nerdcruft/libcruft-util
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Add subtration operation for points

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This commit is contained in:
Danny Robson 2011-09-13 16:49:10 +10:00
parent ee1439e5fc
commit dd1a935ed4
2 changed files with 6 additions and 0 deletions
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5
point.cpp
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@ -59,6 +59,11 @@ point::operator+= (const point &rhs) {
} }
point
point::operator- (const point &rhs) const
{ return point (x - rhs.x, y - rhs.y); }
std::ostream& std::ostream&
operator<< (std::ostream &os, const point &p) { operator<< (std::ostream &os, const point &p) {
os << "point(" << p.x << ", " << p.y << ", " << p.z << ")"; os << "point(" << p.x << ", " << p.y << ", " << p.z << ")";

1
point.hpp
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@ -33,6 +33,7 @@ namespace util {
double manhattan (const point &) const; double manhattan (const point &) const;
point& operator+= (const point&); point& operator+= (const point&);
point operator- (const point&) const;
}; };
} }