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version 2.109.1

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std.bigint.BigInt.this - multiple declarations

Function BigInt.this

Construct a BigInt from a decimal or hexadecimal string. The number must be in the form of a decimal or hex literal. It may have a leading + or - sign, followed by 0x or 0X if hexadecimal. Underscores are permitted in any location after the 0x and/or the sign of the number.

this(Range) (
  Range s
)
if (isBidirectionalRange!Range && isSomeChar!(ElementType!Range) && !isInfinite!Range && !isNarrowString!Range);

this(Range) (
  Range s
) pure
if (isNarrowString!Range);

Parameters

NameDescription
s a finite bidirectional range of any character type

Throws

ConvException if the string doesn't represent a valid number

Function BigInt.this

Construct a BigInt from a sign and a magnitude.

this(Range) (
  bool isNegative,
  Range magnitude
)
if (isInputRange!Range && isUnsigned!(ElementType!Range) && (hasLength!Range || isForwardRange!Range) && !isInfinite!Range);

The magnitude is an input range of unsigned integers that satisfies either hasLength or isForwardRange. The first (leftmost) element of the magnitude is considered the most significant.

Parameters

NameDescription
isNegative true for negative, false for non-negative (ignored when magnitude is zero)
magnitude a finite range of unsigned integers

Example

ubyte[] magnitude = [1, 2, 3, 4, 5, 6];
auto b1 = BigInt(false, magnitude);
writeln(cast(long)b1); // 0x01_02_03_04_05_06L
auto b2 = BigInt(true, magnitude);
writeln(cast(long)b2); // -0x01_02_03_04_05_06L

Function BigInt.this

Construct a BigInt from a built-in integral type.

this(T) (
  T x
) pure nothrow @safe
if (isIntegral!T);

Example

ulong data = 1_000_000_000_000;
auto bigData = BigInt(data);
writeln(bigData); // BigInt("1_000_000_000_000")

Function BigInt.this

Construct a BigInt from another BigInt.

this(T) (
  T x
) pure nothrow @safe
if (is(immutable(T) == immutable(BigInt)));

Example

const(BigInt) b1 = BigInt("1_234_567_890");
BigInt b2 = BigInt(b1);
writeln(b2); // BigInt("1_234_567_890")

Authors

Don Clugston

License

Boost License 1.0.