rem: setfval(nfloc, (Awkfloat) n);
add: (void) setfval(nfloc, (Awkfloat) n);
context: newfld(n)	/* add field n (after end) */{	if (n >= MAXFLD)		ERROR "creating too many fields", record FATAL;	cleanfld(maxfld, n);	maxfld = n;	setfval(nfloc, (Awkfloat) n);}