<-- Lua reference description: Returns m and e such that x = m2e, e is an integer and the absolute value of m is in the range ((0.5, 1) (or zero when x is zero). --> Used to split the number value into a normalized fraction and an exponent. Two values are returned: the first is a multiplier in the range 1/2 (inclusive) to 1 (exclusive) and the second is an integer exponent.
The result is such that x = m*2^e.
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