diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | include/time.h | 7 | ||||
| -rw-r--r-- | time/difftime.c | 33 |
3 files changed, 38 insertions, 9 deletions
@@ -1,3 +1,10 @@ +2018-12-18 Albert ARIBAUD <albert.aribaud@3adev.fr> + + * include/time.h (__difftime64): Add. + * time/difftime.c (subtract): convert to 64-bit time. + * time/difftime.c (__difftime64): Add. + * time/difftime.c (__difftime): Wrap around __difftime64. + 2018-12-20 H.J. Lu <hongjiu.lu@intel.com> * manual/examples/add.c: Remove redundant "if not". diff --git a/include/time.h b/include/time.h index a10a59a..f935e9d 100644 --- a/include/time.h +++ b/include/time.h @@ -141,6 +141,13 @@ extern char * __strptime_internal (const char *rp, const char *fmt, struct tm *tm, void *statep, locale_t locparam) attribute_hidden; +#if __TIMESIZE == 64 +# define __difftime64 __difftime +#else +extern double __difftime64 (__time64_t time1, __time64_t time0); +libc_hidden_proto (__difftime64) +#endif + extern double __difftime (time_t time1, time_t time0); diff --git a/time/difftime.c b/time/difftime.c index 7c5dd98..70e08e4 100644 --- a/time/difftime.c +++ b/time/difftime.c @@ -31,9 +31,9 @@ time_t is known to be an integer type. */ static double -subtract (time_t time1, time_t time0) +subtract (__time64_t time1, __time64_t time0) { - if (! TYPE_SIGNED (time_t)) + if (! TYPE_SIGNED (__time64_t)) return time1 - time0; else { @@ -76,9 +76,9 @@ subtract (time_t time1, time_t time0) 1 is unsigned in C, so it need not be compared to zero. */ uintmax_t hdt = dt / 2; - time_t ht1 = time1 / 2; - time_t ht0 = time0 / 2; - time_t dht = ht1 - ht0; + __time64_t ht1 = time1 / 2; + __time64_t ht0 = time0 / 2; + __time64_t dht = ht1 - ht0; if (2 < dht - hdt + 1) { @@ -99,18 +99,18 @@ subtract (time_t time1, time_t time0) /* Return the difference between TIME1 and TIME0. */ double -__difftime (time_t time1, time_t time0) +__difftime64 (__time64_t time1, __time64_t time0) { /* Convert to double and then subtract if no double-rounding error could result. */ - if (TYPE_BITS (time_t) <= DBL_MANT_DIG - || (TYPE_FLOATING (time_t) && sizeof (time_t) < sizeof (long double))) + if (TYPE_BITS (__time64_t) <= DBL_MANT_DIG + || (TYPE_FLOATING (__time64_t) && sizeof (__time64_t) < sizeof (long double))) return (double) time1 - (double) time0; /* Likewise for long double. */ - if (TYPE_BITS (time_t) <= LDBL_MANT_DIG || TYPE_FLOATING (time_t)) + if (TYPE_BITS (__time64_t) <= LDBL_MANT_DIG || TYPE_FLOATING (__time64_t)) return (long double) time1 - (long double) time0; /* Subtract the smaller integer from the larger, convert the difference to @@ -118,4 +118,19 @@ __difftime (time_t time1, time_t time0) return time1 < time0 ? - subtract (time0, time1) : subtract (time1, time0); } + +/* Provide a 32-bit wrapper if needed. */ + +#if __TIMESIZE != 64 + +libc_hidden_def (__difftime64) + +double +__difftime (time_t time1, time_t time0) +{ + return __difftime64 (time1, time0); +} + +#endif + strong_alias (__difftime, difftime) |