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Talk:Factorial: Difference between revisions
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==range limits for the factorial function==
Just a thought...it would be interesting to programmatically identify the range limits of the factorial function for the unknown implementation. (The C and c++ implementations, for example, will overflow at different places depending on the range of int.) --[[User:Short Circuit|Short Circuit]] 18:33, 30 January 2009 (UTC)
: Yes, for non-native speakers of any language, it would be nice to know how big the '''thingys''' are: ''int, short, long, long long'', etc. For experienced programmers, I imagine this is old hat, but to programmers who can barely spell '''C''', ... not so obvious. --- [[User:Gerard Schildberger|Gerard Schildberger]] 21:35, 30 May 2012 (UTC)
<pre>
┌────────────────────────────────────────────────────────────────┐
│ ───── Some factorial lengths ───── │
│ │
│ 10 ! = 7 digits │
│ 20 ! = 19 digits │
│ 52 ! = 68 digits │
│ 104 ! = 167 digits │
│ 208 ! = 394 digits │
│ 416 ! = 911 digits (8 deck shoe) │
│ │
│ 1k ! = 2,568 digits │
│ 10k ! = 35,660 digits │
│ 100k ! = 456,574 digits │
│ │
│ 1m ! = 5,565,709 digits │
│ 10m ! = 65,657,060 digits │
│ 100m ! = 756,570,556 digits │
└────────────────────────────────────────────────────────────────┘
</pre>
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In the table above, the factorial length for <b>416!</b> should be <b>911</b> rather than <b>394</b>. Used [[www.javascripter.net/math/calculators/100digitbigintcalculator.htm]] to verify.
01:27, 12 January 2015 (UTC)</strike>
: Yes, it was inadvertently copied from the previous line. -- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 01:36, 12 January 2015 (UTC)
== The moving of 80386 to x86 Assembly ==
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I think it is better to use generic x86, and at most to specify a "works with", if needed, rather than let proliferate 80286, 80386, 80486, ... —[[User:ShinTakezou|ShinTakezou]] 14:56, 27 April 2010 (UTC)
: I agree to a point; there's a definite progression and tendency toward backwards-compatibility. However, there are incompatible revisions. It's possible that different modes (real, protected, long and legacy) warrant some degree of recognition as their own languages--these modes represent forward and reverse compatibility constraints. --[[User:Short Circuit|Michael Mol]] 16:03, 27 April 2010 (UTC)
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==D output==
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Is the '''D''' output supposed to show (eight times) the value of ('''15!''') ?
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-- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 19:54, 26 May 2013 (UTC)
(This has been addressed and fixed.) -- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 21:44, 26 May 2013 (UTC)
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