Worked on the golang/go repository to address floating-point arithmetic correctness in the runtime’s softfloat path, focusing on normalization for subnormal results. Delivered a targeted bug fix in Go that corrected mantissa alignment and ensured consistent behavior between fpack64 and fpack32, preserving normalized mantissa and exponent values during denormal handling. The solution was validated through randomized differential checks against hardware, confirming accuracy in subnormal-cancellation scenarios without impacting hardware-float platforms or callers with pre-normalized mantissas. This work demonstrated backend development expertise and a deep understanding of floating-point arithmetic and software optimization, contributing to more reliable numerical computations in Go’s runtime.