bl1_conjmr.c File Reference

(r12600)

Functions
void	bl1_sconjmr (uplo1_t uplo, int m, int n, float *a, int a_rs, int a_cs)
void	bl1_dconjmr (uplo1_t uplo, int m, int n, double *a, int a_rs, int a_cs)
void	bl1_cconjmr (uplo1_t uplo, int m, int n, scomplex *a, int a_rs, int a_cs)
void	bl1_zconjmr (uplo1_t uplo, int m, int n, dcomplex *a, int a_rs, int a_cs)

---

Function Documentation

void bl1_cconjmr	(	uplo1_t	uplo,
		int	m,
		int	n,
		scomplex *	a,
		int	a_rs,
		int	a_cs
	)

References bl1_is_row_storage(), bl1_is_upper(), bl1_sm1(), bl1_sscal(), and bl1_zero_dim2().

Referenced by bl1_chemm(), bl1_ctrmm(), bl1_ctrsm(), and FLA_Conjugate_r().

{
    float   m1 = bl1_sm1();
    float*  a_conj;
    int     lda, inca;
    int     n_iter;
    int     n_elem_max;
    int     n_elem;
    int     j;

    // Return early if possible.
    if ( bl1_zero_dim2( m, n ) ) return;

    // We initialize for column-major.
    n_iter     = n;
    n_elem_max = m;
    lda        = a_cs;
    inca       = a_rs;

    // An optimization: if A is row-major, then let's access the matrix
    // by rows instead of by columns to increase spatial locality.
    if ( bl1_is_row_storage( a_rs, a_cs ) )
    {
        bl1_swap_ints( n_iter, n_elem_max );
        bl1_swap_ints( lda, inca );
        bl1_toggle_uplo( uplo );
    }

    if ( bl1_is_upper( uplo ) )
    {
        for ( j = 0; j < n_iter; ++j )
        {
            n_elem = bl1_min( j + 1, n_elem_max );
            a_conj = ( float* )( a + j*lda ) + 1;
    
            bl1_sscal( n_elem,
                       &m1,
                       a_conj, 2*inca );
        }
    }
    else // if ( bl1_is_lower( uplo ) )
    {
        for ( j = 0; j < n_iter; ++j )
        {
            n_elem = bl1_max( 0, n_elem_max - j );
            a_conj = ( float* )( a + j*lda + j*inca ) + 1;
    
            if ( n_elem <= 0 ) break;

            bl1_sscal( n_elem,
                       &m1,
                       a_conj, 2*inca );
        }
    }
}

void bl1_dconjmr	(	uplo1_t	uplo,
		int	m,
		int	n,
		double *	a,
		int	a_rs,
		int	a_cs
	)

{
    return;
}

void bl1_sconjmr	(	uplo1_t	uplo,
		int	m,
		int	n,
		float *	a,
		int	a_rs,
		int	a_cs
	)

{
    return;
}

void bl1_zconjmr	(	uplo1_t	uplo,
		int	m,
		int	n,
		dcomplex *	a,
		int	a_rs,
		int	a_cs
	)

References bl1_dm1(), bl1_dscal(), bl1_is_row_storage(), bl1_is_upper(), and bl1_zero_dim2().

Referenced by bl1_zhemm(), bl1_ztrmm(), bl1_ztrsm(), and FLA_Conjugate_r().

{
    double  m1 = bl1_dm1();
    double* a_conj;
    int     lda, inca;
    int     n_iter;
    int     n_elem_max;
    int     n_elem;
    int     j;

    // Return early if possible.
    if ( bl1_zero_dim2( m, n ) ) return;

    // We initialize for column-major.
    n_iter     = n;
    n_elem_max = m;
    lda        = a_cs;
    inca       = a_rs;

    // An optimization: if A is row-major, then let's access the matrix
    // by rows instead of by columns to increase spatial locality.
    if ( bl1_is_row_storage( a_rs, a_cs ) )
    {
        bl1_swap_ints( n_iter, n_elem_max );
        bl1_swap_ints( lda, inca );
        bl1_toggle_uplo( uplo );
    }

    if ( bl1_is_upper( uplo ) )
    {
        for ( j = 0; j < n_iter; ++j )
        {
            n_elem = bl1_min( j + 1, n_elem_max );
            a_conj = ( double* )( a + j*lda ) + 1;
    
            bl1_dscal( n_elem,
                       &m1,
                       a_conj, 2*inca );
        }
    }
    else // if ( bl1_is_lower( uplo ) )
    {
        for ( j = 0; j < n_iter; ++j )
        {
            n_elem = bl1_max( 0, n_elem_max - j );
            a_conj = ( double* )( a + j*lda + j*inca ) + 1;
    
            if ( n_elem <= 0 ) break;

            bl1_dscal( n_elem,
                       &m1,
                       a_conj, 2*inca );
        }
    }
}