Sunset, sunrise, twilight calculations in LC?

[Bob Sneidar]

floor = roundDown?

Bob


On Aug 23, 2014, at 09:13 , Earthednet-wp <prothero at earthednet.org> wrote:

> Richmond,
> Floor of a number is the largest integer that is less than or equal to the number. For positive numbers, it would be trunc(myNumber) but for negative numbers, floor(-4.34) would have to evaluate to -5. Probably trunc(myNum-1) would almost do it, but I'm not in LC to check all cases, e.g. floor(-4.0) should be -4. 
> Bill
> 
> William Prothero
> http://es.earthednet.org
> 
>> On Aug 23, 2014, at 8:09 AM, Richmond <richmondmathewson at gmail.com> wrote:
>> 
>>> On 23/08/14 17:44, Earthednet-wp wrote:
>>> I found this link. It might be easier to convert this code to LC.
>>> http://williams.best.vwh.net/sunrise_sunset_algorithm.htm
>>> Bill
>>> 
>>> William Prothero
>>> http://es.earthednet.org
>>> 
>>> 
>> 
>> That looks very good indeed: but I don't understand what 'floor' means.
>> 
>> Richmond.
>> 
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