main
test-branch
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Last change
on this file since beab7f2 was ea777aa, checked in by Alex Wilton <awilton@…>, 3 years ago |
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Moved examples, include, build_default.properties, common.xml, and README out from dev.civl.com into the root of the repo.
git-svn-id: svn://vsl.cis.udel.edu/civl/trunk@5704 fb995dde-84ed-4084-dfe6-e5aef3e2452c
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File size:
720 bytes
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| 1 | #include<mpi.h>
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| 2 | #include<civlc.cvh>
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| 3 |
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| 4 | #pragma CIVL ACSL
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| 5 | #define DATA_LIMIT 1024
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| 6 |
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| 7 | int nxl;
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| 8 | double * u, * u_new, k;
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| 9 |
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| 10 |
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| 11 | /*@ requires \valid(u + (0 .. (nxl + 1)));
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| 12 | @ requires \valid(u_new + (0 .. (nxl + 1)));
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| 13 | @ requires k > 0 && nxl > 0;
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| 14 | @ assigns u[1 .. nxl];
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| 15 | @ ensures \forall int i; 0< i && i <= nxl
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| 16 | @ ==>
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| 17 | @ u[i] == \old(u[i] + k*(u[i+1] + u[i-1] - 2*u[i])) + 1;
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| 18 | @*/
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| 19 | void update() {
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| 20 | /*@ loop invariant 1 <= i && i <= nxl + 1;
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| 21 | @ loop invariant \forall int j; 1 <= j && j < i ==>
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| 22 | @ u_new[j] == u[j] + k*(u[j+1] + u[j-1] - 2*u[j]);
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| 23 | @*/
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| 24 | for (int i = 1; i <= nxl; i++)
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| 25 | u_new[i] = u[i] + k*(u[i+1] + u[i-1] - 2*u[i]) + 1;
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| 26 |
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| 27 | double * tmp = u_new; u_new=u; u=tmp;
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| 28 | }
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