diff options
Diffstat (limited to 'ghc/lib/std/cbits/timezone.h')
| -rw-r--r-- | ghc/lib/std/cbits/timezone.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/ghc/lib/std/cbits/timezone.h b/ghc/lib/std/cbits/timezone.h new file mode 100644 index 0000000000..46b907f269 --- /dev/null +++ b/ghc/lib/std/cbits/timezone.h @@ -0,0 +1,47 @@ +#ifndef TIMEZONE_H +#define TIMEZONE_H + +#define _OSF_SOURCE + +#if TIME_WITH_SYS_TIME +# include <sys/time.h> +# include <time.h> +#else +# if HAVE_SYS_TIME_H +# include <sys/time.h> +# else +# include <time.h> +# endif +#endif + +#if HAVE_TM_ZONE +#define ZONE(x) (((struct tm *)x)->tm_zone) +#define SETZONE(x,z) (((struct tm *)x)->tm_zone = z) +#define GMTOFF(x) (((struct tm *)x)->tm_gmtoff) +#else /* ! HAVE_TM_ZONE */ +# if HAVE_TZNAME || cygwin32_TARGET_OS +#if cygwin32_TARGET_OS +extern char *tzname; +#else +extern char *tzname[2]; +#endif +# define ZONE(x) (((struct tm *)x)->tm_isdst ? tzname[1] : tzname[0]) +# define SETZONE(x,z) +# else /* ! HAVE_TZNAME */ +/* We're in trouble. If you should end up here, please report this as a bug. */ +# error Dont know how to get at timezone name on your OS. +# endif /* ! HAVE_TZNAME */ +/* Get the offset in secs from UTC, if (struct tm) doesn't supply it. */ + +extern TYPE_TIMEZONE timezone; + +# if HAVE_ALTZONE +extern time_t altzone; +# define GMTOFF(x) (((struct tm *)x)->tm_isdst ? altzone : timezone) +# else /* ! HAVE_ALTZONE */ +/* Assume that DST offset is 1 hour ... */ +# define GMTOFF(x) (((struct tm *)x)->tm_isdst ? (timezone - 3600) : timezone) +# endif /* ! HAVE_ALTZONE */ +#endif /* ! HAVE_TM_ZONE */ + +#endif /* TIMEZONE_H */ |