Actually, the solution to avoid the -INF, +INF is to check for "is
finite?" using the
isfinite macro. From its man page:
The isfinite() macro shall determine whether its argument has a finite
value (zero, subnormal, or normal, and not infinite or NaN). First, an
argument represented in a format wider than its semantic type is con‐
verted to its semantic type. Then determination is based on the type of
the argument.
-dmg
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