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*Subject*: **Mathematical formulas - general**

*From*:**Patrick Durusau <patrick@durusau.net>***To*: office-formula@lists.oasis-open.org*Date*: Tue, 01 Dec 2009 20:06:59 -0500

Greetings! OK, the intro text reads: > This section describes functions for various mathematical functions, > including trigonometric functions like SIN <file:///SIN>). Note that > the constraint text presumes that a value of type Number is a real > number (no imaginary component). Unless noted otherwise, all angle > measurements are in radians. > Err, what "the constraint text presumes that a value of type Number is a real number (no imaginary component)."? Ah, after taking a break, does this mean that N in the "constraints" text of each function is supposed to be of type Number and a real number? Err, ok, so what happens with ABS? "Constraints: None." Does that mean I can apply ABS to a complex number? (it is defined but I suspect we mean to exclude that and other definitions for absolute value). Ouch. If true, two possible JIRA issues to file: 1) Explicitly state that all functions in mathematical functions accept N of type Number and real number. (Or do we define real number or a source where we can simply cite it?) 2) Once that is corrected, do we need to do anything about an unconstrained ABS function? Hope everyone is having a great day! Patrick -- Patrick Durusau patrick@durusau.net Chair, V1 - US TAG to JTC 1/SC 34 Convener, JTC 1/SC 34/WG 3 (Topic Maps) Editor, OpenDocument Format TC (OASIS), Project Editor ISO/IEC 26300 Co-Editor, ISO/IEC 13250-1, 13250-5 (Topic Maps)

**Follow-Ups**:**Re: [office-formula] Mathematical formulas - general***From:*robert_weir@us.ibm.com

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