Shows Perl math functions providing examples of how to use the functions and what they do.
If an expression is not passed to many of these functions, except where noted, the $_ value is used by default.
evaluates to the value, 100.
This function returns the inverse tangent in radians. The returned value is -pi to +pi.
The cosine in radians is returned.
Returns a value of the exponent (e) to the power of the passed value.
Convert the value to an integer and truncate it if necessary.