diff options
Diffstat (limited to 'firmware/libc/mktime.c')
-rw-r--r-- | firmware/libc/mktime.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/firmware/libc/mktime.c b/firmware/libc/mktime.c new file mode 100644 index 0000000000..a52381ede5 --- /dev/null +++ b/firmware/libc/mktime.c @@ -0,0 +1,61 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2002 by Linus Nielsen Feltzing + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ + + +#include <time.h> +#include "config.h" + +#if CONFIG_RTC +/* mktime() code taken from lynx-2.8.5 source, written + by Philippe De Muyter <phdm@macqel.be> */ +time_t mktime(struct tm *t) +{ + short month, year; + time_t result; + static int m_to_d[12] = + {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334}; + + month = t->tm_mon; + year = t->tm_year + month / 12 + 1900; + month %= 12; + if (month < 0) + { + year -= 1; + month += 12; + } + result = (year - 1970) * 365 + (year - 1969) / 4 + m_to_d[month]; + result = (year - 1970) * 365 + m_to_d[month]; + if (month <= 1) + year -= 1; + result += (year - 1968) / 4; + result -= (year - 1900) / 100; + result += (year - 1600) / 400; + result += t->tm_mday; + result -= 1; + result *= 24; + result += t->tm_hour; + result *= 60; + result += t->tm_min; + result *= 60; + result += t->tm_sec; + return(result); +} +#endif |