Diferencies ente revisiones de «Módulu:Math/usu»

To use the module from normal wiki pages, no special preparation is needed. If you are using the module from another Lua module, first you need to load it, like this:

 

local mm = require('Module:Math')

 

(The <code>mm</code> variable stands for '''M'''odule '''M'''ath; you can choose something more descriptive if you prefer.)

{{see also|Module:Random}}

 

 

mm._random()

mm._random(max_value)

mm._random(min_value, max_value)

 

Generates a random number.

* If two arguments are provided, the number produced is an integer between the first and second arguments. Both arguments must be integers, but can be negative.

 

 

== order ==

 

 

mm._order(n)

 

Determines the [[order of magnitude]] of a number.

== precision ==

 

 

mm._precision(number_string)

 

Detemines the precision of a number. For example, for "4" it will return "0", for "4.567" it will return "3", and for "100" it will return "-2".

== max ==

 

 

mm._max(v1, v2, v3, ...)

 

Returns the maximum value from the values specified. Values that cannot be converted to numbers are ignored.

== min ==

 

 

mm._min(v1, v2, v3, ...)

 

Returns the minimum value from the values specified. Values that cannot be converted to numbers are ignored.

== average ==

 

 

mm._average(v1, v2, v3, ...)

 

Returns the average of the values specified. (More precisely, the value returned is the [[Mean#Arithmetic mean (AM)|arithmetic mean]].) Values that cannot be converted to numbers are ignored.

== round ==

 

 

mm._round(value, precision)

 

[[Rounding|Rounds]] a number to the specified precision.

== mod ==

 

 

mm._mod(x, y)

 

Gets <code>''x''</code> [[Modulo operation|modulo]] <code>''y''</code>, or the remainder after <code>''x''</code> has been divided by <code>''y''</code>. This is accurate for integers up to 2^53; for larger integers Lua's modulo operator may return an erroneous value. This function deals with this problem by returning <code>0</code> if the modulo given by Lua's modulo operator is less than 0 or greater than <code>''y''</code>.

== gcd ==

 

 

mm._gcd(v1, v2, ...)

 

Finds the [[greatest common divisor]] of the values specified. Values that cannot be converted to numbers are ignored.

== precision_format ==

 

 

mm._precision_format(value_string, precision)

 

 

== cleanNumber ==

 

local number, number_string = mm._cleanNumber(number_string)

 

A helper function that can be called from other Lua modules, but not from #invoke. This takes a string or a number value as input, and if the value can be converted to a number, cleanNumber returns the number and the number string. If the value cannot be converted to a number, cleanNumber returns <code>nil, nil</code>.