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// Type definitions for bn.js 5.1
// Project: https://github.com/indutny/bn.js
// Definitions by: Leonid Logvinov <https://github.com/LogvinovLeon>
// Henry Nguyen <https://github.com/HenryNguyen5>
// Gaylor Bosson <https://github.com/Gilthoniel>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
/// <reference types="node"/>
declare namespace BN {
type Endianness = 'le' | 'be';
type IPrimeName = 'k256' | 'p224' | 'p192' | 'p25519';
interface MPrime {
name: string;
p: BN;
n: number;
k: BN;
}
interface ReductionContext {
m: number;
prime: MPrime;
[key: string]: any;
}
}
declare class BN {
static BN: typeof BN;
static wordSize: 26;
constructor(
number: number | string | number[] | Uint8Array | Buffer | BN,
base?: number | 'hex',
endian?: BN.Endianness
);
constructor(
number: number | string | number[] | Uint8Array | Buffer | BN,
endian?: BN.Endianness
)
/**
* @description create a reduction context
*/
static red(reductionContext: BN | BN.IPrimeName): BN.ReductionContext;
/**
* @description create a reduction context with the Montgomery trick.
*/
static mont(num: BN): BN.ReductionContext;
/**
* @description returns true if the supplied object is a BN.js instance
*/
static isBN(b: any): b is BN;
/**
* @description returns the maximum of 2 BN instances.
*/
static max(left: BN, right: BN): BN;
/**
* @description returns the minimum of 2 BN instances.
*/
static min(left: BN, right: BN): BN;
/**
* @description clone number
*/
clone(): BN;
/**
* @description convert to base-string and pad with zeroes
*/
toString(base?: number | 'hex', length?: number): string;
/**
* @description convert to Javascript Number (limited to 53 bits)
*/
toNumber(): number;
/**
* @description convert to JSON compatible hex string (alias of toString(16))
*/
toJSON(): string;
/**
* @description convert to byte Array, and optionally zero pad to length, throwing if already exceeding
*/
toArray(endian?: BN.Endianness, length?: number): number[];
/**
* @description convert to an instance of `type`, which must behave like an Array
*/
toArrayLike(
ArrayType: typeof Buffer,
endian?: BN.Endianness,
length?: number
): Buffer;
toArrayLike(
ArrayType: any[],
endian?: BN.Endianness,
length?: number
): any[];
/**
* @description convert to Node.js Buffer (if available). For compatibility with browserify and similar tools, use this instead: a.toArrayLike(Buffer, endian, length)
*/
toBuffer(endian?: BN.Endianness, length?: number): Buffer;
/**
* @description get number of bits occupied
*/
bitLength(): number;
/**
* @description return number of less-significant consequent zero bits (example: 1010000 has 4 zero bits)
*/
zeroBits(): number;
/**
* @description return number of bytes occupied
*/
byteLength(): number;
/**
* @description true if the number is negative
*/
isNeg(): boolean;
/**
* @description check if value is even
*/
isEven(): boolean;
/**
* @description check if value is odd
*/
isOdd(): boolean;
/**
* @description check if value is zero
*/
isZero(): boolean;
/**
* @description compare numbers and return `-1 (a < b)`, `0 (a == b)`, or `1 (a > b)` depending on the comparison result
*/
cmp(b: BN): -1 | 0 | 1;
/**
* @description compare numbers and return `-1 (a < b)`, `0 (a == b)`, or `1 (a > b)` depending on the comparison result
*/
ucmp(b: BN): -1 | 0 | 1;
/**
* @description compare numbers and return `-1 (a < b)`, `0 (a == b)`, or `1 (a > b)` depending on the comparison result
*/
cmpn(b: number): -1 | 0 | 1;
/**
* @description a less than b
*/
lt(b: BN): boolean;
/**
* @description a less than b
*/
ltn(b: number): boolean;
/**
* @description a less than or equals b
*/
lte(b: BN): boolean;
/**
* @description a less than or equals b
*/
lten(b: number): boolean;
/**
* @description a greater than b
*/
gt(b: BN): boolean;
/**
* @description a greater than b
*/
gtn(b: number): boolean;
/**
* @description a greater than or equals b
*/
gte(b: BN): boolean;
/**
* @description a greater than or equals b
*/
gten(b: number): boolean;
/**
* @description a equals b
*/
eq(b: BN): boolean;
/**
* @description a equals b
*/
eqn(b: number): boolean;
/**
* @description convert to two's complement representation, where width is bit width
*/
toTwos(width: number): BN;
/**
* @description convert from two's complement representation, where width is the bit width
*/
fromTwos(width: number): BN;
/**
* @description negate sign
*/
neg(): BN;
/**
* @description negate sign
*/
ineg(): BN;
/**
* @description absolute value
*/
abs(): BN;
/**
* @description absolute value
*/
iabs(): BN;
/**
* @description addition
*/
add(b: BN): BN;
/**
* @description addition
*/
iadd(b: BN): BN;
/**
* @description addition
*/
addn(b: number): BN;
/**
* @description addition
*/
iaddn(b: number): BN;
/**
* @description subtraction
*/
sub(b: BN): BN;
/**
* @description subtraction
*/
isub(b: BN): BN;
/**
* @description subtraction
*/
subn(b: number): BN;
/**
* @description subtraction
*/
isubn(b: number): BN;
/**
* @description multiply
*/
mul(b: BN): BN;
/**
* @description multiply
*/
imul(b: BN): BN;
/**
* @description multiply
*/
muln(b: number): BN;
/**
* @description multiply
*/
imuln(b: number): BN;
/**
* @description square
*/
sqr(): BN;
/**
* @description square
*/
isqr(): BN;
/**
* @description raise `a` to the power of `b`
*/
pow(b: BN): BN;
/**
* @description divide
*/
div(b: BN): BN;
/**
* @description divide
*/
divn(b: number): BN;
/**
* @description divide
*/
idivn(b: number): BN;
/**
* @description division with remainder
*/
divmod(b: BN, mode?: 'div' | 'mod', positive?: boolean): { div: BN; mod: BN };
/**
* @description reduct
*/
mod(b: BN): BN;
/**
* @description reduct
*/
umod(b: BN): BN;
/**
* @deprecated
* @description reduct
*/
modn(b: number): number;
/**
* @description reduct
*/
modrn(b: number): number;
/**
* @description rounded division
*/
divRound(b: BN): BN;
/**
* @description or
*/
or(b: BN): BN;
/**
* @description or
*/
ior(b: BN): BN;
/**
* @description or
*/
uor(b: BN): BN;
/**
* @description or
*/
iuor(b: BN): BN;
/**
* @description and
*/
and(b: BN): BN;
/**
* @description and
*/
iand(b: BN): BN;
/**
* @description and
*/
uand(b: BN): BN;
/**
* @description and
*/
iuand(b: BN): BN;
/**
* @description and (NOTE: `andln` is going to be replaced with `andn` in future)
*/
andln(b: number): BN;
/**
* @description xor
*/
xor(b: BN): BN;
/**
* @description xor
*/
ixor(b: BN): BN;
/**
* @description xor
*/
uxor(b: BN): BN;
/**
* @description xor
*/
iuxor(b: BN): BN;
/**
* @description set specified bit to 1
*/
setn(b: number): BN;
/**
* @description shift left
*/
shln(b: number): BN;
/**
* @description shift left
*/
ishln(b: number): BN;
/**
* @description shift left
*/
ushln(b: number): BN;
/**
* @description shift left
*/
iushln(b: number): BN;
/**
* @description shift right
*/
shrn(b: number): BN;
/**
* @description shift right (unimplemented https://github.com/indutny/bn.js/blob/master/lib/bn.js#L2086)
*/
ishrn(b: number): BN;
/**
* @description shift right
*/
ushrn(b: number): BN;
/**
* @description shift right
*/
iushrn(b: number): BN;
/**
* @description test if specified bit is set
*/
testn(b: number): boolean;
/**
* @description clear bits with indexes higher or equal to `b`
*/
maskn(b: number): BN;
/**
* @description clear bits with indexes higher or equal to `b`
*/
imaskn(b: number): BN;
/**
* @description add `1 << b` to the number
*/
bincn(b: number): BN;
/**
* @description not (for the width specified by `w`)
*/
notn(w: number): BN;
/**
* @description not (for the width specified by `w`)
*/
inotn(w: number): BN;
/**
* @description GCD
*/
gcd(b: BN): BN;
/**
* @description Extended GCD results `({ a: ..., b: ..., gcd: ... })`
*/
egcd(b: BN): { a: BN; b: BN; gcd: BN };
/**
* @description inverse `a` modulo `b`
*/
invm(b: BN): BN;
/**
* @description Convert number to red
*/
toRed(reductionContext: BN.ReductionContext): RedBN;
}
/**
* BN operations in a reduction context.
*/
declare class RedBN extends BN {
/**
* @description Convert back a number using a reduction context
*/
fromRed(): BN;
/**
* @description modular addition
*/
redAdd(b: RedBN): RedBN;
/**
* @description in-place modular addition
*/
redIAdd(b: RedBN): RedBN;
/**
* @description modular subtraction
*/
redSub(b: RedBN): RedBN;
/**
* @description in-place modular subtraction
*/
redISub(b: RedBN): RedBN;
/**
* @description modular shift left
*/
redShl(num: number): RedBN;
/**
* @description modular multiplication
*/
redMul(b: RedBN): RedBN;
/**
* @description in-place modular multiplication
*/
redIMul(b: RedBN): RedBN;
/**
* @description modular square
*/
redSqr(): RedBN;
/**
* @description in-place modular square
*/
redISqr(): RedBN;
/**
* @description modular square root
*/
redSqrt(): RedBN;
/**
* @description modular inverse of the number
*/
redInvm(): RedBN;
/**
* @description modular negation
*/
redNeg(): RedBN;
/**
* @description modular exponentiation
*/
redPow(b: BN): RedBN;
}
export = BN;
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