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authorAndrew Cagney <cagney@redhat.com>2003-09-15 21:28:56 +0000
committerAndrew Cagney <cagney@redhat.com>2003-09-15 21:28:56 +0000
commita58f15343cabf4a90ff8eded8f802a5ba2f5331b (patch)
tree172d312ea1cf5a6c44985e7f7cd31575f37011c2 /include/floatformat.h
parentac79b88b814c4ad3ecdf9077859fe83e7400b8b8 (diff)
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2003-09-15 Andrew Cagney <cagney@redhat.com>
* floatformat.h (struct floatformat): Make "exp_bias" signed.
Diffstat (limited to 'include/floatformat.h')
-rw-r--r--include/floatformat.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/include/floatformat.h b/include/floatformat.h
index feb3260..1d08fd6 100644
--- a/include/floatformat.h
+++ b/include/floatformat.h
@@ -61,8 +61,12 @@ struct floatformat
unsigned int exp_start;
unsigned int exp_len;
- /* Amount added to "true" exponent. 0x3fff for many IEEE extendeds. */
- unsigned int exp_bias;
+ /* Bias added to a "true" exponent to form the biased exponent. It
+ is intentionally signed as, otherwize, -exp_bias can turn into a
+ very large number (e.g., given the exp_bias of 0x3fff and a 64
+ bit long, the equation (long)(1 - exp_bias) evaluates to
+ 4294950914) instead of -16382). */
+ int exp_bias;
/* Exponent value which indicates NaN. This is the actual value stored in
the float, not adjusted by the exp_bias. This usually consists of all
one bits. */