BigInteger class
A wrapper class for arbitrary precision integers.
This class wraps Dart's BigInt and provides Java-like functionality similar to Java's BigInteger class.
Example usage:
BigInteger a = BigInteger("123456789012345678901234567890");
BigInteger b = BigInteger.fromInt(42);
BigInteger sum = a + b;
print(sum.toString()); // Very large number
print(a.isProbablePrime()); // Primality test
- Implemented types
Constructors
- BigInteger(String value, [int radix = 10])
-
Creates a BigInteger from a string representation.
factory
- BigInteger.fromBigInt(BigInt value)
-
Creates a BigInteger from a BigInt value.
factory
- BigInteger.fromInt(int value)
-
Creates a BigInteger from an int value.
factory
Properties
- bitLength → int
-
Returns the number of bits in this BigInteger.
no setter
- hashCode → int
-
Returns the hash code for this BigInteger.
no setteroverride
- isEven → bool
-
Returns true if this BigInteger is even.
no setter
- isNegative → bool
-
Returns true if this BigInteger is negative.
no setter
- isOdd → bool
-
Returns true if this BigInteger is odd.
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- value → BigInt
-
Returns the wrapped BigInt value.
no setter
Methods
-
abs(
) → BigInteger - Returns the absolute value of this BigInteger.
-
compareTo(
BigInteger other) → int -
Compares this BigInteger with another.
override
-
gcd(
BigInteger other) → BigInteger - Returns the greatest common divisor of this and other.
-
isProbablePrime(
[int certainty = 10]) → bool - Returns true if this BigInteger is probably prime.
-
modInverse(
BigInteger modulus) → BigInteger - Returns the modular multiplicative inverse of this BigInteger.
-
modPow(
BigInteger exponent, BigInteger modulus) → BigInteger - Returns the modular exponentiation of this BigInteger.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
pow(
int exponent) → BigInteger - Returns this BigInteger raised to the power of the exponent.
-
toDouble(
) → double - Converts to double (may lose precision).
-
toInt(
) → int - Converts to int (may throw if too large).
-
toRadixString(
[int? radix]) → String - Returns a string representation in the specified radix.
-
toString(
) → String -
Returns a string representation of this BigInteger.
override
-
toUnsigned(
int bitLength) → BigInteger -
Returns the value of this BigInteger masked to an unsigned representation
with the given
bitLength.
Operators
-
operator %(
BigInteger other) → BigInteger -
operator &(
BigInteger other) → BigInteger - Bitwise operators
-
operator *(
BigInteger other) → BigInteger -
operator +(
BigInteger other) → BigInteger - Arithmetic operators
-
operator -(
BigInteger other) → BigInteger -
operator <(
BigInteger other) → bool - Comparison operators
-
operator <<(
int shiftAmount) → BigInteger -
operator <=(
BigInteger other) → bool -
operator ==(
Object other) → bool -
Returns true if this BigInteger equals the specified object.
override
-
operator >(
BigInteger other) → bool -
operator >=(
BigInteger other) → bool -
operator >>(
int shiftAmount) → BigInteger -
operator ^(
BigInteger other) → BigInteger -
operator unary-(
) → BigInteger - Returns the negation of this BigInteger.
-
operator |(
BigInteger other) → BigInteger -
operator ~(
) → BigInteger -
operator ~/(
BigInteger other) → BigInteger
Static Properties
- ONE → BigInteger
-
This creates a BigInteger with value 1.
final
- TEN → BigInteger
-
This creates a BigInteger with value 10.
final
- TWO → BigInteger
-
This creates a BigInteger with value 2.
final
- ZERO → BigInteger
-
This creates a BigInteger with value 0.
final