MathGroup Archive 1999

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Checking for non-complex numerics

  • To: mathgroup at
  • Subject: [mg20983] Checking for non-complex numerics
  • From: "DIAMOND Mark" <noname at>
  • Date: Wed, 1 Dec 1999 01:50:56 -0500 (EST)
  • Organization: The University of Western Australia
  • Sender: owner-wri-mathgroup at

I would like a function that returns True for non-complex numerics only. To
be more specific, anything that results in NumericQ returning True is OK,
such as Pi, E, 1, -2.6.

followed by NonComplexQ[a] should return True. But
NonComplexQ[b] and NonComplexQ[Pi I] should return False as should
NonComplexQ[1.1 + 3 I].

I have been able to a function that satisfies various subsets of these
conditions, but not the whole lot ... yet it seems the kind of problem for
which there should be a simple and obvious solution.

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