diff options
Diffstat (limited to 'rts/posix/GetTime.c')
| -rw-r--r-- | rts/posix/GetTime.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/rts/posix/GetTime.c b/rts/posix/GetTime.c index da8d0fa629..fabc40431d 100644 --- a/rts/posix/GetTime.c +++ b/rts/posix/GetTime.c @@ -34,7 +34,8 @@ // separately, using getrusage() and gettimeofday() respectively #ifdef darwin_HOST_OS -static double timer_scaling_factor_ns = 0.0; +static uint64_t timer_scaling_factor_numer = 0; +static uint64_t timer_scaling_factor_denom = 0; #endif void initializeTimer() @@ -42,7 +43,8 @@ void initializeTimer() #ifdef darwin_HOST_OS mach_timebase_info_data_t info; (void) mach_timebase_info(&info); - timer_scaling_factor_ns = (double)info.numer / (double)info.denom * 1e9; + timer_scaling_factor_numer = (uint64_t)info.numer; + timer_scaling_factor_denom = (uint64_t)info.denom; #endif } @@ -87,7 +89,7 @@ StgWord64 getMonotonicNSec(void) (StgWord64)ts.tv_nsec; #elif defined(darwin_HOST_OS) uint64_t time = mach_absolute_time(); - return (double)time * timer_scaling_factor_ns; + return (time * timer_scaling_factor_numer) / timer_scaling_factor_denom; #else struct timeval tv; |