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start refactoring plus functions

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This commit is contained in:
Christian Zimmermann 2017-03-24 11:32:33 +01:00
parent b41f2e9f0f
commit 5318146710
1 changed files with 72 additions and 16 deletions
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82
src/multi_range.cc
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@ -74,24 +74,76 @@ namespace MultiArrayTools
};
// rewrite !!
template <class MultiIndex>
inline void plus(MultiIndex& index, size_t digit, int num)
template <size_t DIGIT>
struct SubIteration
{
IndefinitIndexBase& si = index.get(digit);
template <class MultiIndex>
static inline void plus(MultiIndex& index, int num)
{
IndefinitIndexBase& si = index.get(DIGIT);
si.setPosRel(num);
//si.setPos( si.pos() + num );
size_t oor = si.outOfRange();
if(digit){
if(oor > 0){
plus(index, digit - 1, 1);
plus(index, digit, -si.max());
SubIteration<DIGIT-1>::pp(index);
SubIteration<DIGIT>::plus(index, -si.max());
}
else if(oor < 0){
plus(index, digit - 1, -1);
plus(index, digit, si.max());
SubIteration<DIGIT-1>::mm(index);
SubIteration<DIGIT>::plus(index, si.max());
}
}
template <class MultiIndex>
static inline void pp(MultiIndex& index)
{
IndefinitIndexBase& si = index.get(DIGIT);
si.setPosRel(1);
size_t oor = si.outOfRange();
if(oor > 0){
SubIteration<DIGIT-1>::pp(index);
// set pos to zero ??
SubIteration<DIGIT>::plus(index, -si.max()); // This can be done faster because we know the pos
}
}
template <class MultiIndex>
static inline void mm(MultiIndex& index)
{
IndefinitIndexBase& si = index.get(DIGIT);
si.setPosRel(-1);
size_t oor = si.outOfRange();
if(oor < 0){
SubIteration<DIGIT-1>::mm(index);
// or to max here ??
SubIteration<DIGIT>::plus(index, si.max()); // This can be done faster because we know the pos
}
}
};
template <>
struct SubIteration<0>
{
template <class MultiIndex>
static inline void plus(MultiIndex& index, int num)
{
IndefinitIndexBase& si = index.get(0);
si.setPosRel(num);
}
template <class MultiIndex>
static inline void pp(MultiIndex& index)
{
IndefinitIndexBase& si = index.get(0);
si.setPosRel(1);
}
template <class MultiIndex>
static inline void mm(MultiIndex& index)
{
IndefinitIndexBase& si = index.get(0);
si.setPosRel(-1);
}
};
template <size_t N>
struct TupleNamer
@ -361,7 +413,8 @@ namespace MultiArrayTools
template <class... Indices>
MultiIndex<Indices...>& MultiIndex<Indices...>::operator++()
{
plus(*this, sizeof...(Indices)-1, 1);
SubIteration<sizeof...(Indices)-1>::pp(*this);
//plus(*this, sizeof...(Indices)-1, 1);
IIB::setPosRel(1);
return *this;
}
@ -369,7 +422,8 @@ namespace MultiArrayTools
template <class... Indices>
MultiIndex<Indices...>& MultiIndex<Indices...>::operator--()
{
plus(*this, sizeof...(Indices)-1, -1);
SubIteration<sizeof...(Indices)-1>::mm(*this);
//plus(*this, sizeof...(Indices)-1, -1);
IIB::setPosRel(-1);
return *this;
}
@ -377,7 +431,8 @@ namespace MultiArrayTools
template <class... Indices>
MultiIndex<Indices...>& MultiIndex<Indices...>::operator+=(int n)
{
plus(*this, sizeof...(Indices)-1, n);
SubIteration<sizeof...(Indices)-1>::plus(*this, n);
//plus(*this, sizeof...(Indices)-1, n);
IIB::setPosRel(n);
return *this;
}
@ -385,7 +440,8 @@ namespace MultiArrayTools
template <class... Indices>
MultiIndex<Indices...>& MultiIndex<Indices...>::operator-=(int n)
{
plus(*this, sizeof...(Indices)-1, -n);
SubIteration<sizeof...(Indices)-1>::plus(*this, -n);
//plus(*this, sizeof...(Indices)-1, -n);
IIB::setPosRel(-n);
return *this;
}