1/* Public domain. */ 2 3#ifndef _LINUX_MATH_H 4#define _LINUX_MATH_H 5 6#define mult_frac(x, n, d) (((x) * (n)) / (d)) 7 8#define round_up(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) 9#define round_down(x, y) (((x) / (y)) * (y)) /* y is power of two */ 10#define rounddown(x, y) (((x) / (y)) * (y)) /* arbitrary y */ 11#define DIV_ROUND_UP(x, y) (((x) + ((y) - 1)) / (y)) 12#define DIV_ROUND_UP_ULL(x, y) DIV_ROUND_UP(x, y) 13#define DIV_ROUND_DOWN(x, y) ((x) / (y)) 14#define DIV_ROUND_DOWN_ULL(x, y) DIV_ROUND_DOWN(x, y) 15#define DIV_ROUND_CLOSEST(x, y) (((x) + ((y) / 2)) / (y)) 16#define DIV_ROUND_CLOSEST_ULL(x, y) DIV_ROUND_CLOSEST(x, y) 17 18#endif 19