Math512Bits
Table of contents
Constructors
Methods
Constructors
constructor
• new Math512Bits(): Math512Bits
Returns
Methods
mulDivRoundDown
▸ mulDivRoundDown(x, y, denominator): u256
Calculates floor(x*y÷denominator) with full precision The result will be rounded down
Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
Requirements:
- The denominator cannot be zero
- The result must fit within u256
Caveats:
- This function does not work with fixed-point numbers
Parameters
| Name | Type | Description |
|---|---|---|
x | u256 | The multiplicand as an u256 |
y | u256 | The multiplier as an u256 |
denominator | u256 | The divisor as an u256 |
Returns
u256
The result as an u256
Defined in
assembly/libraries/Math512Bits.ts:40
mulShiftRoundDown
▸ mulShiftRoundDown(x, y, offset): u256
Calculates x * y >> offset with full precision The result will be rounded down
Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
Requirements:
- The offset needs to be strictly lower than 256
- The result must fit within u256
Caveats:
- This function does not work with fixed-point numbers
Parameters
| Name | Type | Description |
|---|---|---|
x | u256 | The multiplicand as an u256 |
y | u256 | The multiplier as an u256 |
offset | i32 | The offset, can't be greater than 255 |
Returns
u256
The result as an u256
Defined in
assembly/libraries/Math512Bits.ts:100
mulShiftRoundUp
▸ mulShiftRoundUp(x, y, offset): u256
Calculates x * y >> offset with full precision The result will be rounded up
Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
Requirements:
- The offset needs to be strictly lower than 256
- The result must fit within u256
Caveats:
- This function does not work with fixed-point numbers
Parameters
| Name | Type | Description |
|---|---|---|
x | u256 | The multiplicand as an u256 |
y | u256 | The multiplier as an u256 |
offset | i32 | The offset, can't be greater than 128 |
Returns
u256
The result as an u256
Defined in
assembly/libraries/Math512Bits.ts:172
shiftDivRoundDown
▸ shiftDivRoundDown(x, offset, denominator): u256
Calculates x << offset / y with full precision The result will be rounded down
Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
Requirements:
- The offset needs to be strictly lower than 256
- The result must fit within u256
Caveats:
- This function does not work with fixed-point numbers
Parameters
| Name | Type | Description |
|---|---|---|
x | u256 | The multiplicand as an u256 |
offset | i32 | The number of bit to shift x |
denominator | u256 | The divisor as an u256 |
Returns
u256
The result as an u256
Defined in
assembly/libraries/Math512Bits.ts:71
shiftDivRoundUp
▸ shiftDivRoundUp(x, offset, denominator): u256
Calculates x << offset / y with full precision The result will be rounded up
Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
Requirements:
- The offset needs to be strictly lower than 256
- The result must fit within u256
Caveats:
- This function does not work with fixed-point numbers
Parameters
| Name | Type | Description |
|---|---|---|
x | u256 | The multiplicand as an u256 |
offset | i32 | The number of bit to shift x |
denominator | u256 | The divisor as an u256 |
Returns
u256
The result as an u256