Improve QuoteToBaseQuantums
#1554
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WalkthroughThe Changes
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Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (1)
- protocol/lib/quantums_test.go (1 hunks)
Additional Context Used
Path-based Instructions (1)
protocol/lib/quantums_test.go (1)
Pattern
**/**: Do not include a walkthrough. For all comments on line changes that are longer than 15 lines, add a prefix to the comment of what lines you are commenting on (for example: "The changes from lines 100 to 200...". Add your comment to be on the last 15 lines of the chunk rather than adding your comment to the entire chunk.
Additional comments not posted (1)
protocol/lib/quantums_test.go (1)
255-283: The new benchmark functionBenchmarkQuoteToBaseQuantumsis well-implemented and covers a variety of scenarios to ensure robustness. Good use ofrequire.Equalto validate the results.
protocol/lib/quantums.go
Outdated
| @@ -63,7 +63,7 @@ func BaseToQuoteQuantums( | |||
| // quoteQuantums / priceValue / | |||
| // 10^(priceExponent + baseCurrencyAtomicResolution - quoteCurrencyAtomicResolution) | |||
| // | |||
| // The result is rounded down. | |||
| // The result is rounded down. It is okay to do the divisions separately, as the result is the same. | |||
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Review Details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (1)
- protocol/lib/quantums.go (2 hunks)
Additional Context Used
Path-based Instructions (1)
protocol/lib/quantums.go (1)
Pattern
**/**: Do not include a walkthrough. For all comments on line changes that are longer than 15 lines, add a prefix to the comment of what lines you are commenting on (for example: "The changes from lines 100 to 200...". Add your comment to be on the last 15 lines of the chunk rather than adding your comment to the entire chunk.
Additional comments not posted (3)
protocol/lib/quantums.go (3)
Line range hint
66-94: Review ofQuoteToBaseQuantumsfunction changes.The changes in the function
QuoteToBaseQuantumsalign with the PR's objective to optimize performance by avoidingbig.Rat. The logic for handling positive and negative exponents (lines 81-85) and the separate division bypriceValue(line 88) are correctly implemented. Ensure that the new logic is covered by the new benchmark and existing unit tests to prevent regressions.
Line range hint
94-126: Review ofmultiplyByPricefunction.The function
multiplyByPriceappears to be correctly implemented with proper handling of big rational operations and exponent adjustments. It is crucial to ensure that changes inQuoteToBaseQuantumsdo not affect the logic inmultiplyByPrice, especially since it is used by other functions likeFundingRateToIndex.
Line range hint
1-64: Ensure consistency in handling exponents across functions.The function
BaseToQuoteQuantumsuses similar exponent handling logic. Verify that the changes inQuoteToBaseQuantumsdo not introduce inconsistencies in how exponents are managed across these functions. Consider aligning the handling of exponents and big integer operations in both functions to maintain uniformity and prevent logical errors.Verification successful
The search results indicate that both
BaseToQuoteQuantumsandQuoteToBaseQuantumshandle exponents in a similar manner. Specifically, both functions calculate the exponent aspriceExponent + baseCurrencyAtomicResolution - QuoteCurrencyAtomicResolutionand use similar logic for handling positive and negative exponents.
BaseToQuoteQuantums:
- Calculates the exponent.
- Checks if the exponent is zero.
- Uses
bigPow10Helperfor exponentiation.- Multiplies or divides based on the sign of the exponent.
QuoteToBaseQuantums:
- Calculates the exponent.
- Uses
BigPow10for exponentiation.- Divides based on the sign of the exponent.
Given the consistency in handling exponents and big integer operations, there are no discrepancies between the two functions.
Scripts Executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify consistency in exponent handling between `BaseToQuoteQuantums` and `QuoteToBaseQuantums`. # Test: Search for exponent handling logic in both functions. Expect: Similar logic and handling. rg --type go $'exponent' protocol/lib/quantums.goLength of output: 693
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Review Details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (1)
- protocol/lib/quantums.go (1 hunks)
Files skipped from review as they are similar to previous changes (1)
- protocol/lib/quantums.go
Changelist
big.Ratbig.RatanywhereTest Plan
Summary by CodeRabbit
Performance Improvements
QuoteToBaseQuantumsfunction for better efficiency.New Features
QuoteToBaseQuantumsto ensure performance under various scenarios.