bl1_conjm.c File Reference

(r)

Functions
void	bl1_sconjm (int m, int n, float *a, int a_rs, int a_cs)
void	bl1_dconjm (int m, int n, double *a, int a_rs, int a_cs)
void	bl1_cconjm (int m, int n, scomplex *a, int a_rs, int a_cs)
void	bl1_zconjm (int m, int n, dcomplex *a, int a_rs, int a_cs)

Function Documentation

bl1_cconjm()

void bl1_cconjm	(	int	m,
		int	n,
		scomplex *	a,
		int	a_rs,
		int	a_cs
	)

{
    float   m1 = bl1_sm1();
    float*  a_conj;
    int     lda, inca;
    int     n_iter;
    int     n_elem;
    int     j;
 
    // Return early if possible.
    if ( bl1_zero_dim2( m, n ) ) return;
 
    // Handle cases where A is a vector to ensure that the underlying axpy
    // gets invoked only once.
    if ( bl1_is_vector( m, n ) )
    {
        // Initialize with values appropriate for a vector.
        n_iter = 1;
        n_elem = bl1_vector_dim( m, n );
        lda    = 1; // multiplied by zero when n_iter == 1; not needed.
        inca   = bl1_vector_inc( BLIS1_NO_TRANSPOSE, m, n, a_rs, a_cs );
    }
    else // matrix case
    {
        // Initialize with optimal values for column-major storage.
        n_iter = n;
        n_elem = 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 );
            bl1_swap_ints( lda, inca );
        }
    }
 
    for ( j = 0; j < n_iter; ++j )
    {
        a_conj = ( float* )( a + j*lda ) + 1;
 
        bl1_sscal( n_elem,
                   &m1,
                   a_conj, 2*inca );
    }
}

References bl1_is_row_storage(), bl1_is_vector(), bl1_sm1(), bl1_sscal(), bl1_vector_dim(), bl1_vector_inc(), bl1_zero_dim2(), and BLIS1_NO_TRANSPOSE.

Referenced by bl1_cgemm(), and FLA_Conjugate().

bl1_dconjm()

void bl1_dconjm	(	int	m,
		int	n,
		double *	a,
		int	a_rs,
		int	a_cs
	)

{
    return;
}

bl1_sconjm()

void bl1_sconjm	(	int	m,
		int	n,
		float *	a,
		int	a_rs,
		int	a_cs
	)

{
    return;
}

bl1_zconjm()

void bl1_zconjm	(	int	m,
		int	n,
		dcomplex *	a,
		int	a_rs,
		int	a_cs
	)

{
    double  m1 = bl1_dm1();
    double* a_conj;
    int     lda, inca;
    int     n_iter;
    int     n_elem;
    int     j;
 
    // Return early if possible.
    if ( bl1_zero_dim2( m, n ) ) return;
 
    // Handle cases where A is a vector to ensure that the underlying axpy
    // gets invoked only once.
    if ( bl1_is_vector( m, n ) )
    {
        // Initialize with values appropriate for a vector.
        n_iter = 1;
        n_elem = bl1_vector_dim( m, n );
        lda    = 1; // multiplied by zero when n_iter == 1; not needed.
        inca   = bl1_vector_inc( BLIS1_NO_TRANSPOSE, m, n, a_rs, a_cs );
    }
    else // matrix case
    {
        // Initialize with optimal values for column-major storage.
        n_iter = n;
        n_elem = 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 );
            bl1_swap_ints( lda, inca );
        }
    }
 
    for ( j = 0; j < n_iter; ++j )
    {
        a_conj = ( double* )( a + j*lda ) + 1;
 
        bl1_dscal( n_elem,
                   &m1,
                   a_conj, 2*inca );
    }
}

References bl1_dm1(), bl1_dscal(), bl1_is_row_storage(), bl1_is_vector(), bl1_vector_dim(), bl1_vector_inc(), bl1_zero_dim2(), and BLIS1_NO_TRANSPOSE.

Referenced by bl1_zgemm(), and FLA_Conjugate().