coerce and exact operators problem

[Tony Pedley]

Excuse me for my stupidity but could anyone explain why the coerce and exact operators do not work
as advertised....

% Surely one must match......

match(X) ->
    io:format("when X is ~p\nX==0 results in ~p\nX=:=0 results in ~p\n",[X,X==0,X=:=0]),
    if
       X == 0 ->
           coerce_match;
       X =:= 0 ->
           exact_match;
       true  ->
           no_match
end.

------------------------------>

41> tmp:match(0.0).

when X is 0.00000e+0,
X==0 results in true
X=:=0 results in false
no_match



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Tony Pedley             mailto:tonyp@REDACTED
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