From 108136f2637ce9376d00ce8f11326ae40297fee0 Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Thu, 15 Feb 2018 17:09:43 +0100 Subject: 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 Cc: Liming Gao Cc: Michael D Kinney Cc: Sean Brogan Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek Reviewed-by: Ard Biesheuvel Tested-by: Michael D Kinney (cherry picked from commit 8c33cc0ec926b17396fcd71686c727b991984d4a) --- MdePkg/Library/BaseSafeIntLib/SafeIntLib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'MdePkg') diff --git a/MdePkg/Library/BaseSafeIntLib/SafeIntLib.c b/MdePkg/Library/BaseSafeIntLib/SafeIntLib.c index 56d97cf656..de91ffeca2 100644 --- a/MdePkg/Library/BaseSafeIntLib/SafeIntLib.c +++ b/MdePkg/Library/BaseSafeIntLib/SafeIntLib.c @@ -33,7 +33,7 @@ // // Magnitude of MIN_INT64 as expressed by a UINT64 number. // -#define MIN_INT64_MAGNITUDE ((((UINT64) - (MIN_INT64 + 1))) + 1) +#define MIN_INT64_MAGNITUDE (((UINT64)(- (MIN_INT64 + 1))) + 1) // // Conversion functions -- cgit v1.2.3