bl1_syr2.c File Reference

(r12600)

Functions
void	bl1_ssyr2 (uplo1_t uplo, int m, float *alpha, float *x, int incx, float *y, int incy, float *a, int a_rs, int a_cs)
void	bl1_dsyr2 (uplo1_t uplo, int m, double *alpha, double *x, int incx, double *y, int incy, double *a, int a_rs, int a_cs)
void	bl1_csyr2 (uplo1_t uplo, int m, scomplex *alpha, scomplex *x, int incx, scomplex *y, int incy, scomplex *a, int a_rs, int a_cs)
void	bl1_zsyr2 (uplo1_t uplo, int m, dcomplex *alpha, dcomplex *x, int incx, dcomplex *y, int incy, dcomplex *a, int a_rs, int a_cs)
void	bl1_ssyr2_blas (uplo1_t uplo, int m, float *alpha, float *x, int incx, float *y, int incy, float *a, int lda)
void	bl1_dsyr2_blas (uplo1_t uplo, int m, double *alpha, double *x, int incx, double *y, int incy, double *a, int lda)
void	bl1_csyr2_blas (uplo1_t uplo, int m, scomplex *alpha, scomplex *x, int incx, scomplex *y, int incy, scomplex *a, int lda)
void	bl1_zsyr2_blas (uplo1_t uplo, int m, dcomplex *alpha, dcomplex *x, int incx, dcomplex *y, int incy, dcomplex *a, int lda)

---

Function Documentation

void bl1_csyr2	(	uplo1_t	uplo,
		int	m,
		scomplex *	alpha,
		scomplex *	x,
		int	incx,
		scomplex *	y,
		int	incy,
		scomplex *	a,
		int	a_rs,
		int	a_cs
	)

References bl1_ccreate_contigmr(), bl1_cfree_saved_contigm(), bl1_csyr2_blas(), bl1_is_row_storage(), and bl1_zero_dim1().

Referenced by FLA_Syr2_external().

{
    int       m_save    = m;
    scomplex* a_save    = a;
    int       a_rs_save = a_rs;
    int       a_cs_save = a_cs;
    int       lda, inca;

    // Return early if possible.
    if ( bl1_zero_dim1( m ) ) return;

    // If necessary, allocate, initialize, and use a temporary contiguous
    // copy of the matrix rather than the original matrix.
    bl1_ccreate_contigmr( uplo,
                          m,
                          m,
                          a_save, a_rs_save, a_cs_save,
                          &a,     &a_rs,     &a_cs );

    // Initialize with values assuming column-major storage.
    lda  = a_cs;
    inca = a_rs;

    // If A is a row-major matrix, then we can use the underlying column-major
    // BLAS implementation by fiddling with the parameters.
    if ( bl1_is_row_storage( a_rs, a_cs ) )
    {
        bl1_swap_ints( lda, inca );
        bl1_toggle_uplo( uplo );
    }

    bl1_csyr2_blas( uplo,
                    m,
                    alpha,
                    x, incx,
                    y, incy,
                    a, lda );

    // Free the temporary contiguous matrix.
    bl1_cfree_saved_contigm( m_save,
                             m_save,
                             a_save, a_rs_save, a_cs_save,
                             &a,     &a_rs,     &a_cs );
}

void bl1_csyr2_blas	(	uplo1_t	uplo,
		int	m,
		scomplex *	alpha,
		scomplex *	x,
		int	incx,
		scomplex *	y,
		int	incy,
		scomplex *	a,
		int	lda
	)

References bl1_callocv(), bl1_ccopyv(), bl1_cfree(), bl1_param_map_to_netlib_trans(), bl1_param_map_to_netlib_uplo(), BLIS1_NO_CONJUGATE, BLIS1_NO_TRANSPOSE, cblas_csyr2k(), CblasColMajor, F77_csyr2k(), scomplex::imag, and scomplex::real.

Referenced by bl1_csyr2().

{
    scomplex* x_copy;
    scomplex* y_copy;
    scomplex  beta;
    int       k   = 1;
    int       ldx = m;
    int       ldy = m;

#ifdef BLIS1_ENABLE_CBLAS_INTERFACES
    enum CBLAS_ORDER     cblas_order = CblasColMajor;
    enum CBLAS_UPLO      cblas_uplo;
    enum CBLAS_TRANSPOSE cblas_trans;

    bl1_param_map_to_netlib_uplo( uplo, &cblas_uplo );
    bl1_param_map_to_netlib_trans( BLIS1_NO_TRANSPOSE, &cblas_trans );

    x_copy = bl1_callocv( m );
    y_copy = bl1_callocv( m );

    bl1_ccopyv( BLIS1_NO_CONJUGATE,
                m,
                x,      incx,
                x_copy, 1 );

    bl1_ccopyv( BLIS1_NO_CONJUGATE,
                m,
                y,      incy,
                y_copy, 1 );

    beta.real = 1.0;
    beta.imag = 0.0;

    cblas_csyr2k( cblas_order,
                  cblas_uplo,
                  cblas_trans,
                  m,
                  k,
                  alpha,
                  x_copy, ldx,
                  y_copy, ldy,
                  &beta,
                  a,      lda );

    bl1_cfree( x_copy );
    bl1_cfree( y_copy );
#else
    char blas_uplo;
    char blas_trans;

    bl1_param_map_to_netlib_uplo( uplo, &blas_uplo );
    bl1_param_map_to_netlib_trans( BLIS1_NO_TRANSPOSE, &blas_trans );

    x_copy = bl1_callocv( m );
    y_copy = bl1_callocv( m );

    bl1_ccopyv( BLIS1_NO_CONJUGATE,
                m,
                x,      incx,
                x_copy, 1 );

    bl1_ccopyv( BLIS1_NO_CONJUGATE,
                m,
                y,      incy,
                y_copy, 1 );

    beta.real = 1.0;
    beta.imag = 0.0;

    F77_csyr2k ( &blas_uplo,
                 &blas_trans,
                 &m,
                 &k,
                 alpha,
                 x_copy, &ldx,
                 y_copy, &ldy,
                 &beta,
                 a,      &lda );

    bl1_cfree( x_copy );
    bl1_cfree( y_copy );
#endif
}

void bl1_dsyr2	(	uplo1_t	uplo,
		int	m,
		double *	alpha,
		double *	x,
		int	incx,
		double *	y,
		int	incy,
		double *	a,
		int	a_rs,
		int	a_cs
	)

References bl1_dcreate_contigmr(), bl1_dfree_saved_contigm(), bl1_dsyr2_blas(), bl1_is_row_storage(), and bl1_zero_dim1().

Referenced by bl1_dher2(), FLA_Her2_external(), FLA_Her2c_external(), FLA_Syr2_external(), FLA_Tridiag_UT_l_step_ofd_var2(), FLA_Tridiag_UT_l_step_opd_var1(), and FLA_Tridiag_UT_l_step_opd_var2().

{
    int       m_save    = m;
    double*   a_save    = a;
    int       a_rs_save = a_rs;
    int       a_cs_save = a_cs;
    int       lda, inca;

    // Return early if possible.
    if ( bl1_zero_dim1( m ) ) return;

    // If necessary, allocate, initialize, and use a temporary contiguous
    // copy of the matrix rather than the original matrix.
    bl1_dcreate_contigmr( uplo,
                          m,
                          m,
                          a_save, a_rs_save, a_cs_save,
                          &a,     &a_rs,     &a_cs );

    // Initialize with values assuming column-major storage.
    lda  = a_cs;
    inca = a_rs;

    // If A is a row-major matrix, then we can use the underlying column-major
    // BLAS implementation by fiddling with the parameters.
    if ( bl1_is_row_storage( a_rs, a_cs ) )
    {
        bl1_swap_ints( lda, inca );
        bl1_toggle_uplo( uplo );
    }

    bl1_dsyr2_blas( uplo,
                    m,
                    alpha,
                    x, incx,
                    y, incy,
                    a, lda );

    // Free the temporary contiguous matrix.
    bl1_dfree_saved_contigm( m_save,
                             m_save,
                             a_save, a_rs_save, a_cs_save,
                             &a,     &a_rs,     &a_cs );
}

void bl1_dsyr2_blas	(	uplo1_t	uplo,
		int	m,
		double *	alpha,
		double *	x,
		int	incx,
		double *	y,
		int	incy,
		double *	a,
		int	lda
	)

References bl1_param_map_to_netlib_uplo(), cblas_dsyr2(), CblasColMajor, and F77_dsyr2().

Referenced by bl1_dsyr2().

{
#ifdef BLIS1_ENABLE_CBLAS_INTERFACES
    enum CBLAS_ORDER cblas_order = CblasColMajor;
    enum CBLAS_UPLO  cblas_uplo;

    bl1_param_map_to_netlib_uplo( uplo, &cblas_uplo );

    cblas_dsyr2( cblas_order,
                 cblas_uplo,
                 m,
                 *alpha,
                 x, incx,
                 y, incy,
                 a, lda );
#else
    char blas_uplo;

    bl1_param_map_to_netlib_uplo( uplo, &blas_uplo );

    F77_dsyr2( &blas_uplo,
               &m,
               alpha,
               x, &incx,
               y, &incy,
               a, &lda );
#endif
}

void bl1_ssyr2	(	uplo1_t	uplo,
		int	m,
		float *	alpha,
		float *	x,
		int	incx,
		float *	y,
		int	incy,
		float *	a,
		int	a_rs,
		int	a_cs
	)

References bl1_is_row_storage(), bl1_screate_contigmr(), bl1_sfree_saved_contigm(), bl1_ssyr2_blas(), and bl1_zero_dim1().

Referenced by bl1_sher2(), FLA_Her2_external(), FLA_Her2c_external(), FLA_Syr2_external(), FLA_Tridiag_UT_l_step_ofs_var2(), FLA_Tridiag_UT_l_step_ops_var1(), and FLA_Tridiag_UT_l_step_ops_var2().

{
    int       m_save    = m;
    float*    a_save    = a;
    int       a_rs_save = a_rs;
    int       a_cs_save = a_cs;
    int       lda, inca;

    // Return early if possible.
    if ( bl1_zero_dim1( m ) ) return;

    // If necessary, allocate, initialize, and use a temporary contiguous
    // copy of the matrix rather than the original matrix.
    bl1_screate_contigmr( uplo,
                          m,
                          m,
                          a_save, a_rs_save, a_cs_save,
                          &a,     &a_rs,     &a_cs );

    // Initialize with values assuming column-major storage.
    lda  = a_cs;
    inca = a_rs;

    // If A is a row-major matrix, then we can use the underlying column-major
    // BLAS implementation by fiddling with the parameters.
    if ( bl1_is_row_storage( a_rs, a_cs ) )
    {
        bl1_swap_ints( lda, inca );
        bl1_toggle_uplo( uplo );
    }

    bl1_ssyr2_blas( uplo,
                    m,
                    alpha,
                    x, incx,
                    y, incy,
                    a, lda );

    // Free the temporary contiguous matrix.
    bl1_sfree_saved_contigm( m_save,
                             m_save,
                             a_save, a_rs_save, a_cs_save,
                             &a,     &a_rs,     &a_cs );
}

void bl1_ssyr2_blas	(	uplo1_t	uplo,
		int	m,
		float *	alpha,
		float *	x,
		int	incx,
		float *	y,
		int	incy,
		float *	a,
		int	lda
	)

References bl1_param_map_to_netlib_uplo(), cblas_ssyr2(), CblasColMajor, and F77_ssyr2().

Referenced by bl1_ssyr2().

{
#ifdef BLIS1_ENABLE_CBLAS_INTERFACES
    enum CBLAS_ORDER cblas_order = CblasColMajor;
    enum CBLAS_UPLO  cblas_uplo;

    bl1_param_map_to_netlib_uplo( uplo, &cblas_uplo );

    cblas_ssyr2( cblas_order,
                 cblas_uplo,
                 m,
                 *alpha,
                 x, incx,
                 y, incy,
                 a, lda );
#else
    char blas_uplo;

    bl1_param_map_to_netlib_uplo( uplo, &blas_uplo );

    F77_ssyr2( &blas_uplo,
               &m,
               alpha,
               x, &incx,
               y, &incy,
               a, &lda );
#endif
}

void bl1_zsyr2	(	uplo1_t	uplo,
		int	m,
		dcomplex *	alpha,
		dcomplex *	x,
		int	incx,
		dcomplex *	y,
		int	incy,
		dcomplex *	a,
		int	a_rs,
		int	a_cs
	)

References bl1_is_row_storage(), bl1_zcreate_contigmr(), bl1_zero_dim1(), bl1_zfree_saved_contigm(), and bl1_zsyr2_blas().

Referenced by FLA_Syr2_external().

{
    int       m_save    = m;
    dcomplex* a_save    = a;
    int       a_rs_save = a_rs;
    int       a_cs_save = a_cs;
    int       lda, inca;

    // Return early if possible.
    if ( bl1_zero_dim1( m ) ) return;

    // If necessary, allocate, initialize, and use a temporary contiguous
    // copy of the matrix rather than the original matrix.
    bl1_zcreate_contigmr( uplo,
                          m,
                          m,
                          a_save, a_rs_save, a_cs_save,
                          &a,     &a_rs,     &a_cs );

    // Initialize with values assuming column-major storage.
    lda  = a_cs;
    inca = a_rs;

    // If A is a row-major matrix, then we can use the underlying column-major
    // BLAS implementation by fiddling with the parameters.
    if ( bl1_is_row_storage( a_rs, a_cs ) )
    {
        bl1_swap_ints( lda, inca );
        bl1_toggle_uplo( uplo );
    }

    bl1_zsyr2_blas( uplo,
                    m,
                    alpha,
                    x, incx,
                    y, incy,
                    a, lda );

    // Free the temporary contiguous matrix.
    bl1_zfree_saved_contigm( m_save,
                             m_save,
                             a_save, a_rs_save, a_cs_save,
                             &a,     &a_rs,     &a_cs );
}

void bl1_zsyr2_blas	(	uplo1_t	uplo,
		int	m,
		dcomplex *	alpha,
		dcomplex *	x,
		int	incx,
		dcomplex *	y,
		int	incy,
		dcomplex *	a,
		int	lda
	)

References bl1_param_map_to_netlib_trans(), bl1_param_map_to_netlib_uplo(), bl1_zallocv(), bl1_zcopyv(), bl1_zfree(), BLIS1_NO_CONJUGATE, BLIS1_NO_TRANSPOSE, cblas_zsyr2k(), CblasColMajor, F77_zsyr2k(), dcomplex::imag, and dcomplex::real.

Referenced by bl1_zsyr2().

{
    dcomplex* x_copy;
    dcomplex* y_copy;
    dcomplex  beta;
    int       k   = 1;
    int       ldx = m;
    int       ldy = m;

#ifdef BLIS1_ENABLE_CBLAS_INTERFACES
    enum CBLAS_ORDER     cblas_order = CblasColMajor;
    enum CBLAS_UPLO      cblas_uplo;
    enum CBLAS_TRANSPOSE cblas_trans;

    bl1_param_map_to_netlib_uplo( uplo, &cblas_uplo );
    bl1_param_map_to_netlib_trans( BLIS1_NO_TRANSPOSE, &cblas_trans );

    x_copy = bl1_zallocv( m );
    y_copy = bl1_zallocv( m );

    bl1_zcopyv( BLIS1_NO_CONJUGATE,
                m,
                x,      incx,
                x_copy, 1 );

    bl1_zcopyv( BLIS1_NO_CONJUGATE,
                m,
                y,      incy,
                y_copy, 1 );

    beta.real = 1.0;
    beta.imag = 0.0;

    cblas_zsyr2k( cblas_order,
                  cblas_uplo,
                  cblas_trans,
                  m,
                  k,
                  alpha,
                  x_copy, ldx,
                  y_copy, ldy,
                  &beta,
                  a,      lda );

    bl1_zfree( x_copy );
    bl1_zfree( y_copy );
#else
    char blas_uplo;
    char blas_trans;

    bl1_param_map_to_netlib_uplo( uplo, &blas_uplo );
    bl1_param_map_to_netlib_trans( BLIS1_NO_TRANSPOSE, &blas_trans );

    x_copy = bl1_zallocv( m );
    y_copy = bl1_zallocv( m );

    bl1_zcopyv( BLIS1_NO_CONJUGATE,
                m,
                x,      incx,
                x_copy, 1 );

    bl1_zcopyv( BLIS1_NO_CONJUGATE,
                m,
                y,      incy,
                y_copy, 1 );

    beta.real = 1.0;
    beta.imag = 0.0;

    F77_zsyr2k ( &blas_uplo,
                 &blas_trans,
                 &m,
                 &k,
                 alpha,
                 x_copy, &ldx,
                 y_copy, &ldy,
                 &beta,
                 a,      &lda );

    bl1_zfree( x_copy );
    bl1_zfree( y_copy );
#endif
}