wise-foundation / lending-audit

5 stars 4 forks source link

[DSN-01S] Illegible Numeric Value Representations #147

Open vm06007 opened 1 year ago

vm06007 commented 1 year ago

DSN-01S: Illegible Numeric Value Representations

Type Severity Location
Code Style Declarations.sol:L86, L87

Description:

The linked representations of numeric literals are sub-optimally represented decreasing the legibility of the codebase.

Example:

maxFeeUSD = 50000 * PRECISION_FACTOR_E18;

Recommendation:

To properly illustrate each value's purpose, we advise the following guidelines to be followed. For values meant to depict fractions with a base of 1e18, we advise fractions to be utilized directly (i.e. 1e17 becomes 0.1e18) as they are supported. For values meant to represent a percentage base, we advise each value to utilize the underscore (_) separator to discern the percentage decimal (i.e. 10000 becomes 100_00, 300 becomes 3_00 and so on). Finally, for large numeric values we simply advise the underscore character to be utilized again to represent them (i.e. 1000000 becomes 1_000_000).

vm06007 commented 1 year ago

this is probably most useless advice...

value already properly presented with taking in account precision factor, should the factor change then we only need to change the PRECISION_FACTOR_E18 value and all other values would follow without needing to modify each value on converting everywhere EAB to ECB (E18 to EXY) no changes intended here.