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#include "xtended.hh"
#include "Text.hh"
#include <math.h>
#include "floats.hh"
class PowPrim : public xtended
{
public:
PowPrim() : xtended("pow") {}
virtual unsigned int arity () { return 2; }
virtual bool needCache () { return true; }
virtual Type infereSigType (const vector<Type>& args)
{
assert (args.size() == arity());
//return castInterval(floatCast(args[0]|args[1]), interval()); // temporary !!!
//return castInterval(args[0]|args[1], interval()); // temporary !!!
interval i = args[0]->getInterval();
interval j = args[1]->getInterval();
return castInterval(args[0]|args[1], pow(i,j));
}
virtual void sigVisit (Tree sig, sigvisitor* visitor) {}
virtual int infereSigOrder (const vector<int>& args) {
assert (args.size() == arity());
return max(args[0], args[1]);
}
virtual Tree computeSigOutput (const vector<Tree>& args) {
num n,m;
assert (args.size() == arity());
if (isNum(args[0],n) & isNum(args[1],m)) {
return tree(pow(double(n), double(m)));
} else {
return tree(symbol(), args[0], args[1]);
}
}
virtual string generateCode (Klass* klass, const vector<string>& args, const vector<Type>& types)
{
assert (args.size() == arity());
assert (types.size() == arity());
if ((types[1]->nature() == kInt) && (types[1]->variability() == kKonst) && (types[1]->computability() == kComp)) {
klass->rememberNeedPowerDef();
return subst("faustpower<$1>($0)", args[0], args[1]);
} else {
return subst("pow$2($0,$1)", args[0], args[1], isuffix());
}
}
virtual string generateLateq (Lateq* lateq, const vector<string>& args, const vector<Type>& types)
{
assert (args.size() == arity());
assert (types.size() == arity());
return subst("{$0}^{$1}", args[0], args[1]);
}
// power is now used as an infix binary operator, we return true to
// indicate that we want ^(n) to be equivalent to _^n
virtual bool isSpecialInfix() { return true; }
};
xtended* gPowPrim = new PowPrim();
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