Typed.Float64val zero : tval v : int64 -> tv bits creates a float64 from the raw integer bits.
val of_float : float -> tof_float f creates a float64 from an OCaml float value.
is_normal t checks if t is a normal floating point number (not zero, subnormal, infinite, or NaN).
reinterpret_i64 i reinterprets the bits of a 64-bit integer as a float64.