Re: Checking for non-complex numerics
- To: mathgroup at smc.vnet.net
- Subject: [mg21024] Re: [mg20983] Checking for non-complex numerics
- From: BobHanlon at aol.com
- Date: Thu, 2 Dec 1999 21:41:35 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
NonComplexQ[x_] := NumericQ[x] && FreeQ[x, Complex];
a = -1.5;
NonComplexQ[#] & /@ {Pi, E, 1, -2.6, a, b, Pi I, 1.1 + 3I}
{True, True, True, True, True, False, False, False}
Bob Hanlon
In a message dated 12/1/1999 3:38:29 AM, noname at noname.com writes:
>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.
>
>a=-1.5;
>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.
>