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5.1.5 char

Syntax:
char ( ring_name )
Type:
int
Purpose:
returns the characteristic of the coefficient field of a ring.
Example:
 
  ring r=32003,(x,y),dp;
  char(r);
==> 32003
  ring s=0,(x,y),dp;
  char(s);
==> 0
  ring ra=(7,a),(x,y),dp;
  minpoly=a^3+a+1;
  char(ra);
==> 7
  ring rp=(49,a),(x,y),dp;
  char(rp);
==> 7
  ring rr=real,x,dp;
  char(rr);
==> 0
See charstr; ring.

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