sign.c File Reference
#include <grass/datetime.h>
Include dependency graph for sign.c:
Go to the source code of this file.
Functions | |
| int | datetime_is_positive (const DateTime *dt) |
| Returns: 1 if the Datetime is positive 0 otherwise. More... | |
| int | datetime_is_negative (const DateTime *dt) |
| Returns: 1 if the DateTime is negative 0 otherwise. More... | |
| void | datetime_set_positive (DateTime *dt) |
| Makes the DateTime positive. (A.D. for ABSOLUTE DateTimes) More... | |
| void | datetime_set_negative (DateTime *dt) |
| Makes the DateTime negative. (B.C. for ABSOLUTE DateTimes) More... | |
| void | datetime_invert_sign (DateTime *dt) |
Function Documentation
◆ datetime_invert_sign()
| void datetime_invert_sign | ( | DateTime * | dt | ) |
- Parameters
-
dt
- Returns
- void
Definition at line 76 of file sign.c.
References DateTime::positive.
Referenced by datetime_change_timezone().
◆ datetime_is_negative()
| int datetime_is_negative | ( | const DateTime * | dt | ) |
Returns: 1 if the DateTime is negative 0 otherwise.
- Parameters
-
dt
- Returns
- int
Definition at line 36 of file sign.c.
References DateTime::positive.
◆ datetime_is_positive()
| int datetime_is_positive | ( | const DateTime * | dt | ) |
Returns: 1 if the Datetime is positive 0 otherwise.
- Parameters
-
dt
- Returns
- int
Definition at line 20 of file sign.c.
References DateTime::positive.
◆ datetime_set_negative()
| void datetime_set_negative | ( | DateTime * | dt | ) |
Makes the DateTime negative. (B.C. for ABSOLUTE DateTimes)
- Parameters
-
dt
- Returns
- void
Definition at line 64 of file sign.c.
References DateTime::positive.
◆ datetime_set_positive()
| void datetime_set_positive | ( | DateTime * | dt | ) |
Makes the DateTime positive. (A.D. for ABSOLUTE DateTimes)
- Parameters
-
dt
- Returns
- void
Definition at line 50 of file sign.c.
References DateTime::positive.
