Worked on the microsoft/documentdb repository to modularize numeric constants within the decimal128.c component, focusing on reducing header dependencies and improving build-time efficiency. The approach involved defining INFINITY_MASK64, SINFINITY_MASK64, and NAN_MASK64 directly in the source file, thereby eliminating reliance on the internal bid_internal.h header. This change reduced coupling between modules and laid the groundwork for further modularization and maintainability. The work was implemented in C, leveraging skills in embedded systems and low-level programming, and managed through Git-based workflows. No major bugs were reported or fixed during this period, with efforts concentrated on foundational code structure improvements.