diff options
Diffstat (limited to 'src/solar.h')
| -rw-r--r-- | src/solar.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/solar.h b/src/solar.h index bb2def5..7afc78f 100644 --- a/src/solar.h +++ b/src/solar.h @@ -93,3 +93,15 @@ */ double solar_elevation(double latitude, double longitude); + +/** + * Exit if time the is before year 0 in J2000. + * + * @return 0 on success, -1 on error. + */ +#if defined(TIMETRAVELLER) +int check_timetravel(void); +#else +# define check_timetravel(_) 0 +#endif + |