GRASS Programmer's Manual
6.4.2(2012)
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#include <grass/datetime.h>
Go to the source code of this file.
Functions | |
int | datetime_get_increment_type (const DateTime *dt, int *mode, int *from, int *to, int *fracsec) |
This returns the components of a type (mode/from/to/fracsec) that can be used to construct a DateTime object that can be used to increment the 'src'. Also see datetime_set_increment_type(). returns: 0 dt is legal !=0 why dt is illegal Implemented as follows: | |
int | datetime_set_increment_type (const DateTime *src, DateTime *incr) |
src must be legal This is a convenience routine which is implemented as follows: |
int datetime_get_increment_type | ( | const DateTime * | dt, |
int * | mode, | ||
int * | from, | ||
int * | to, | ||
int * | fracsec | ||
) |
This returns the components of a type (mode/from/to/fracsec) that can be used to construct a DateTime object that can be used to increment the 'src'. Also see datetime_set_increment_type(). returns: 0 dt is legal !=0 why dt is illegal Implemented as follows:
*mode = RELATIVE *to = src.to *fracsec = src.fracsec if src.mode is ABSOLUTE if src.to is in {YEAR,MONTH} then *from = YEAR if src.to is in {DAY,HOUR,MINUTE,SECOND} then *from = DAY if src.mode is RELATIVE, then *from = src.from
mode | |
from | |
to | |
fracsec |
Definition at line 41 of file incr3.c.
References datetime_error_code(), datetime_in_interval_year_month(), datetime_is_absolute(), and datetime_is_valid_type().
Referenced by datetime_set_increment_type().
int datetime_set_increment_type | ( | const DateTime * | src, |
DateTime * | incr | ||
) |
src must be legal This is a convenience routine which is implemented as follows:
int mode, from ,to; int fracsec; if(<b>datetime_get_increment_type</b>(src, &mode, &from, &to, &fracsec)) return <b>datetime_get_error_code()</b>; return <b>datetime_set_type</b> (incr, mode, from, to, fracsec);
Timezone Timezones are represented in minutes from GMT in the range [-720,+780]. For a DateTime to have a timezone, it must be of type ABSOLUTE, and "to" must be in {MINUTE,SECOND}.
src | |
incr |
Definition at line 85 of file incr3.c.
References datetime_error_code(), datetime_get_increment_type(), and datetime_set_type().
Referenced by datetime_difference().