# math

## Functions

 number math.abs ( ) Returns the absolute value of x
 number math.acos ( ) Returns the arc cosine of x
 number math.asin ( ) Returns the arc sine of x
 number math.atan ( ) Returns the arc tangent of x (in radians)
 number math.atan2 ( number y, ) Returns the arc tangent of y/x (in radians), but uses the signs of both parameters to find the quadrant of the result. It also handles correctly the case of x being zero.
 int math.ceil ( ) Returns the smallest integer larger than or equal to x.
 number math.clamp ( number x, number min, number max ) Returns a number between min and max, inclusive.
 number math.cos ( ) Returns the cosine of x (assumed to be in radians).
 number math.cosh ( ) Returns the hyperbolic cosine of x.
 number math.deg ( ) Returns the angle x (given in radians) in degrees.
 number math.exp ( ) Returns the value e^x.
 int math.floor ( ) Returns the largest integer smaller than or equal to x.
 number math.fmod ( number x, ) Returns the remainder of the division of x by y that rounds the quotient towards zero.
 number, int math.frexp ( ) Returns m and e such that x = m*2^e, e is an integer and the absolute value of m is in the range [0.5, 1) (or zero when x is zero).
 number math.ldexp ( number x, int e ) Returns m*2^e (e should be an integer).
 number math.log ( ) Returns the natural logarithm of x.
 number math.log10 ( ) Returns the base-10 logarithm of x.
 number math.max ( number x, number ... ) Returns the maximum value among the numbers passed to the function.
 number math.min ( number x, number ... ) Returns the minimum value among the numbers passed to the function.
 number, number math.modf ( ) Returns two numbers, the integral part of x and the fractional part of x.
 number math.noise ( number x = 0, number y = 0, number z = 0 ) Returns a perlin noise value between -1 and 1. If you leave arguments out, they will be interpreted as zero, so `math.noise(1.158)` is equivalent to `math.noise(1.158, 0, 0)` and `math.noise(1.158, 5.723)` is equivalent to `math.noise(1.158, 5.723, 0)`. The function uses a perlin noise algorithm to assign fixed values to coordinates. For example, `math.noise(1.158, 5.723)` will always return `0.48397532105446` and `math.noise(1.158, 6)` will always return `0.15315161645412`. If x, y and z are all integers, the return value will be 0. For fractional values of x, y and z, the return value will gradually fluctuate between -0.5 and 0.5. For coordinates that are close to each other, the return values will also be close to each other.
 number math.pow ( number x, ) Returns x^y. (You can also use the expression x^y to compute this value.)
 number math.rad ( ) Returns the angle x (given in degrees) in radians.
 number math.random ( number m = 0.0, number n = 1.0 ) 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 uniform pseudo-random real number in the range [0,1). When called with an integer number m, math.random returns a uniform pseudo-random integer in the range [1, m]. When called with two integer numbers m and n, math.random returns a uniform pseudo-random integer in the range [m, n].
 void math.randomseed ( ) Sets x as the seed for the pseudo-random generator: equal seeds produce equal sequences of numbers.
 int math.sign ( ) Returns -1 if x < 0, 0 if x == 0, or 1 if x > 0.
 number math.sin ( ) Returns the sine of x (assumed to be in radians).
 number math.sinh ( ) Returns the hyperbolic sine of x.
 number math.sqrt ( ) Returns the square root of x. (You can also use the expression x^0.5 to compute this value.)
 number math.tan ( ) Returns the tangent of x (assumed to be in radians).
 number math.tanh ( ) Returns the hyperbolic tangent of x.

## Constants

 number math.huge The value HUGE_VAL, a value larger than or equal to any other numerical value.
 number math.pi The value of pi.