math.abs
math.acos
math.asin
math.atan
math.atan2
math.ceil
math.cos
math.cosh
math.deg
math.exp
math.floor
math.fmod
math.frexp
math.huge
math.ldexp
math.log
math.max
math.min
math.modf
math.pi
math.pow
math.rad
math.random
math.randomseed
math.sin
math.sinh
math.sqrt
math.tan
math.tanh

NAME

math - mathematical functions (standard library)

OVERVIEW

This library is an interface to the standard C math library. It provides all its functions inside the table math.

REFERENCE

`math.acos`

  math.acos (x)

Returns the arc cosine of x (in radians).

`math.asin`

  math.asin (x)

Returns the arc sine of x (in radians).

`math.atan`

  math.atan (x)

Returns the arc tangent of x (in radians).

`math.atan2`

  math.atan2 (x, y)

Returns the arc tangent of x/y (in radians), but uses the signs of both parameters to find the quadrant of the result. (It also handles correctly the case of y being zero.)

`math.ceil`

  math.ceil (x)

Returns the smallest integer larger than or equal to x.

`math.cos`

  math.cos (x)

Returns the cosine of x (assumed to be in radians).

`math.deg` math.deg (x)

Returns the angle x (given in radians) in degrees.

`math.floor`

  math.floor (x)

Returns the largest integer smaller than or equal to x.

`math.fmod`

math.fmod (x, y)

Returns the remainder of the division of x by y.

`math.frexp`

math.frexp (x)

Returns m and e such that x = m2^e, e is an integer and the absolute value of m is in the range [0.5, 1) (or zero when x is zero).

`math.huge`

  math.huge

The value HUGE_VAL, a value larger than or equal to any other numerical value.

`math.ldexp`

  math.ldexp (m, e)

Returns m2^e (e should be an integer).

`math.max`

  math.max (x, ...)

Returns the maximum value among its arguments.

`math.min`

  math.min (x, ...)

Returns the minimum value among its arguments.

`math.modf`

  math.modf (x)

Returns two numbers, the integral part of x and the fractional part of x.

`math.pow`

  math.pow (x, y)

Returns x^y. (You can also use the expression x^y to compute this value.)

`math.rad`

  math.rad (x)

Returns the angle x (given in degrees) in radians.

`math.random`

  math.random ([m [, n]])

This function is an interface to the simple pseudo-random generator function rand provided by ANSI C. (No guarantees can be given for its statistical properties.)

When called without arguments, returns a pseudo-random real number in the range [0,1). When called with a number m, math.random returns a pseudo-random integer in the range [1, m]. When called with two numbers m and n, math.random returns a pseudo-random integer in the range [m, n].

`math.randomseed`

  math.randomseed (x)

Sets x as the ``seed'' for the pseudo-random generator: equal seeds produce equal sequences of numbers.

`math.sin`

  math.sin (x)

Returns the sine of x (assumed to be in radians).

`math.sinh`

  math.sinh (x)

Returns the hyperbolic sine of x.

`math.sqrt`

  math.sqrt (x)

Returns the square root of x. (You can also use the expression x^0.5 to compute this value.)

`math.tan`

  math.tan (x)

Returns the tangent of x (assumed to be in radians).

`math.tanh`

  math.tanh (x)

Returns the hyperbolic tangent of x.

VERSION

This is Lua version 5.1.1.

CREDITS

Lua is developed at Lua.org, a laboratory of the Department of Computer Science of PUC-Rio (the Pontifical Catholic University of Rio de Janeiro in Brazil). For more information about the authors, see http://www.lua.org/authors.html .

LICENSE

Lua is licensed under the terms of the MIT license reproduced below. This means that Lua is free software and can be used for both academic and commercial purposes at absolutely no cost.

For details and rationale, see http://www.lua.org/license.html .

~~~~~

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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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