common.h

#ifndef _HAS_COMMON_H
#define _HAS_COMMON_H

#include <stdint.h>

struct ulong_ptr {
	unsigned long i;
	void *ptr;
};

struct double_ptr {
	double i;
	void *ptr;
};

struct ptr_num {
	void* ptr;
	size_t num;
};

enum msg {
	MSG_PAUSE	= 1,
	MSG_CONT	= 2,
	MSG_WALL	= 4,
	MSG_TERM	= 8,
	MSG_RM		= 16
};

#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))

#define die(FMT, ...)						\
	do {							\
		printf("yastg: panic in %s:%d: " FMT "\n", __FILE__, __LINE__, __VA_ARGS__);		\
		log_printfn(LOG_PANIC, "in %s:%d: " FMT "\n", __FILE__, __LINE__, __VA_ARGS__);	\
		exit(EXIT_FAILURE);				\
	} while(0)

#define bug(FMT, ...)						\
	do {							\
		printf("yastg: Oops! YASTG has encountered an internal bug in %s:%d and is crashing: " FMT "\n", __FILE__, __LINE__, __VA_ARGS__);		\
		log_printfn(LOG_PANIC, "Oops! YASTG has encountered an internal bug in %s:%d and is crashing: " FMT "\n", __FILE__, __LINE__, __VA_ARGS__);	\
		exit(EXIT_FAILURE);				\
	} while(0)

#define XYTORAD(x, y)			\
	(unsigned long)sqrt((double)x*x+y*y)

#define XYTOPHI(x, y)			\
	(atan2((double)y, (double)x))

#define POLTOX(phi, rad)		\
	(unsigned long)(rad*cos(phi))

#define POLTOY(phi, rad)		\
	(unsigned long)(rad*sin(phi))

#define MAX(x, y)			\
	((x > y) ? x : y)

#define MIN(x, y)			\
	((x < y) ? x : y)

void chomp(char *s);
int limit_long_to_int(const long l);
unsigned int limit_long_to_uint(const long l);
int str_to_long(const char * const str, long *out);

/* Greek alphabet */

#define GREEK_N 24
#define GREEK_LEN 7
extern const char* greek[GREEK_N];

/* Roman numerals */

#define ROMAN_N 24
#define ROMAN_LEN 5
extern const char* roman[ROMAN_N];

/* Astronomical constants */

#define GM_PER_AU 150			/* gigameters per astronomical unit */
#define AU_PER_LY 63241			/* Astronomical units per light year */
#define GM_PER_LY (GM_PER_AU * AU_PER_LY)
#define TICK_PER_LY 10000		/* Resolution of all coordinates (1/TICK_PER_LY lightyears) */
/* The "real" values here should be habitable zone from 0.95 to 1.37 AU and snow line (i.e. the upper limit
 * for rocky planetary formation) at 2.7 AU in a sol like system.
 * For simplicity, we assume habend == snowline and change the values somewhat. */
#define HAB_ZONE_START 0.95		/* Start of habitable zone in a sol like system, in AU */
#define HAB_ZONE_END 1.50		/* End of habitable zone in a sol like system, in AU */

#endif