latlongCheck.ino

boolean withinPosition(float lat, float lon, float tolarance) {
    float gpsLat, gpsLong;
    // read gps...
    tolarance = tolarance / 1000.0; // 10 => 0.0010
    // Check position within tolarance
    boolean isLat = lat >= gpsLat - tolarance && lat <= gpsLat+tolarance;
    boolean isLon = lon >= gpsLon - tolarance && lon <= gpsLong+tolarance;
    return isLat && isLon;
}