37 int floor(T x);
40 int round(T x);
49 const T & bound(const T & min, const T & x, const T & max);
52 T abs(const T & x);
58 inline int floor(const T x) {  in floor()  argument
59     return static_cast<int>(x);  in floor()
63 inline int round(const T x) {  in round()  argument
64     if ( x >= 0 ) {  in round()
65         return floor(x + T(0.5));  in round()
67         return floor(x - floor(x - T(1)) + T(0.5)) + floor(x - T(1));  in round()
82 inline const T & bound(const T & min, const T & x, const T & max) {  in bound()  argument
83     return x < min ? min : x > max ? max : x;  in bound()
87 inline T abs(const T & x) {  in abs()  argument
88     return x >= 0 ? x : -x;  in abs()