rhumbline.c File Reference

#include <math.h>
#include <grass/gis.h>
#include "pi.h"

Include dependency graph for rhumbline.c:

Go to the source code of this file.

Functions
int	G_begin_rhumbline_equation (double lon1, double lat1, double lon2, double lat2)
double	G_rhumbline_lat_from_lon (double lon)

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Function Documentation

int G_begin_rhumbline_equation	(	double	lon1,
		double	lat1,
		double	lon2,
		double	lat2
	)

Definition at line 28 of file rhumbline.c.

References PI, Radians, and tan().

double G_rhumbline_lat_from_lon

(

double

lon

)

Definition at line 62 of file rhumbline.c.

References atan(), Degrees, PI, and Radians.