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*Subject*: ATAN function with two ARGS*From*: Ben Tupper <tupper(at)seadas.bigelow.org>*Date*: Mon, 05 Jun 2000 11:48:26 -0400*Newsgroups*: comp.lang.idl-pvwave*Organization*: Bigelow Laboratory for Ocean Sciences*Xref*: news.doit.wisc.edu comp.lang.idl-pvwave:19877

Hello, I have bumped into a conflict between the IDL documentation and IDL output. >From the IDL (5.2) docs, the optional argument Y is described as follows: -------START Y An optional argument. If this argument is supplied, ATAN returns the angle whose tangent is equal to Y/X. If both arguments are zero, the result is undefined. ------END So I tried the following... IDL> help, ATAN(0.0,0.0) <Expression> FLOAT = 0.00000 Uhoh! Is it me, or is it Monday morning syndrome? Ben -- Ben Tupper Bigelow Laboratory for Ocean Science tupper@seadas.bigelow.org pemaquidriver@tidewater.net

**Follow-Ups**:**Re: ATAN function with two ARGS***From:*David Fanning

**Re: ATAN function with two ARGS***From:*Ben Tupper

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