/** Difference between closest possible IEEE 754 doubles between 1 and 2. */
export declare const dblEpsilon: number;
export declare class BigFloat {
    /** Output EXACT value of an IEEE 754 double in base 2, 10 or 16.
      * Exponent must be between -2 and 61, and last 3 bits of mantissa must be 0.
      * Useful for debugging. */
    static doubleToString(dbl: number, base?: number): string;
    constructor(dbl?: number);
    /** Set value from a floating point number (probably IEEE 754 double). */
    setDouble(dbl: number): this;
    private trimMost();
    private trimLeast();
    /** Multiply by an integer and write output limbs to another list. */
    private mulInt(factor, dstLimbList, srcPos, dstPos, overwriteMask);
    private mulBig(multiplier);
    /** Multiply and return product in a new BigFloat. */
    mul(multiplier: number | BigFloat): BigFloat;
    absDeltaFrom(other: number | BigFloat): number;
    cmp: (other: number | BigFloat) => number;
    isZero(): boolean;
    /** Return an arbitrary number with sign matching the result of this - other. */
    deltaFrom(other: BigFloat): number;
    private addBig(addend);
    private subBig(subtrahend);
    private addSub(addend, flip);
    /** Add and return sum in a new BigFloat. */
    add(addend: number | BigFloat): BigFloat;
    /** Subtract and return difference in a new BigFloat. */
    sub(subtrahend: number | BigFloat): BigFloat;
    /** Round towards zero, to given number of base 2^32 fractional digits. */
    truncate(fractionLimbCount: number): this;
    round(decimalCount: number): this;
    /** Divide by integer, replacing current value by quotient. Return integer remainder. */
    private divInt(divisor);
    private fractionToString(base, groupSize, digitList);
    /** Convert to string in base 2, 10 or 16. */
    toString(base?: number): string;
    /** Remove leading and trailing insignificant zero digits. */
    static trim(str: string): string;
    private static padTbl;
    isNegative: number;
    fractionLen: number;
    private static tempFloat;
    /** List of digits in base 2^32, least significant first. */
    private limbList;
}