• David Friedman <d3rdclsmail_a_ _t_earthlink_d_._t_net> Jan 01 2005

David Friedman <d3rdclsmail_a_ _t_earthlink_d_._t_net> writes:

The special floating point comparisons do not detect the "unordered" 
case when the imaginary components are not NAN, but one or both of the 
real components is NAN.

Also, I have a specification question: Does D define an ordering for 
complex numbers?  If not, should using the other relational operators be 
an error?

int main() {
   cdouble a = double.nan + 3i;
   cdouble b = double.nan + 4i;

   assert( ! (a <> b) );
   assert( ! (a <>= b) );
   assert( a !<>= b );
   assert( a !<> b );

   return 0;
}

David