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.

{
 
        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;
}

Referenced by gbox_centroid(), and ptarray_force_geodetic().

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