83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/*
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* Copyright (C) 2009, 2012 Thomas Preud'homme <thomas.preud-homme@lip6.fr>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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static int *mat, *vect;
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static int li;
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static int n, m; /* Size of the matrice: n lines, m columns */
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static int *mat_cell_ptr;
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int init_calc(int size)
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{
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int i;
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n = size;
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m = size;
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srand(42);
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mat = (int *) malloc(n * m * sizeof(int));
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if (mat == NULL)
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{
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fprintf(stderr, "calc_mat: Unable to allocate memory for matrice calculation\n");
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return -1;
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}
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vect = (int *) malloc(m * sizeof(int));
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if (vect == NULL)
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{
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free(mat);
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fprintf(stderr, "calc_mat: Unable to allocate memory for matrice calculation\n");
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return -1;
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}
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for (i = 0; i < n * m; i++)
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mat[i] = rand();
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for (i = 0; i < m; i++)
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vect[i] = rand();
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li = 0;
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return 0;
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}
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void **do_calc(void)
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{
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int co, p = 0;
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for (co = 0; co < m; co++)
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p += mat[li * m + co] * vect[li];
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mat[li * m] = p;
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if (unlikely(++li >= n))
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li = 0;
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mat_cell_ptr = &mat[li * m];
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return (void **) &mat_cell_ptr;
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}
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int end_calc(void)
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{
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free(mat);
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free(vect);
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return 0;
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}
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