Description of Change

Summary

This Pull Request addresses several compiler warnings found when compiling the repository with strict compiler flags (e.g., Clang 17.0.0 on macOS, which uses -Wall). These changes ensure better code quality, portability, and adherence to modern C standards without altering the functionality of the algorithms.

Specific Warnings Fixed

1. Implicit Unsigned Literals (-Wimplicitly-unsigned-literal):
   • Fixed by adding theULL suffix to large constants indecimal_to_any_base.c andhash_djb2.c.
2. Double/Float Mismatch (-Wabsolute-value):
   • Changedfabsf to the double-precision functionfabs ingeometry/vectors_3d.c because the variablealpha is of typedouble.
3. Const-Correctness (-Wincompatible-pointer-types-discards-qualifiers):
   • Applied an explicit cast(const int **) in themain function ofmodified_binary_search.c to match the function signature, resolving the const-discarding warning.
4. Format Mismatch (-Wformat):
   • Corrected the format specifier forscanf incollatz.c to%llu to correctly read into auint64_t.
   • Corrected theprintf format specifier inshell_sort2.c from%.4g (double) to%.4lu (unsigned long) for printingclock_t differences.
5. Misc:
   • Simplified array iteration initialization inprime_factoriziation.c (C99 style initialization inside thefor loop).

Thank you for reviewing!

Checklist

• Added description of change
• PR title follows semanticcommit guidelines
• Search previous suggestions before making a new one, as yours may be a duplicate.
• I acknowledge that all my contributions will be made under the project's license.

Notes: