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| author | D G Turner | 2012-06-18 20:21:22 +0100 |
|---|---|---|
| committer | D G Turner | 2012-06-18 20:21:22 +0100 |
| commit | 954d56a30fcde8b72c30d8fdfa7ad68945d3ac96 (patch) | |
| tree | 60d1967633a4a4de46ef4e0a4e3f77872a73eb2f /backends | |
| parent | ad2b898eb39af8d7edb76788abc3366783d4c99a (diff) | |
| download | scummvm-rg350-954d56a30fcde8b72c30d8fdfa7ad68945d3ac96.tar.gz scummvm-rg350-954d56a30fcde8b72c30d8fdfa7ad68945d3ac96.tar.bz2 scummvm-rg350-954d56a30fcde8b72c30d8fdfa7ad68945d3ac96.zip | |
PS2: Implement algorithm for day of week for use in tm_wday.
Diffstat (limited to 'backends')
| -rw-r--r-- | backends/platform/ps2/ps2time.cpp | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/backends/platform/ps2/ps2time.cpp b/backends/platform/ps2/ps2time.cpp index decfc552ec..124c154d06 100644 --- a/backends/platform/ps2/ps2time.cpp +++ b/backends/platform/ps2/ps2time.cpp @@ -105,8 +105,14 @@ void OSystem_PS2::readRtcTime(void) { g_day, g_month, g_year + 2000); } -void OSystem_PS2::getTimeAndDate(TimeDate &t) const { +// Tomohiko Sakamoto's 1993 algorithm for any Gregorian date +static int dayOfWeek(int y, int m, int d) { + static const int t[] = {0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4}; + y -= m < 3; + return (y + y/4 - y/100 + y/400 + t[m-1] + d) % 7; +} +void OSystem_PS2::getTimeAndDate(TimeDate &t) const { uint32 currentSecs = g_timeSecs + (msecCount - g_lastTimeCheck) / 1000; if (currentSecs >= SECONDS_PER_DAY) { buildNewDate(+1); @@ -120,9 +126,5 @@ void OSystem_PS2::getTimeAndDate(TimeDate &t) const { t.tm_year = g_year + 100; t.tm_mday = g_day; t.tm_mon = g_month - 1; -#ifdef RELEASE_BUILD - #error getTimeAndDate() is not setting the day of the week -#else - t.tm_wday = 0; // FIXME -#endif + t.tm_wday = dayOfWeek(t.tm_year, t.tm_mon, t.tm_mday); } |