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Diffstat (limited to 'src/Util/ZUtil/Definitions.v')
| -rw-r--r-- | src/Util/ZUtil/Definitions.v | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/Util/ZUtil/Definitions.v b/src/Util/ZUtil/Definitions.v index 4ef6b5403..8fe5772f5 100644 --- a/src/Util/ZUtil/Definitions.v +++ b/src/Util/ZUtil/Definitions.v @@ -85,6 +85,7 @@ Module Z. then mul_split_at_bitwidth (Z.log2 s) x y else ((x * y) mod s, (x * y) / s). + (** if positive, round up to 2^k-1 (0b11111....); if negative, round down to -2^k (0b...111000000...) *) Definition round_lor_land_bound (x : Z) : Z := if (0 <=? x)%Z then 2^(Z.log2_up (x+1))-1 |