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math: Update ilog2_compile_time_const_u32 to wrap n with () 

This bug was found when passing a value along with '- 1' to the macro.

Signed-off-by: Yuval Peress <peress@google.com>
This commit is contained in:
Yuval Peress 2023-04-27 10:59:02 -06:00 committed by Carles Cufí
parent d15f8e6337
commit a341a71bd7
1 changed files with 31 additions and 31 deletions
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62
include/zephyr/math/ilog2.h
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@ -38,37 +38,37 @@
*/
#define ilog2_compile_time_const_u32(n) \
( \
(n < 2) ? 0 : \
((n & BIT(31)) == BIT(31)) ? 31 : \
((n & BIT(30)) == BIT(30)) ? 30 : \
((n & BIT(29)) == BIT(29)) ? 29 : \
((n & BIT(28)) == BIT(28)) ? 28 : \
((n & BIT(27)) == BIT(27)) ? 27 : \
((n & BIT(26)) == BIT(26)) ? 26 : \
((n & BIT(25)) == BIT(25)) ? 25 : \
((n & BIT(24)) == BIT(24)) ? 24 : \
((n & BIT(23)) == BIT(23)) ? 23 : \
((n & BIT(22)) == BIT(22)) ? 22 : \
((n & BIT(21)) == BIT(21)) ? 21 : \
((n & BIT(20)) == BIT(20)) ? 20 : \
((n & BIT(19)) == BIT(19)) ? 19 : \
((n & BIT(18)) == BIT(18)) ? 18 : \
((n & BIT(17)) == BIT(17)) ? 17 : \
((n & BIT(16)) == BIT(16)) ? 16 : \
((n & BIT(15)) == BIT(15)) ? 15 : \
((n & BIT(14)) == BIT(14)) ? 14 : \
((n & BIT(13)) == BIT(13)) ? 13 : \
((n & BIT(12)) == BIT(12)) ? 12 : \
((n & BIT(11)) == BIT(11)) ? 11 : \
((n & BIT(10)) == BIT(10)) ? 10 : \
((n & BIT(9)) == BIT(9)) ? 9 : \
((n & BIT(8)) == BIT(8)) ? 8 : \
((n & BIT(7)) == BIT(7)) ? 7 : \
((n & BIT(6)) == BIT(6)) ? 6 : \
((n & BIT(5)) == BIT(5)) ? 5 : \
((n & BIT(4)) == BIT(4)) ? 4 : \
((n & BIT(3)) == BIT(3)) ? 3 : \
((n & BIT(2)) == BIT(2)) ? 2 : \
((n) < 2) ? 0 : \
(((n) & BIT(31)) == BIT(31)) ? 31 : \
(((n) & BIT(30)) == BIT(30)) ? 30 : \
(((n) & BIT(29)) == BIT(29)) ? 29 : \
(((n) & BIT(28)) == BIT(28)) ? 28 : \
(((n) & BIT(27)) == BIT(27)) ? 27 : \
(((n) & BIT(26)) == BIT(26)) ? 26 : \
(((n) & BIT(25)) == BIT(25)) ? 25 : \
(((n) & BIT(24)) == BIT(24)) ? 24 : \
(((n) & BIT(23)) == BIT(23)) ? 23 : \
(((n) & BIT(22)) == BIT(22)) ? 22 : \
(((n) & BIT(21)) == BIT(21)) ? 21 : \
(((n) & BIT(20)) == BIT(20)) ? 20 : \
(((n) & BIT(19)) == BIT(19)) ? 19 : \
(((n) & BIT(18)) == BIT(18)) ? 18 : \
(((n) & BIT(17)) == BIT(17)) ? 17 : \
(((n) & BIT(16)) == BIT(16)) ? 16 : \
(((n) & BIT(15)) == BIT(15)) ? 15 : \
(((n) & BIT(14)) == BIT(14)) ? 14 : \
(((n) & BIT(13)) == BIT(13)) ? 13 : \
(((n) & BIT(12)) == BIT(12)) ? 12 : \
(((n) & BIT(11)) == BIT(11)) ? 11 : \
(((n) & BIT(10)) == BIT(10)) ? 10 : \
(((n) & BIT(9)) == BIT(9)) ? 9 : \
(((n) & BIT(8)) == BIT(8)) ? 8 : \
(((n) & BIT(7)) == BIT(7)) ? 7 : \
(((n) & BIT(6)) == BIT(6)) ? 6 : \
(((n) & BIT(5)) == BIT(5)) ? 5 : \
(((n) & BIT(4)) == BIT(4)) ? 4 : \
(((n) & BIT(3)) == BIT(3)) ? 3 : \
(((n) & BIT(2)) == BIT(2)) ? 2 : \
1 \
)