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#include "node.hh"
#include "math.h"
#include <stdlib.h>
ostream& Node::print (ostream& fout) const ///< print a node on a stream
{
switch (fType) {
case kIntNode : return fout << fData.i;
case kDoubleNode : return fout << fData.f;
case kSymNode : return fout << *(fData.s);
case kPointerNode : return fout << "ptr:" << fData.p;
default : return fout << "badnode";
}
// return fout;
}
//-----------------------------------------------------------------------------
// sameMagnitude(a,b) : true if the two nodes a and b represent numbers of same
// absolute value. Int promoted to double if needed.
//
bool sameMagnitude(const Node& a, const Node& b)
{
if (a.type() == kDoubleNode) {
if (b.type() == kDoubleNode) {
return fabs(a.getDouble()) == fabs(b.getDouble());
} else if (b.type() == kIntNode) {
return fabs(a.getDouble()) == fabs(double(b.getInt()));
} else {
return false;
}
} else if (a.type() == kIntNode) {
if (b.type() == kDoubleNode) {
return fabs(double(a.getInt())) == fabs(b.getDouble());
} else if (b.type() == kIntNode) {
return abs(a.getInt()) == abs(b.getInt());
} else {
return false;
}
} else {
return false;
}
}
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