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Going forward, but gently...

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This commit is contained in:
Yorick Barbanneau 2023-05-05 01:48:36 +02:00
parent 4a30965654
commit 97a81f159a
4 changed files with 36 additions and 8 deletions
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10
content/conception_formelle/99-DM_framac/code/abs.h
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@ -6,16 +6,20 @@
/*@ logic integer abs(integer n) = 0<n?n:-n;*/
/*@
requires INT_MIN <= n;
requires INT_MIN < n < INT_MAX;
terminates \true;
ensures \result == abs(n);
assigns \nothing;
*/
int abs(int n);
/*@
requires INT_MIN <= n * (int)((int)n % 2 + ((int)n +1)%2) <= INT_MAX;
requires INT_MIN < n < INT_MAX;
requires INT_MIN <= n * (int)((int)n % 2 + ((int)n + 1)%2) <= INT_MAX;
terminates \true;
ensures \result == abs(n);*/
ensures \result == abs(n);
assigns \nothing;
*/
int abs2(int n);
#endif