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#include "valuerange.hh"
#ifdef FP_SUPPORT_OPTIMIZER
namespace FPoptimizer_CodeTree
{
template<typename Value_t>
void range<Value_t>::set_abs()
{
using namespace FUNCTIONPARSERTYPES;
bool has_negative = !min.known || min.val < Value_t();
bool has_positive = !max.known || max.val > Value_t();
bool crosses_axis = has_negative && has_positive;
rangehalf<Value_t> newmax; // ..+inf
if(min.known && max.known) // ..N
newmax.set( fp_max(fp_abs(min.val), fp_abs(max.val)) );
if(crosses_axis)
min.set( Value_t() ); // 0..
else
{
// Does not cross axis, so choose the smallest of known values
// (Either value is known; otherwise it would cross axis)
if(min.known && max.known) // N..
min.set( fp_min(fp_abs(min.val), fp_abs(max.val)) );
else if(min.known)
min.set( fp_abs(min.val) );
else //if(max.known)
min.set( fp_abs(max.val) );
}
max = newmax;
}
template<typename Value_t>
void range<Value_t>::set_neg()
{
std::swap(min, max);
min.val = -min.val;
max.val = -max.val;
}
template<typename Value_t>
bool IsLogicalTrueValue(const range<Value_t>& p, bool abs)
{
if(FUNCTIONPARSERTYPES::IsIntType<Value_t>::result)
{
if(p.min.known && p.min.val >= Value_t(1)) return true;
if(!abs && p.max.known && p.max.val <= Value_t(-1)) return true;
}
else
{
if(p.min.known && p.min.val >= Value_t(0.5)) return true;
if(!abs && p.max.known && p.max.val <= Value_t(-0.5)) return true;
}
return false;
}
template<typename Value_t>
bool IsLogicalFalseValue(const range<Value_t>& p, bool abs)
{
if(FUNCTIONPARSERTYPES::IsIntType<Value_t>::result)
{
if(abs)
return p.max.known && p.max.val < Value_t(1);
else
return p.min.known && p.max.known
&& p.min.val > Value_t(-1) && p.max.val < Value_t(1);
}
else
{
if(abs)
return p.max.known && p.max.val < Value_t(0.5);
else
return p.min.known && p.max.known
&& p.min.val > Value_t(-0.5) && p.max.val < Value_t(0.5);
}
}
}
/* BEGIN_EXPLICIT_INSTANTATION */
#include "instantiate.hh"
namespace FPoptimizer_CodeTree
{
#define FP_INSTANTIATE(type) \
template struct range<type>; \
template bool IsLogicalTrueValue(const range<type> &, bool); \
template bool IsLogicalFalseValue(const range<type> &, bool);
FPOPTIMIZER_EXPLICITLY_INSTANTIATE(FP_INSTANTIATE)
#undef FP_INSTANTIATE
}
/* END_EXPLICIT_INSTANTATION */
#endif
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