bli_dotaxmyv2.c File Reference

(r)

Functions
void	bli_sdotaxmyv2 (int n, float *alpha, float *beta, float *x, int inc_x, float *u, int inc_u, float *rho, float *y, int inc_y, float *z, int inc_z)
void	bli_ddotaxmyv2 (int n, double *alpha, double *beta, double *x, int inc_x, double *u, int inc_u, double *rho, double *y, int inc_y, double *z, int inc_z)

---

Function Documentation

void bli_ddotaxmyv2	(	int	n,
		double *	alpha,
		double *	beta,
		double *	x,
		int	inc_x,
		double *	u,
		int	inc_u,
		double *	rho,
		double *	y,
		int	inc_y,
		double *	z,
		int	inc_z
	)

References bli_abort(), v2df_t::d, and v2df_t::v.

Referenced by FLA_Fused_Uhu_Yhu_Zhu_opd_var1().

{
    double*   restrict chi1;
    double*   restrict upsilon1;
    double*   restrict psi1;
    double*   restrict zeta1;
    double    rho_c;
    int       i;

    int       n_pre;
    int       n_run;
    int       n_left;

    v2df_t    a1v, b1v;
    v2df_t    rho1v;
    v2df_t    x1v, u1v, y1v, z1v;

    if ( inc_x != 1 ||
         inc_u != 1 ||
         inc_y != 1 ||
         inc_z != 1 ) bli_abort();

    n_pre = 0;
    if ( ( unsigned long ) z % 16 != 0 )
    {
        if ( ( unsigned long ) x % 16 == 0 ||
             ( unsigned long ) u % 16 == 0 ||
             ( unsigned long ) y % 16 == 0 ) bli_abort();

        n_pre = 1;
    }

    n_run       = ( n - n_pre ) / 2;
    n_left      = ( n - n_pre ) % 2;

    chi1     = x;
    upsilon1 = u;
    psi1     = y;
    zeta1    = z;

    rho_c   = 0.0;

    if ( n_pre == 1 )
    {
        double   alpha_c = *alpha;
        double   beta_c  = *beta;
        double   chi1_c    = *chi1;
        double   upsilon_c = *upsilon1;

        rho_c  += chi1_c * upsilon_c;
        *psi1  -= alpha_c * chi1_c;
        *zeta1 -= beta_c  * chi1_c;

        chi1     += inc_x;
        upsilon1 += inc_u;
        psi1     += inc_y;
        zeta1    += inc_z;
    }

    a1v.v = _mm_loaddup_pd( ( double* )alpha );
    b1v.v = _mm_loaddup_pd( ( double* )beta );

    rho1v.v = _mm_setzero_pd();

    for ( i = 0; i < n_run; ++i )
    {
        x1v.v = _mm_load_pd( ( double* )chi1 );
        u1v.v = _mm_load_pd( ( double* )upsilon1 );
        y1v.v = _mm_load_pd( ( double* )psi1 );
        z1v.v = _mm_load_pd( ( double* )zeta1 );

        rho1v.v += x1v.v * u1v.v;
        y1v.v   -= a1v.v * x1v.v;
        z1v.v   -= b1v.v * x1v.v;

        _mm_store_pd( ( double* )psi1,  y1v.v );
        _mm_store_pd( ( double* )zeta1, z1v.v );

        chi1     += 2;
        upsilon1 += 2;
        psi1     += 2;
        zeta1    += 2;
    }

    rho_c += rho1v.d[0] + rho1v.d[1];

    if ( n_left > 0 )
    {
        double   alpha_c = *alpha;
        double   beta_c  = *beta;

        for( i = 0; i < n_left; ++i )
        {
            double   chi1_c    = *chi1;
            double   upsilon_c = *upsilon1;

            rho_c  += chi1_c * upsilon_c;
            *psi1  -= alpha_c * chi1_c;
            *zeta1 -= beta_c  * chi1_c;

            chi1     += inc_x;
            upsilon1 += inc_u;
            psi1     += inc_y;
            zeta1    += inc_z;
        }
    }

    *rho = rho_c;
}

void bli_sdotaxmyv2	(	int	n,
		float *	alpha,
		float *	beta,
		float *	x,
		int	inc_x,
		float *	u,
		int	inc_u,
		float *	rho,
		float *	y,
		int	inc_y,
		float *	z,
		int	inc_z
	)

References bli_abort().

{
    bli_abort();
}