/**
 * Format a floating point for display using the specified
 * number of significant figures and least significant decimal.
 * Scientific notation may used by this method if this
 * object is very small, very large, has many significant
 * figures, or the number of significant figures would be
 * ambiguous in the output if scientific notation were not
 * used.
 *
 * @param f A floating point number that should be displayed
 * @param sigFigs desired number of significant figures (integer).
 * @param sigDecs the least significant decimal place (integer).
 * @param scientific true iff scientific notation should always be used.
 * @return a string of this object formatted correctly.
 */
export declare function displaySigFigs(f: number, sigFigs: number, sigDecs: number, scientific: boolean): string;