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/*
-- MAGMA (version 2.9.0) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date January 2025
@generated from magmablas/zher2k_batched.cpp, normal z -> s, Wed Jan 22 14:42:02 2025
@author Jakub Kurzak
@author Stan Tomov
@author Mark Gates
@author Azzam Haidar
@author Ahmad Abdelfattah
*/
#include "magma_internal.h"
#include "commonblas_s.h"
#define PRECISION_s
#define REAL
/***************************************************************************//**
Purpose
-------
SSYR2K performs one of the symmetric rank 2k operations
C := alpha*A*B**H + conjg( alpha )*B*A**H + beta*C,
or
C := alpha*A**H*B + conjg( alpha )*B**H*A + beta*C,
where alpha and beta are scalars with beta real, C is an n by n
symmetric matrix and A and B are n by k matrices in the first case
and k by n matrices in the second case.
Parameters
----------
@param[in]
uplo magma_uplo_t.
On entry, UPLO specifies whether the upper or lower
triangular part of the array C is to be referenced as
follows:
- = MagmaUpper: Only the upper triangular part of C is to be referenced.
- = MagmaLower: Only the lower triangular part of C is to be referenced.
@param[in]
trans magma_trans_t.
On entry, TRANS specifies the operation to be performed as
follows:
- = MagmaNoTrans: C := alpha*A*B**H + conj( alpha )*B*A**H + beta*C.
- = MagmaTrans: C := alpha*A**H*B + conj( alpha )*B**H*A + beta*C.
@param[in]
n INTEGER.
On entry, N specifies the order of the matrix C. N must be
at least zero.
@param[in]
k INTEGER.
On entry with TRANS = MagmaNoTrans, k specifies the number
of columns of the matrices A and B, and on entry with
TRANS = MagmaTrans, k specifies the number of rows of the
matrices A and B. k must be at least zero.
@param[in]
alpha REAL.
On entry, ALPHA specifies the scalar alpha.
@param[in]
dA_array Array of pointers, dimension (batchCount).
Each is a REAL array of DIMENSION ( ldda, ka ), where ka is
k when TRANS = MagmaNoTrans, and is n otherwise.
Before entry with TRANS = MagmaNoTrans, the leading n by k
part of the array A must contain the matrix A, otherwise
the leading k by n part of the array A must contain the
matrix A.
@param[in]
ldda INTEGER.
On entry, ldda specifies the first dimension of A as declared
in the calling (sub) program. When TRANS = MagmaNoTrans
then ldda must be at least max( 1, n ), otherwise ldda must
be at least max( 1, k ).
@param[in]
dB_array Array of pointers, dimension (batchCount).
Each is a REAL array of DIMENSION ( ldb, kb ), where kb is
k when TRANS = MagmaNoTrans, and is n otherwise.
Before entry with TRANS = MagmaNoTrans, the leading n by k
part of the array B must contain the matrix B, otherwise
the leading k by n part of the array B must contain the
matrix B.
@param[in]
lddb INTEGER
On entry, lddb specifies the first dimension of B as declared
in the calling (sub) program. When TRANS = MagmaNoTrans
then lddb must be at least max( 1, n ), otherwise lddb must
be at least max( 1, k ).
Unchanged on exit.
@param[in]
beta REAL.
On entry, BETA specifies the scalar beta.
@param[in,out]
dC_array Array of pointers, dimension (batchCount).
Each is REAL array of DIMENSION ( lddc, n ).
Before entry with UPLO = MagmaUpper, the leading n by n
upper triangular part of the array C must contain the upper
triangular part of the symmetric matrix and the strictly
lower triangular part of C is not referenced. On exit, the
upper triangular part of the array C is overwritten by the
upper triangular part of the updated matrix.
Before entry with UPLO = MagmaLower, the leading n by n
lower triangular part of the array C must contain the lower
triangular part of the symmetric matrix and the strictly
upper triangular part of C is not referenced. On exit, the
lower triangular part of the array C is overwritten by the
lower triangular part of the updated matrix.
Note that the imaginary parts of the diagonal elements need
not be set, they are assumed to be zero, and on exit they
are set to zero.
@param[in]
lddc INTEGER.
On entry, lddc specifies the first dimension of each array C as declared
in the calling (sub) program. lddc must be at least
max( 1, n ).
@param[in]
batchCount INTEGER
The number of matrices to operate on.
@param[in]
queue magma_queue_t
Queue to execute in.
@ingroup magma_her2k_batched
*******************************************************************************/
extern "C" void
magmablas_ssyr2k_batched(
magma_uplo_t uplo, magma_trans_t trans, magma_int_t n, magma_int_t k,
float alpha,
float const * const * dA_array, magma_int_t ldda,
float const * const * dB_array, magma_int_t lddb,
float beta,
float **dC_array, magma_int_t lddc, magma_int_t batchCount, magma_queue_t queue )
{
magma_int_t info = 0;
float cbeta = MAGMA_S_MAKE(beta, 0.);
float c_one = MAGMA_S_MAKE(1., 0.);
if ( uplo != MagmaLower && uplo != MagmaUpper) {
info = -1;
#ifdef COMPLEX
} else if ( trans != MagmaNoTrans && trans != MagmaConjTrans) {
#else
} else if ( trans != MagmaNoTrans && trans != MagmaTrans && trans != MagmaConjTrans) {
#endif
info = -2;
} else if ( n < 0 ) {
info = -3;
} else if ( k < 0 ) {
info = -4;
} else if ( ((trans == MagmaNoTrans) && ldda < max(1,n)) ||
((trans != MagmaNoTrans) && ldda < max(1,k)) ) {
info = -7;
} else if ( ((trans == MagmaNoTrans) && lddb < max(1,n)) ||
((trans != MagmaNoTrans) && lddb < max(1,k)) ) {
info = -9;
} else if ( lddc < max(1,n) ) {
info = -12;
} else if ( batchCount < 0 ) {
info = -13;
}
if ( info != 0 ) {
magma_xerbla( __func__, -(info) );
return;
}
// Quick return if possible
if( ( n == 0 ) ||
( (alpha == 0 || k == 0) && (beta == 1) ) ||
( batchCount == 0 )
) return;
if( trans == MagmaNoTrans){
magmablas_ssyrk_batched_core(
uplo, MagmaNoTrans,
n, k,
alpha, dA_array, 0, 0, ldda,
dB_array, 0, 0, lddb,
cbeta, dC_array, 0, 0, lddc,
batchCount, queue );
magmablas_ssyrk_batched_core(
uplo, MagmaNoTrans,
n, k,
MAGMA_S_CONJ(alpha), dB_array, 0, 0, lddb,
dA_array, 0, 0, ldda,
c_one, dC_array, 0, 0, lddc,
batchCount, queue );
}else{
magmablas_ssyrk_batched_core(
uplo, MagmaTrans,
n, k,
alpha, dA_array, 0, 0, ldda,
dB_array, 0, 0, lddb,
cbeta, dC_array, 0, 0, lddc,
batchCount, queue );
magmablas_ssyrk_batched_core(
uplo, MagmaTrans,
n, k,
MAGMA_S_CONJ(alpha), dB_array, 0, 0, lddb,
dA_array, 0, 0, ldda,
c_one, dC_array, 0, 0, lddc,
batchCount, queue );
}
}
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