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--- Returns absolute value of v.
function abs(v)
--- Returns arc cosine value of v in radians.
function acos(v)
--- Returns arc sine value of v in radians.
function asin(v)
--- Returns arc tangent value of v in radians.
function atan(v)
--- Returns arc tangent value of v1/v2 in radians.
function atan2(v1, v2)
--- Returns smallest integer >= v.
function ceil(v)
--- Returns cosine value of angle rad.
function cos(rad)
--- Returns angle in degrees of radians rad.
function deg(rad)
--- Returns e^v.
function exp(v)
--- Returns largest integer <= v.
function floor(v)
--- Returns mantissa [0.5,1) and exponent values of v.
function frexp(v)
--- Returns v1*2^v2.
function ldexp(v1, v2)
--- Returns natural logarithm of v.
function log(v)
--- Returns logarithm 10 of v.
function log10(v)
--- Returns maximum in a list of one or more values.
function max(v1, ...)
--- Returns minimum in a list of one or more values.
function min(v1, ...)
--- Returns remainder of v1/v2 which is v1 - iV2 for some integer i.
function mod(v1, v2)
--- Returns v1 raised to the power of v2.
function pow(v1, v2)
--- Returns angle in radians of degrees deg.
function rad(deg)
--- Returns random real [0,1), integer [1,n] or real [1,u](with n=1).
function random([n [, u]])
--- Sets seed for pseudo-random number generator.
function randomseed(seed)
--- Returns sine value of angle rad .
function sin(rad)
--- Returns square root of v.
function sqrt(v)
--- Returns tangent value of angle rad.
function tan(rad)
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