OpenBLAS/benchmark/her2.c

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#include "bench.h"

#undef HER2

#ifdef DOUBLE
#define HER2   BLASFUNC(zher2)
#else
#define HER2   BLASFUNC(cher2)
#endif

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

    FLOAT *a, *x, *y;
    FLOAT alpha[] = {1.0, 1.0};
    blasint inc = 1;
    char *p;

    char uplo='U';
    char trans='N';

    if ((p = getenv("OPENBLAS_UPLO"))) uplo=*p;
    if ((p = getenv("OPENBLAS_TRANS"))) trans=*p;

    blasint m, i, j;

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

    double time1;

    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++;}

    fprintf(stderr, "From : %3d  To : %3d Step = %3d Uplo = %c Trans = %c\n", from, to, step,uplo,trans);


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

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

    if (( y = (FLOAT *)malloc(sizeof(FLOAT) * to * 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)
    {
        fprintf(stderr, " %6d : ", (int)m);

        for(j = 0; j < m; j++){
            for(i = 0; i < m * COMPSIZE; i++){
                a[(long)i + (long)j * (long)m * COMPSIZE] = ((FLOAT) rand() / (FLOAT) RAND_MAX) - 0.5;
            }
            x[ (long)j * COMPSIZE] = ((FLOAT) rand() / (FLOAT) RAND_MAX) - 0.5;
            y[ (long)j * COMPSIZE] = ((FLOAT) rand() / (FLOAT) RAND_MAX) - 0.5;
        }

        begin();

        HER2 (&uplo, &m, alpha, x, &inc, y, &inc, a, &m );

        end();

        time1 = getsec();

        fprintf(stderr,
                " %10.2f MFlops\n",
                COMPSIZE * COMPSIZE * 2. * (double)m * (double)m / time1 * 1.e-6);

    }

    return 0;
}