Skip to main content

Module std::u256

use std::ascii;
use std::option;
use std::string;
use std::vector;

Function bitwise_not​

Returns the bitwise not of the value.
Each bit that is 1 becomes 0. Each bit that is 0 becomes 1.

public fun bitwise_not(x: u256): u256

Function max​

Return the larger of x and y

public fun max(x: u256, y: u256): u256

Function min​

Return the smaller of x and y

public fun min(x: u256, y: u256): u256

Function diff​

Return the absolute value of x - y

public fun diff(x: u256, y: u256): u256

Function divide_and_round_up​

Calculate x / y, but round up the result.

public fun divide_and_round_up(x: u256, y: u256): u256

Function pow​

Return the value of a base raised to a power

public fun pow(base: u256, exponent: u8): u256

Function try_as_u8​

Try to convert a u256 to a u8. Returns None if the value is too large.

public fun try_as_u8(x: u256): std::option::Option<u8>

Function try_as_u16​

Try to convert a u256 to a u16. Returns None if the value is too large.

public fun try_as_u16(x: u256): std::option::Option<u16>

Function try_as_u32​

Try to convert a u256 to a u32. Returns None if the value is too large.

public fun try_as_u32(x: u256): std::option::Option<u32>

Function try_as_u64​

Try to convert a u256 to a u64. Returns None if the value is too large.

public fun try_as_u64(x: u256): std::option::Option<u64>

Function try_as_u128​

Try to convert a u256 to a u128. Returns None if the value is too large.

public fun try_as_u128(x: u256): std::option::Option<u128>

Function to_string​

public fun to_string(x: u256): std::string::String

Function checked_add​

Try to add x and y.
Returns None if the addition would overflow.

public fun checked_add(x: u256, y: u256): std::option::Option<u256>

Function checked_sub​

Try to subtract y from x.
Returns None if y > x.

public fun checked_sub(x: u256, y: u256): std::option::Option<u256>

Function checked_mul​

Try to multiply x and y.
Returns None if the multiplication would overflow.

public fun checked_mul(x: u256, y: u256): std::option::Option<u256>

Function checked_div​

Try to divide x by y.
Returns None if y is zero.

public fun checked_div(x: u256, y: u256): std::option::Option<u256>

Function saturating_add​

Add x and y, saturating at the maximum value instead of overflowing.

public fun saturating_add(x: u256, y: u256): u256

Function saturating_sub​

Subtract y from x, saturating at 0 instead of underflowing.

public fun saturating_sub(x: u256, y: u256): u256

Function saturating_mul​

Multiply x and y, saturating at the maximum value instead of overflowing.

public fun saturating_mul(x: u256, y: u256): u256

Function lossless_shl​

Shifts x left by shift bits.
Returns None if the shift would lose any bits (if the operation is not reversible).

public fun lossless_shl(x: u256, shift: u8): std::option::Option<u256>

Function lossless_shr​

Shifts x right by shift bits.
Returns None if the shift would lose any bits (if the operation is not reversible).

public fun lossless_shr(x: u256, shift: u8): std::option::Option<u256>

Function lossless_div​

Divides x by y.
Returns None if y is zero or if there is a non-zero remainder (if x % y != 0). In other words, it returns None if the operation is not reversible.

public fun lossless_div(x: u256, y: u256): std::option::Option<u256>

Macro function max_value​

Maximum value for a u256

public macro fun max_value(): u256

Macro function range_do​

Loops applying $f to each number from $start to $stop (exclusive)

public macro fun range_do<$R: drop>($start: u256, $stop: u256, $f: |u256| -> $R)

Macro function range_do_eq​

Loops applying $f to each number from $start to $stop (inclusive)

public macro fun range_do_eq<$R: drop>($start: u256, $stop: u256, $f: |u256| -> $R)

Macro function do​

Loops applying $f to each number from 0 to $stop (exclusive)

public macro fun do<$R: drop>($stop: u256, $f: |u256| -> $R)

Macro function do_eq​

Loops applying $f to each number from 0 to $stop (inclusive)

public macro fun do_eq<$R: drop>($stop: u256, $f: |u256| -> $R)