| Yorick Function ReferenceElementary Functionsabs, sign         absolute value, arithmetic sign
sqrt              square root
 floor, ceil       round down, round up to integer
 conj              complex conjugation
 pi                the constant 3.14159265358979323846...
 sin, cos, tan     trigonometric functions (of radians)
 asin, acos, atan  inverse trigonometric functions
 sinh, cosh, tanh, sech, csch  hyperbolic functions
 asinh, acosh, atanh  inverse hyperbolic functions
 exp, log, log10   exponential and logarithmic functions
 min, max          find minimum, maximum of array
 sum, avg          find sum, average of array
 random            random number generator
 The atan function takes one or two arguments; atan(t)
returns a value in the range (-p/2,p/2]),
while atan(y,x) returns the counterclockwise angle from (1,0)
to (x,y) in the range (-p,p]).
 The abs function allows any number of arguments; for example,
abs(x,y,z) is the same as sqrt(x^2+y^2+z^2). The sign
satisfies sign(0)==1 and abs(z)*sign(z)==z always (even
when z is complex).
 The min and max functions return a scalar result when
presented with a single argument, but the pointwise minimum or maximum
when presented with multiple arguments.
 The min, max, sum, and single argument abs
functions return integer results when presented integer arguments; the
other functions will promote their arguments to a real type and return
reals.
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