--- standard mathematical functions. -- @module math local math = {} --- -- Returns the absolute value of `x`. function math.abs(x) end --- -- Returns the arc cosine of `x` (in radians). function math.acos(x) end --- -- Returns the arc sine of `x` (in radians). function math.asin(x) end --- -- Returns the arc tangent of `x` (in radians). function math.atan(x) end --- -- 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.) function math.atan2(y, x) end --- -- Returns the smallest integer larger than or equal to `x`. function math.ceil(x) end --- -- Returns the cosine of `x` (assumed to be in radians). function math.cos(x) end --- -- Returns the hyperbolic cosine of `x`. function math.cosh(x) end --- -- Returns the angle `x` (given in radians) in degrees. function math.deg(x) end --- -- Returns the value *e^x*. function math.exp(x) end --- -- Returns the largest integer smaller than or equal to `x`. function math.floor(x) end --- -- Returns the remainder of the division of `x` by `y` that rounds the -- quotient towards zero. function math.fmod(x, y) end --- -- 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). function math.frexp(x) end --- -- The value `HUGE_VAL`, a value larger than or equal to any other -- numerical value. -- function math.huge end -- * `math.HUGE_VAL`: math.HUGE_VAL --- -- Returns *m2^e* (`e` should be an integer). function math.ldexp(m, e) end --- -- Returns the natural logarithm of `x`. function math.log(x) end --- -- Returns the base-10 logarithm of `x`. function math.log10(x) end --- -- Returns the maximum value among its arguments. function math.max(x, ...) end --- -- Returns the minimum value among its arguments. function math.min(x, ...) end --- -- Returns two numbers, the integral part of `x` and the fractional part of -- `x`. function math.modf(x) end --- -- The value of *pi*. -- function math.pi end -- * `math.pi`: math.pi --- -- Returns *x^y*. (You can also use the expression `x^y` to compute this -- value.) function math.pow(x, y) end --- -- Returns the angle `x` (given in degrees) in radians. function math.rad(x) end --- -- 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]*. function math.random(m , n) end --- -- Sets `x` as the "seed" for the pseudo-random generator: equal seeds -- produce equal sequences of numbers. function math.randomseed(x) end --- -- Returns the sine of `x` (assumed to be in radians). function math.sin(x) end --- -- Returns the hyperbolic sine of `x`. function math.sinh(x) end --- -- Returns the square root of `x`. (You can also use the expression `x^0.5` -- to compute this value.) function math.sqrt(x) end --- -- Returns the tangent of `x` (assumed to be in radians). function math.tan(x) end --- -- Returns the hyperbolic tangent of `x`. function math.tanh(x) end return math