Hi Xypron,
I propose to add to MathProg the following built-in time functions:
localtime()
Returns the current local calendar time (volatile).
str2time(s, fmt)
Converts the specified character string s to the calendar time using
the format control string fmt.
time2str(t, fmt)
Converts the calendar time t to a character string using the format
control string fmt.
maketime(int year, int month, int day, int hh, int mm, int ss);
Converts the broken-down time to the simple calendar time.
Year(t)
Returns the year number, for example, 2008.
Month(t)
Returns the month number, from 1 to 12.
Day(t)
Returns the day of the month, from 1 to 31.
Hour(t)
Returns the hour, from 0 to 23.
Minute(t)
Returns the minute, from 0 to 59.
Second(t)
Returns the second, from 0 to 59.
NOTE: The calendar time is the number of seconds elapsed since
1970-01-01 00:00:00. It may be positive as well as negative.
Andrew Makhorin
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