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| author | Andrew Cagney <cagney@redhat.com> | 2003-09-15 21:28:49 +0000 |
|---|---|---|
| committer | Andrew Cagney <cagney@gcc.gnu.org> | 2003-09-15 21:28:49 +0000 |
| commit | a4cbdc57c8be340db5e10ba32c56c1114858daee (patch) | |
| tree | b72bb9e7cd2a18c3d9482e542b91a97a7d7a2534 /include | |
| parent | d3704c4668db2c8582f25f48b7b5e83aa50dc76f (diff) | |
| download | gcc-a4cbdc57c8be340db5e10ba32c56c1114858daee.zip gcc-a4cbdc57c8be340db5e10ba32c56c1114858daee.tar.gz gcc-a4cbdc57c8be340db5e10ba32c56c1114858daee.tar.bz2 | |
floatformat.h (struct floatformat): Make "exp_bias" signed.
2003-09-15 Andrew Cagney <cagney@redhat.com>
* floatformat.h (struct floatformat): Make "exp_bias" signed.
From-SVN: r71407
Diffstat (limited to 'include')
| -rw-r--r-- | include/ChangeLog | 4 | ||||
| -rw-r--r-- | include/floatformat.h | 8 |
2 files changed, 10 insertions, 2 deletions
diff --git a/include/ChangeLog b/include/ChangeLog index 2f29f64..037dee5 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,7 @@ +2003-09-15 Andrew Cagney <cagney@redhat.com> + + * floatformat.h (struct floatformat): Make "exp_bias" signed. + 2003-09-15 Daniel Jacobowitz <drow@mvista.com> * floatformat.h (floatformat_is_valid): Add prototype. 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. */ |