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| author | David Monniaux <David.Monniaux@univ-grenoble-alpes.fr> | 2021-12-06 19:28:40 +0100 |
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| committer | David Monniaux <David.Monniaux@univ-grenoble-alpes.fr> | 2021-12-06 19:28:40 +0100 |
| commit | 9e62bc5ba6af27e47b7d3f22cef8c2dd24a8fc5e (patch) | |
| tree | 97042ad1a686c6eeaf0ae8ebba11b9cb2d1bf06c /kvx/ExtIEEE754.v | |
| parent | 6b62e98a0809a9ac22e64f82943473994e79bfaf (diff) | |
| download | compcert-kvx-9e62bc5ba6af27e47b7d3f22cef8c2dd24a8fc5e.tar.gz compcert-kvx-9e62bc5ba6af27e47b7d3f22cef8c2dd24a8fc5e.zip | |
Zdiv_ne
Diffstat (limited to 'kvx/ExtIEEE754.v')
| -rw-r--r-- | kvx/ExtIEEE754.v | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kvx/ExtIEEE754.v b/kvx/ExtIEEE754.v new file mode 100644 index 00000000..095fd0cc --- /dev/null +++ b/kvx/ExtIEEE754.v @@ -0,0 +1,12 @@ +Require Import Coq.ZArith.Zdiv. + +Open Scope Z. + +Definition Zdiv_ne (a b : Z) := + let q := Z.div a b in + let q1 := Z.succ q in + match Z.compare (a-b*q) (b*q1-a) with + | Lt => q + | Gt => q1 + | Eq => (if Z.even q then q else q1) + end. |