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Re: 0.0 is different with 0?



Hi,

consider: fs_Real. This matches an expression with head Real. 0 (zero) 

has head Integer. 0. has head Real. If you want to test both cases , you 

may e.g. use: _?NumericQ.

hope this helps, Daniel



damayi wrote:

> Dear all

> Here is an example to show my question.

> SF[N_Integer, a_Real, fs_Real] :=

>  Table[Sin[(1 + fs)*k*2 Pi/N + a], {k, 0, N - 1}]

> 

> SF[32, 0.1, 0.0] can show the table contents, however, SF[32, 0.1, 0]

> cannot show the result. Why?

> 

> Best Regards

> mayi

> 2008-06-26

> 





-- 



Daniel Huber

Metrohm Ltd.

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CH-9100 Herisau

Tel. +41 71 353 8585, Fax +41 71 353 8907

E-Mail:<mailto:dh at metrohm.com>

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