13 lines
430 B
C
13 lines
430 B
C
#include <limits.h>
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#include "abs.h"
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/*@
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requires 0 < n <= UINT_MAX;
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requires \valid_read(tab+(0..n-1));
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requires \forall integer i; 0 <= i < n ==> INT_MIN / 2 <= tab[i] <= INT_MAX/2;
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terminates \true;
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ensures \forall integer a,b; 0 <= a < b < n ==> \result >= abs(tab[a]-tab[b]);
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ensures \exists integer i,j; 0 < i < j < n ==> \result == abs(tab[i]-tab[j]);
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assigns \nothing;
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*/
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int max_dist(int *tab, unsigned int n);
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