#ifndef __2GEOM_ORD__ #define __2GEOM_ORD__ namespace { enum Cmp { LESS_THAN=-1, GREATER_THAN=1, EQUAL_TO=0 }; inline Cmp operator-(Cmp x) { switch(x) { case LESS_THAN: return GREATER_THAN; case GREATER_THAN: return LESS_THAN; case EQUAL_TO: return EQUAL_TO; } } template <typename T1, typename T2> inline Cmp cmp(T1 const &a, T2 const &b) { if ( a < b ) { return LESS_THAN; } else if ( b < a ) { return GREATER_THAN; } else { return EQUAL_TO; } } } #endif