tree dca09393c7db4376d8f6a470dbbf0e857060adfa
parent 2df2a97a20df22f598810b88409eb6107d23e7e1
author Rich Felker <dalias@aerifal.cx> 1335032050 -0400
committer Rich Felker <dalias@aerifal.cx> 1335032050 -0400

make floatscan correctly set errno for overflow/underflow

care is taken that the setting of errno correctly reflects underflow
condition. scanning exact denormal values does not result in ERANGE,
nor does scanning values (such as the usual string definition of
FLT_MIN) which are actually less than the smallest normal number but
which round to a normal result.

only the decimal case is handled so far; hex float require a separate
fix to come later.