rotm.c

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#include "bench.h"

#undef ROTM

#ifdef DOUBLE
#define ROTM BLASFUNC(drotm)
#else
#define ROTM BLASFUNC(srotm)
#endif

int main(int argc, char *argv[])
{

    FLOAT *x, *y;
    // FLOAT result;
    blasint m, i;
    blasint inc_x = 1, inc_y = 1;
    FLOAT param[5] = {1, 2.0, 3.0, 4.0, 5.0};
    int loops = 1;
    int l;
    char *p;

    int from = 1;
    int to = 200;
    int step = 1;

    
    double time1, timeg;

    argc--;
    argv++;

    if (argc > 0) {
        from = atol(*argv);
        argc--;
        argv++;
    }
    if (argc > 0) {
        to = MAX(atol(*argv), from);
        argc--;
        argv++;
    }
    if (argc > 0) {
        step = atol(*argv);
        argc--;
        argv++;
    }

    if ((p = getenv("OPENBLAS_LOOPS")))
        loops = atoi(p);
    if ((p = getenv("OPENBLAS_INCX")))
        inc_x = atoi(p);
    if ((p = getenv("OPENBLAS_INCY")))
        inc_y = atoi(p);

    fprintf(
        stderr,
        "From : %3d  To : %3d Step = %3d Inc_x = %d Inc_y = %d Loops = %d\n",
        from, to, step, inc_x, inc_y, loops);

    if ((x = (FLOAT *)malloc(sizeof(FLOAT) * to * abs(inc_x) * COMPSIZE)) ==
        NULL) {
        fprintf(stderr, "Out of Memory!!\n");
        exit(1);
    }

    if ((y = (FLOAT *)malloc(sizeof(FLOAT) * to * abs(inc_y) * COMPSIZE)) ==
        NULL) {
        fprintf(stderr, "Out of Memory!!\n");
        exit(1);
    }

#ifdef __linux
    srandom(getpid());
#endif

    fprintf(stderr, "   SIZE       Flops\n");

    for (m = from; m <= to; m += step) {

        timeg = 0;

        fprintf(stderr, " %6d : ", (int)m);
        for (i = 0; i < m * COMPSIZE * abs(inc_x); i++) {
            x[i] = ((FLOAT)rand() / (FLOAT)RAND_MAX) - 0.5;
        }

        for (i = 0; i < m * COMPSIZE * abs(inc_y); i++) {
            y[i] = ((FLOAT)rand() / (FLOAT)RAND_MAX) - 0.5;
        }

        for (l = 0; l < loops; l++) {
            begin();

            ROTM(&m, x, &inc_x, y, &inc_y, param);

            end();

            time1 = getsec();

            timeg += time1;
        }

        timeg /= loops;

        fprintf(stderr, " %10.2f MFlops %10.6f sec\n",
                COMPSIZE * COMPSIZE * 6. * (double)m / timeg * 1.e-6, timeg);
    }

    return 0;
}