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| author | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2014-02-02 08:56:20 +0200 |
|---|---|---|
| committer | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2014-02-02 08:58:16 +0200 |
| commit | 6964422cf426164b39abdc66f260be4f582309e0 (patch) | |
| tree | ae077b27e7646de20d74e3915c706b91cf056ed6 /unix/time.c | |
| parent | 87e85b7dc7753bde510ec37db321574a1cc0cc47 (diff) | |
| download | micropython-6964422cf426164b39abdc66f260be4f582309e0.tar.gz micropython-6964422cf426164b39abdc66f260be4f582309e0.zip | |
unix time.clock(): Actually return float value.
Diffstat (limited to 'unix/time.c')
| -rw-r--r-- | unix/time.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/unix/time.c b/unix/time.c index acea69178a..9d8cf497c4 100644 --- a/unix/time.c +++ b/unix/time.c @@ -14,7 +14,12 @@ static MP_DEFINE_CONST_FUN_OBJ_0(mod_time_time_obj, mod_time_time); // Note: this is deprecated since CPy3.3, but pystone still uses it. static mp_obj_t mod_time_clock() { - return mp_obj_new_int((machine_int_t)clock()); +// return mp_obj_new_int((machine_int_t)clock()); + // POSIX requires CLOCKS_PER_SEC equals 1000000, so that's what we assume + // float cannot represent full range of int32 precisely, so we pre-divide + // int to reduce resolution, and then actually do float division hoping + // to preserve integer part resolution. + return mp_obj_new_float((float)(clock() / 1000) / 1000.0); } static MP_DEFINE_CONST_FUN_OBJ_0(mod_time_clock_obj, mod_time_clock); |