Address add negative

[ternaus]

Summary by Sourcery

This pull request enhances the add, multiply, add_weighted, and multiply_add functions to handle negative values and weights. It also includes extensive new test cases to ensure the correctness of these enhancements and updates the benchmark results to reflect the performance changes.

• Enhancements:
  • Enhanced the add function to handle negative values and added corresponding test cases.
  • Improved the multiply function to handle negative values and added corresponding test cases.
  • Updated the add_weighted function to handle negative weights and added corresponding test cases.
  • Refined the multiply_add function to handle negative factors and values, with new test cases.
  • Modified the power function to handle various exponent formats and added new test cases.
• Tests:
  • Added extensive test cases for handling negative values in add, multiply, add_weighted, and multiply_add functions.
  • Updated benchmark results to reflect the performance of the new enhancements.

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This pull request adds support for handling negative values in addition and multiplication operations for uint8 and float32 images. It includes new test cases to ensure the correctness of these operations and updates benchmark results to reflect the performance of the new implementation. Significant changes include modifying the 'prepare_value_opencv' and 'apply_numpy' functions to handle negative values correctly, and updating the 'convert_value' utility function to simplify its logic.

File-Level Changes

Files	Changes
benchmark/results/float32_1.md benchmark/results/float32_3.md benchmark/results/float32_5.md benchmark/results/uint8_1.md benchmark/results/uint8_3.md benchmark/results/uint8_5.md	Updated benchmark results to include new performance metrics for albucore 0.0.10.

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #18 +/- ## ======================================= Coverage ? 54.91% ======================================= Files ? 14 Lines ? 1322 Branches ? 0 ======================================= Hits ? 726 Misses ? 596 Partials ? 0 ```

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