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

void datetime_invert_sign

(

DateTime *

dt

)

Parameters

dt

Returns

void

Definition at line 80 of file sign.c.

Referenced by datetime_change_timezone(), and datetime_difference().

int datetime_is_negative

(

const DateTime *

dt

)

Returns: 1 if the DateTime is negative 0 otherwise.

Parameters

dt

Returns

int

Definition at line 37 of file sign.c.

Referenced by datetime_format().

int datetime_is_positive

(

const DateTime *

dt

)

Returns: 1 if the Datetime is positive 0 otherwise.

Parameters

dt

Returns

int

Definition at line 21 of file sign.c.

Referenced by datetime_check_day().

void datetime_set_negative

(

DateTime *

dt

)

Makes the DateTime negative. (B.C. for ABSOLUTE DateTimes)

Parameters

dt

Returns

void

Definition at line 67 of file sign.c.

void datetime_set_positive

(

DateTime *

dt

)

Makes the DateTime positive. (A.D. for ABSOLUTE DateTimes)

Parameters

dt

Returns

void

Definition at line 52 of file sign.c.