Threshold‑Logic Float16 Calculator

A gate‑level calculator built from threshold‑logic weights (IEEE‑754 float16).

Constants: pi, e, inf, nan. Functions: log, log2, log10, deg2rad, rad2deg, isnan, isinf, isfinite, iszero, issubnormal, isnormal, signbit, sin, cos, tan, asin, acos, atan, sinh, cosh, tanh, sqrt, rsqrt, floor, ceil, round, abs, neg. Pow uses exp(b*ln(a)). Results are float16.