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1744 :: math.frexp example

• hxsn (orginal) [2015-10-28T17:26:26+01:00] view original

  I've been working on porting some Python code to Nim, but I've run into issues with math.frexp. Could someone please give an example of how the "exponent: var int" parameter notation works?

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• jlp765 (orginal) [2015-10-28T21:15:39+01:00] view original

  
  import math
  
  var
    x: float = 1.5
    m: int = 0
    n: float = 0.0
  
  n = frexp(x,m)
  echo "n: ",n," m: ", m, " check: ", m.float * pow(2,n)     # n: 0.75 m: 1 check: 1.681792830507429
  Run

  If you are wanting to decompose a float into integer based representations, have a look at the toRational() proc in the Rationals module.

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• hxsn (orginal) [2015-10-28T22:40:02+01:00] view original

  Thank you very much!

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