Function addReplyDoubleDistance

src/geo.cpp:206–210

The default addReplyDouble has too much accuracy. We use this * for returning location distances. "5.2145 meters away" is nicer * than "5.2144992818115 meters away." We provide 4 digits after the dot * so that the returned value is decently accurate even when the unit is * the kilometer. */

 * so that the returned value is decently accurate even when the unit is
 * the kilometer. */
void addReplyDoubleDistance(client *c, double d) {
    char dbuf[128];
    int dlen = snprintf(dbuf, sizeof(dbuf), "%.4f", d);
    addReplyBulkCBuffer(c, dbuf, dlen);
}

/* Helper function for geoGetPointsInRange(): given a sorted set score
 * representing a point, and a GeoShape, appends this entry as a geoPoint