#ifdef __plan9__#include <u.h>#include <libc.h>#include <stdio.h>typedef s64int int64_t;typedef u32int uint32_t;typedef s32int int32_t;typedef u16int uint16_t;typedef s16int int16_t;typedef u8int uint8_t;typedef s8int int8_t;typedef ulong size_t;typedef enum { false, true } bool;#define lockMixer()#define unlockMixer()#define openMixer(f,s) true#define closeMixer()static doubleround(double d){	double f = modf(d, &d);	if(f == 0.0 || d == 0.0)		return d;	return d > 0 ? d+1 : d-1;}#else#include <assert.h>#include <math.h>#include <stdbool.h>#include <stdint.h>#include <stdlib.h>#include <string.h>#include <stdio.h>#define USED(x) (void)x#endif