Module math_lib 

Standard mathematical library — math.*.

The PRNG is xoshiro256** operating on four 64-bit words (the single 64-bit code path; there is no 32-bit fallback to keep).

The deprecated LUA_COMPAT_MATHLIB roster (cosh, sinh, tanh, pow, log10, atan2) ships in the default 5.1/5.2/5.3/5.4 builds and is dropped in 5.5; frexp/ldexp survive into 5.5. atan2 is an alias of math_atan. Which functions exist per version is the registration logic in luaopen_math.

Functions

luaopen_math

Open the math library: create the table, register the version-agnostic functions and the per-version roster delta, populate the constants, and wire up the PRNG functions.