LIB "tst.lib";
tst_init();

// missing operations with reals/bigints:

ring r10 = (real,10,20),x,dp;
 1/0;
0/0;
impart(0);
repart(0);

ring r = real,x,dp;
 1/0;
0/0;
impart(0);
repart(0);
ring r11 = (complex,i),x,dp;
 1/0;
0/0;
impart(0);
repart(0);

bigint M = 6;
 -M;
0-M;      // Nur als Subtraktion
-1*M;     // oder als Multilpikation moeglich
int m = 6;  // fuer int OK
-m;

tst_status(1);$