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author | Laszlo Ersek <lersek@redhat.com> | 2018-02-15 17:09:43 +0100 |
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committer | Star Zeng <star.zeng@intel.com> | 2018-07-06 17:26:15 +0800 |
commit | 108136f2637ce9376d00ce8f11326ae40297fee0 (patch) | |
tree | 4349d6cbb04e322a1034a76cfecc8cf4bd4a40ad /MdePkg/Library/SecPeiDxeTimerLibCpu | |
parent | b1bbc119f1b9e86dcbbb8d45669c2c6f5b6fab9e (diff) | |
download | edk2-108136f2637ce9376d00ce8f11326ae40297fee0.tar.gz edk2-108136f2637ce9376d00ce8f11326ae40297fee0.tar.bz2 edk2-108136f2637ce9376d00ce8f11326ae40297fee0.zip |
MdePkg/BaseSafeIntLib: clean up parentheses in MIN_INT64_MAGNITUDE
The definition of the MIN_INT64_MAGNITUDE macro is correct, but it's
harder to read than necessary: the sub-expression
(( (UINT64) - (MIN_INT64 + 1) ))
is doubly parenthesized. Reusing one pair of the outer parens, rewrite the
sub-expression (without change in meaning) so that the minus sign cannot
be mistaken for subtraction:
( (UINT64)(- (MIN_INT64 + 1)) )
The resultant macro definition matches the following expressions in
SafeInt64Mult():
> //
> // Avoid negating the most negative number.
> //
> UnsignedMultiplicand = ((UINT64)(- (Multiplicand + 1))) + 1;
and
> //
> // Avoid negating the most negative number.
> //
> UnsignedMultiplier = ((UINT64)(- (Multiplier + 1))) + 1;
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Sean Brogan <sean.brogan@microsoft.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Michael D Kinney <michael.d.kinney@intel.com>
(cherry picked from commit 8c33cc0ec926b17396fcd71686c727b991984d4a)
Diffstat (limited to 'MdePkg/Library/SecPeiDxeTimerLibCpu')
0 files changed, 0 insertions, 0 deletions