Questions tagged [fixed-point]
The fixed-point tag has no usage guidance.
7
questions
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votes
0answers
123 views
Converting Uniswap sqrtPriceX96 into wei
I'm trying to figure out how to convert a uniswap ratio into wei (and eventually ether).
The uniswap docs commonly mention sqrtPriceX96:
A Fixed point Q64.96 number representing the sqrt of the ratio ...
0
votes
1answer
29 views
How in Solidity can you get initial value from the sum of ratios to it?
In Solidity division of uint256 rounds down the value. Let's say I want to issue some token amount based on duration like this:
uint256 MAX_TIME = 365 days;
uint256 Duration1 = 223 days;
uint256 ...
0
votes
0answers
59 views
DeclarationError: Identifier already declared even with inline function call
I got error in my smart contract,
Pool.sol:10:1: DeclarationError: Identifier already declared.
import './ERC20.sol';
^------------------^
Token.sol:10:1: The previous declaration is here:
contract ...
0
votes
1answer
36 views
Rounding fixed point integers
If I'm using fixed-point arithmetic to represent rates, for example, 2% in ray (27 decimal precision) would be 102000000000000000000000000000.
If I had a rate like 101333333333333333333333333333 (1.33%...
0
votes
0answers
31 views
Can't store the value of a math operation. It's always 0
contract MyContract {
uint public priceUSD = 1.70 * 10**8; // USD
uint public priceEth;
.........
function setPrice(uint newPriceUSD) external ownerOnly() returns(uint, uint) {
uint ...
1
vote
1answer
104 views
Why don't decimals work in solidity?
I've read this question and answer thread about representing decimal values in solidity, and I understand that math is entirely done using fixed-point.
However, I'm curious as to why this is the case. ...
16
votes
4answers
11k views
Can't do any integer division
I'm building a new smart contract but really can't figure out how to perform integer division. I know that fixed point numbers haven't been implemented yet but it should be possible to perform 100/3 = ...