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#include "xtended.hh"
#include "Text.hh"
#include <math.h>
#include "floats.hh"
class Atan2Prim : public xtended
{
public:
Atan2Prim() : xtended("atan2") {}
virtual unsigned int arity () { return 2; }
virtual bool needCache () { return true; }
virtual Type infereSigType (const vector<Type>& args)
{
assert (args.size() == 2);
return floatCast(args[0]|args[1]);
}
virtual void sigVisit (Tree sig, sigvisitor* visitor) {}
virtual int infereSigOrder (const vector<int>& args) {
return max(args[0], args[1]);
}
virtual Tree computeSigOutput (const vector<Tree>& args)
{
assert (args.size() == 2);
num n,m;
if (isNum(args[0],n) && isNum(args[1],m)) {
return tree(atan2(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());
return subst("atan2$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("\\arctan\\frac{$0}{$1}", args[0], args[1]);
}
};
xtended* gAtan2Prim = new Atan2Prim();
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