[ANN] high-precision mathematical library

[Luiz Henrique de Figueiredo <lhf@...>]

Following the recent (but silent) updates of my mathematical libraries for Lua,
I've written a high-precision mathematical library:
	http://www.tecgraf.puc-rio.br/~lhf/ftp/lua/#lqd

lqd uses 32-byte, quad-double numbers (approx. 64 decimal digits), but it
also supports 16-byte, double-double numbers (approx. 32 decimal digits).
(So, lqd is high-precision but not arbitrary-precision like lbc and lmapm.)
The functions available in lqd are listed at the end of this message.

lqd is based on the qd library available at
	http://crd.lbl.gov/~dhbailey/mpdist/
	
qd is licensed under the terms of the BSD license.

All feedback welcome. Enjoy.
--lhf

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qd library:
 __add(x,y) 		 atan2(y,x) 		 number(x) 
 __div(x,y) 		 atanh(x) 		 pi 
 __eq(x,y) 		 ceil(x) 		 rand() 
 __lt(x,y) 		 compare(x,y) 		 sin(x) 
 __mod(x,y) 		 cos(x) 		 sincos(x) 
 __mul(x,y) 		 cosh(x) 		 sincosh(x) 
 __pow(x,y) 		 debug(x) 		 sinh(x) 
 __sub(x,y) 		 digits([n]) 		 sqr(x) 
 __tostring(x) 		 div(x,y) 		 sqrt(x) 
 __unm(x) 		 exp(x) 		 sub(x,y) 
 abs(x) 		 floor(x) 		 tan(x) 
 acos(x) 		 ipow(x,n) 		 tanh(x) 
 acosh(x) 		 iroot(x,n) 		 tonumber(x) 
 add(x,y) 		 log(x) 		 tostring(x,[n]) 
 asin(x) 		 log10(x) 		 version 
 asinh(x) 		 mul(x,y) 
 atan(x) 		 neg(x) 

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