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In C++, what is the correct syntax to implement the expression of "10 log e"?


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On Tue, 22 Nov 2005 21:14:01 -0800, "Charles Tam"

<CharlesTam@discussions.microsoft.com>wrote:



It's not clear what you mean. If you mean "ten times the natural logarithm

of e" then a good way to implement it would be



10



If you mean "ten times the common logarithm of e" then ...



10 * log10(exp(1))



If you want something else, be clearer.

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- Vince

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"Charles Tam" <CharlesTam@discussions.microsoft.com>wrote:

What do you mean by that? Do you mean the log of 10 in base e? That is,

the natural log of 10? That's actually defined as a constant in math.h,

M_LN10.



If you want to know how to take the natural log of an arbitrary floating

point value, use log(x).

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- Tim Roberts, timr@probo.com

Providenza & Boekelheide, Inc.

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I meant "ten times the common logarithm of e", thanks.



"Vincent Fatica" wrote:

Charles Tam <CharlesTam@discussions.microsoft.com>wrote:

10 * M_LOG10E



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With best wishes,

Igor Tandetnik



With sufficient thrust, pigs fly just fine. However, this is not

necessarily a good idea. It is hard to be sure where they are going to

land, and it could be dangerous sitting under them as they fly

overhead. -- RFC 1925





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