=============================================================================

	icalc - a complex-number expression parser

	by Martin W Scott

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	Revision History

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	Version 1.1
	-----------

	- Example script files modified. Now provided are:
		icalc.init, which has many useful functions (startup-file);
		trig.icalc, which contains less-used trig functions;
		stat.icalc, one-variable statistical analysis.
	  You are strongly recommended to look at these for tips on how
	  best to use icalc.

	- On startup, icalc will now read the file 's:icalc.init' if it
	  exists.

	- Special function multi() added, which evaluates all its arguments,
	  returning the last one as its value. See docs and example scripts
	  for applications. Also added is print() builtin, for use
	  with multi().

	- Special functions Sum(), Prod(), every() and vevery() now added.
	  The repeat construct has therefore been removed. (It was only
	  in there until I got around to adding this type of facility).

	- Expressions and function definitions may now be continued on
	  the next line by use of a backslash '\'.

	- Identifiers may begin with and contain underscores (and, as a
	  side-effect of the implementation, be composed entirely of
	  underscores).

	- Multi-parameter functions now added.

	- You can now declare functions that take no parameters, eg.
		func total() = sum1 + sum2

	- Listing of user functions improved: now shows parameter list;
	  However, I don't think it's worth writing out whole definition.

	- Method of setting precision has changed: now use function
	  prec(digits), which returns ans (last computed result). Initially
	  set to 8.

	- Added function int(z), which returns the real and imaginary parts
	  of z rounded to nearest integers; 0.5 rounds up.

	- Added functions ceil(z) and floor(z), which operate separately
	  on the real and imaginary parts of their argument, in a similar
	  manner to int(z).

	- Now has a prompt to avoid confusion.

	- [ Real-valued functions are no longer computed internally as such. ]

	- Removed debugging code accidentally left in with version 1.0.



	Version 1.0
	-----------

	- Initial release.