Translations:User:Psychoslave//Lua reference manual translation stub/1591/en

Returns two values m and e such that:

• If x is finite and non-zero: $x=m\times 2^e$, e is an integer, and the absolute value of m is in the range $[0.5,1)$
• If x is zero: m and e are 0
• If x is NaN or infinite: m is x and e is not specified