GCL & float overflow

• Subject: GCL & float overflow
• From: Barton Willis
• Date: Mon, 4 May 2009 11:56:43 -0500

Correct me if I'm (once again) mistaken, but I think GCL has some problems 
with floating point 
overflow. With Clozure CL 1.3

 (%i3) safe_float(x) := block([y : errcatch(float(x))], if y = [] then 
bfloat(x) else first(y))$
 (%i4) safe_float(4.5b731);

 float: floating point overflow converting 4.5b731
 (%o4) 4.5b731

With GCL 2.6.8:

 (%i18) safe_float(4.5b731);
 (%o18) 1.3924557213221603e115 

Barton

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