
TABVECFUNC (sinh)
TABVECFUNC (sqrt)
TABVECFUNC (acos)
TABVECFUNC (asin)
TABVECFUNC (atan)
TABVECFUNC2(atan2)
TABVECFUNC (ceil)
TABVECFUNC (fabs)
TABVECFUNC (floor)
TABVECFUNC2(fmod)
TABVECFUNC (tan)
TABVECFUNC (tanh)


template<class T>
TabVecRep<T>& tabVecReppowd (const TabVecRep<T>& tv, const double& exp)
{
    rownr_t nr = tv.nelements();
    TabVecTemp<T>& vec = *(TabVecTemp<T>*)tv.newVec();
    T tmp;
    for (rownr_t i=0; i<nr; i++) {
	tv.getVal (i, tmp);
	vec(i) = pow(tmp, exp);
    }
    return vec;
}


template<class T>
T tabVecRepsum (const TabVecRep<T>& tv)
{
    rownr_t nr = tv.nelements();
    if (nr == 0) {
	throw(ArrayError("T sum(const TabVecRep<T>&) - "
			 "TabVecRep has no elements"));
    }
    T tmp, res;
    tv.getVal (0, res);
    for (rownr_t i=1; i<nr; i++) {
	tv.getVal (i, tmp);
	res += tmp;
    }
    return res;
}

template<class T>
T tabVecRepproduct (const TabVecRep<T>& tv)
{
    rownr_t nr = tv.nelements();
    if (nr == 0) {
	throw(ArrayError("T product(const TabVecRep<T>&) - "
			 "TabVecRep has no elements"));
    }
    T tmp, res;
    tv.getVal (0, res);
    for (rownr_t i=1; i<nr; i++) {
	tv.getVal (i, tmp);
	res *= tmp;
    }
    return res;
}


template<class T>
T tabVecRepinnerproduct (const TabVecRep<T>& tvl, const TabVecRep<T>& tvr)
{
    rownr_t nr = tvr.nelements();
    tvl.validateConformance(nr);
    T res = 0;
    for (rownr_t i=0; i<nr; i++) {
	res += tvl.value(i) * tvr.value(i);
    }
    return res;
}

template<class T>
T tabVecRepnorm (const TabVecRep<T>& tv)
{
    rownr_t nr = tv.nelements();
    T tmp;
    T res = 0;
    for (rownr_t i=0; i<nr; i++) {
	tv.getVal (i, tmp);
	res += tmp*tmp;
    }
    return sqrt(res);
}

//# the 3-space cross/vector product
template <class T>
TabVecRep<T>& tabVecRepcrossproduct (const TabVecRep<T>& tvl,
				     const TabVecRep<T>& tvr)
{
    tvl.validateConformance(3);
    tvr.validateConformance(3);
    TabVecTemp<T>& vec = *(TabVecTemp<T>*)tvl.newVec();
    vec(0) = tvl.value(1) * tvr.value(2)  -  tvl.value(2) * tvr.value(1);
    vec(1) = tvl.value(2) * tvr.value(0)  -  tvl.value(0) * tvr.value(2);
    vec(2) = tvl.value(0) * tvr.value(1)  -  tvl.value(1) * tvr.value(0);
    return vec;
}

} //# NAMESPACE CASACORE - END


#endif
