latitude_degrees_normalize()

double latitude_degrees_normalize

(

double

lat

)

Convert a latitude to the range of -90,90.

Parameters

lat	latitude in degrees

Definition at line 133 of file lwgeodetic.c.

Referenced by gbox_centroid(), and ptarray_force_geodetic().

{

        if ( lat > 360.0 )
                lat = remainder(lat, 360.0);

        if ( lat < -360.0 )
                lat = remainder(lat, -360.0);

        if ( lat > 180.0 )
                lat = 180.0 - lat;

        if ( lat < -180.0 )
                lat = -180.0 - lat;

        if ( lat > 90.0 )
                lat = 180.0 - lat;

        if ( lat < -90.0 )
                lat = -180.0 - lat;

        return lat;
}

Here is the caller graph for this function: