D.2.2.10 number_e
.................
Procedure from library general.lib (see general_lib).

Usage:
number_e(n); n integer

Return:
Euler number e=exp(1) up to n decimal digits (no rounding)

 - of type string if no basering of char 0 is defined

 - of type number if a basering of char 0 is defined

Display:
decimal format of e if printlevel > 0 (default:printlevel=0 )

Note:
procedure uses algorithm of A.H.J. Sale

Example:
LIB "general.lib";
number_e(30);"";
==> 2.71828182845904523536028747135
==> 
ring R = 0,t,lp;
number e = number_e(30);
e;
==> 13591409142295226176801437356763/5000000000000000000000000000000

<font size="-1">
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; User manual for <a href="http://www.singular.uni-kl.de/"><i>Singular</i></a> version 2-0-4, October 2002,
generated by <a href="http://www.gnu.org/software/texinfo/"><i>texi2html</i></a>.
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