merge utils.rs into bindings.rs

[jorenham]

No description provided.

[Copilot]

Pull Request Overview

This PR consolidates utility functions by merging utils.rs into bindings.rs, eliminating a separate module for a single utility function. The c_complex64_nan() function is moved to bindings.rs and renamed to complex_nan() for better consistency with the module's purpose.

• Removed the utils.rs module entirely
• Moved the c_complex64_nan() function to bindings.rs as complex_nan()
• Updated all call sites to use the new function location and name

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/utils.rs	Deleted the entire file containing the c_complex64_nan() function
src/lib.rs	Removed the mod utils; declaration
src/bindings.rs	Added the complex_nan() function and reorganized imports
src/sici.rs	Updated function calls and removed utils import
src/kelvin.rs	Updated function calls and removed utils import
src/fresnel.rs	Updated function calls and removed utils import
src/airy.rs	Updated function calls and removed utils import

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