lib/Math/BigFloat.pm

443   return 1 if $x->{sign} eq '+' && $y->{sign} eq '-';	# does also 0 <=> -y
444   return -1 if $x->{sign} eq '-' && $y->{sign} eq '+';	# does also -x <=> 0
648   $y->{sign} =~ tr/+-/-+/;	# does nothing for NaN
649   $x->badd($y,$a,$p,$r);	# badd does not leave internal zeros
650   $y->{sign} =~ tr/+-/-+/;	# refix $y (does nothing for NaN)
686   $x->badd($self->bone(),@r);			# badd() does round
722   $x->badd($self->bone('-'),@r);		# does round
1088   # does not modify arguments, but returns new object
1100   # does not modify arguments, but returns new object
1153   _e_add($x,$y,$xs,$ys);		# call add (does subtract now)
1689   # steps of 10. The length of $x does not count, since an even or odd number
2766 Please note that ':constant' does not affect integer constants, nor binary
2793 Please note that Math::BigFloat does B<not> use the denoted library itself,