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<li><A href="./qrfunc00.html">Including Source Files</A></li>
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<li><A href="./qrfunc02.html">Issuing Shell Commands</A></li>
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<h1>Yorick Function Reference</h1>
<h2>Elementary Functions</h2>
<p><tt>abs, sign </tt> absolute value, arithmetic sign
<br><tt>sqrt </tt> square root
<br><tt>floor, ceil </tt> round down, round up to integer
<br><tt>conj </tt> complex conjugation
<br><tt>pi </tt> the constant 3.14159265358979323846...
<br><tt>sin, cos, tan </tt> trigonometric functions (of radians)
<br><tt>asin, acos, atan </tt> inverse trigonometric functions
<br><tt>sinh, cosh, tanh, sech, csch </tt> hyperbolic functions
<br><tt>asinh, acosh, atanh </tt> inverse hyperbolic functions
<br><tt>exp, log, log10 </tt> exponential and logarithmic functions
<br><tt>min, max </tt> find minimum, maximum of array
<br><tt>sum, avg </tt> find sum, average of array
<br><tt>random </tt> random number generator
</p>
<p>The <tt>atan</tt> function takes one or two arguments; <tt>atan(t)</tt>
returns a value in the range (-<font face="symbol">p</font>/2,<font face="symbol">p</font>/2]),
while <tt>atan(y,x)</tt> returns the counterclockwise angle from (1,0)
to (x,y) in the range (-<font face="symbol">p</font>,<font face="symbol">p</font>]).
</p>
<p>The <tt>abs</tt> function allows any number of arguments; for example,
<tt>abs(x,y,z)</tt> is the same as <tt>sqrt(x^2+y^2+z^2)</tt>. The <tt>sign</tt>
satisfies <tt>sign(0)==1</tt> and <tt>abs(z)*sign(z)==z</tt> always (even
when <tt>z</tt> is <tt>complex</tt>).
</p>
<p>The <tt>min</tt> and <tt>max</tt> functions return a scalar result when
presented with a single argument, but the pointwise minimum or maximum
when presented with multiple arguments.
</p>
<p>The <tt>min</tt>, <tt>max</tt>, <tt>sum</tt>, and single argument <tt>abs</tt>
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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