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| ANSI Common Lisp 12 Numbers 12.2 Dictionary of Numbers
12.2.74 float | Function
  Syntax: float number `&optional` prototype float Arguments and Values: number - a real. prototype - a float. float - a float. Description: float converts a real number to a float. If a prototype is supplied, a float is returned that is mathematically equal to number but has the same format as prototype. If prototype is not supplied, then if the number is already a float, it is returned; otherwise, a float is returned that is mathematically equal to number but is a single float. Examples:
       (float 0)  0.0
       (float 1 .5)  1.0
       (float 1.0)  1.0
       (float 1/2)  0.5
       1.0d0
      OR1.0
       (eql (float 1.0 1.0d0) 1.0d0)  true
See Also: coerce Allegro CL Implementation Details: None.

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