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Enhanced Calculator: Scientific Functions, Currency Conversion & 3D UI - #1

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Enhanced Calculator: Scientific Functions, Currency Conversion & 3D UI#1
srj0224 wants to merge 2 commits into
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devin/1725378847-enhanced-calculator

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@srj0224 srj0224 commented Sep 3, 2025 •
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Enhanced Calculator: Scientific Functions, Currency Conversion & 3D UI

Summary

This PR transforms the existing basic calculator into a comprehensive multi-mode application with three distinct functionalities:

🧮 Scientific Calculator Mode

  • Adds trigonometric functions (sin, cos, tan) with degree/radian toggle
  • Logarithmic functions (log, ln), square root, and exponentiation
  • Mathematical constants (π, e) as dedicated buttons
  • Enhanced expression parser using modified Shunting-yard algorithm

💱 Currency Conversion Mode

  • Real-time currency conversion using ExchangeRate-API
  • Support for 9 major world currencies (USD, EUR, GBP, JPY, CAD, AUD, CHF, CNY, INR)
  • Exchange rate caching and error handling for API failures
  • Clean conversion interface with dropdown selectors

🎨 Enhanced UI/UX

  • Subtle 3D visual effects using CSS perspective transforms
  • Mode toggle buttons for seamless switching between Basic/Scientific/Currency
  • Improved button animations with hover/active states
  • Enhanced dark theme support across all modes
  • Removed author attribution for professional appearance
  • Maintained responsive design for all screen sizes

Review & Testing Checklist for Human

This is a high-risk PR due to its scope and complexity. Please test thoroughly:

  • Test scientific functions accuracy - Verify sin(90°)=1, cos(0°)=1, tan(45°)=1, and that degree/radian toggle works correctly
  • Validate currency conversion - Test with different currency pairs, verify exchange rates are reasonable, and check error handling when offline
  • Cross-browser compatibility - Ensure 3D CSS transforms render correctly across different browsers and don't impact performance
  • Mobile responsiveness - Test scientific/currency modes on mobile viewport to ensure proper layout on small screens
  • Error handling robustness - Test invalid mathematical expressions, network failures, and edge cases in all modes

Notes

  • Session Details: Requested by @srj0224 | Link to Devin run
  • API Dependency: Currency conversion requires internet connection and relies on exchangerate-api.com
  • Browser Support: 3D CSS transforms may not work on older browsers
  • Mathematical Engine: Core calculation logic was significantly modified - thorough testing of edge cases recommended
  • State Persistence: Calculator mode and angle mode preferences are saved to localStorage

@devin-ai-integration @srj0224
Enhance calculator with scientific functions, currency conversion, an…
93fb9c5 
…d 3D UI effects

- Add scientific calculator mode with trigonometric functions (sin, cos, tan)
- Add logarithmic functions (log, ln), square root, and exponentiation
- Implement degree/radian toggle for trigonometric calculations
- Add currency conversion feature with real-time exchange rates via API
- Support for major world currencies (USD, EUR, GBP, JPY, CAD, AUD, CHF, CNY, INR)
- Enhance UI with subtle 3D visual effects using CSS transforms
- Add mode switching between Basic, Scientific, and Currency modes
- Improve button styling with hover animations and depth effects
- Maintain existing functionality: basic arithmetic, theme toggle, history
- Ensure responsive design across all screen sizes
- Add proper error handling for API failures and invalid inputs

Co-Authored-By: [email protected] <[email protected]>
@devin-ai-integration

devin-ai-integration Bot commented Sep 3, 2025

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🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

  • Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
  • Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

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@devin-ai-integration @srj0224
Remove author attribution footer for professional calculator appearance
3e088b4 
- Remove 'Made with ❤ by Harsh Trivedi' footer section
- Clean up calculator interface to look more like actual calculator
- Maintain all existing functionality and 3D styling effects

Co-Authored-By: [email protected] <[email protected]>
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@srj0224