|  |  7.5.14.0. isZeroNcfrac Procedure from libraryncfrac.lib(see  ncfrac_lib).
 
Example:Usage:
isZeroNcfrac(frac), ncfrac frac
Purpose:
checks if frac is zero
Return:
int, 1 if frac is zero, 0 otherwise
 |  | LIB "ncfrac.lib";
==> // ** redefining testNcfrac (LIB "ncfrac.lib";) ./examples/isZeroNcfrac.s\
   ing:1
==> // ** redefining testNcloc (    LIB "ncloc.lib";) ncfrac.lib::mod_init:11\
   3
ring Q = (0,q),(x,y,Qx,Qy),dp;
matrix C[4][4] = UpOneMatrix(4);
C[1,3] = q;
C[2,4] = q;
def ncQ = nc_algebra(C,0);
setring ncQ;
ncloc loc = intvec(2);
ncfrac frac = list([y^2+7*y+1,0,0,0], loc);
isZeroNcfrac(frac);
==> 1
frac.lnum = 42*y*Qy+7*Qx+3*x+7;
isZeroNcfrac(frac);
==> 0
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