The Eisel-Lemire ParseNumberF64 Algorithm Summary: ParseNumberF64, StringToDouble and similarly named functions take a string like "12.5" (one two dot five) and return a 64-bit double-precision floating point number like 12.5 (twelve point five). Some numbers (like 12.3) aren’t exactly representable as an f64 but ParseNumberF64 still has to return the best approximation. In March 2020, Daniel Lemi