LAPACK  3.5.0
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lapacke_dsfrk_work.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_dsfrk_work (int matrix_order, char transr, char uplo, char trans, lapack_int n, lapack_int k, double alpha, const double *a, lapack_int lda, double beta, double *c)

Function/Subroutine Documentation

lapack_int LAPACKE_dsfrk_work ( int  matrix_order,
char  transr,
char  uplo,
char  trans,
lapack_int  n,
lapack_int  k,
double  alpha,
const double *  a,
lapack_int  lda,
double  beta,
double *  c 
)

Definition at line 36 of file lapacke_dsfrk_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dsfrk( &transr, &uplo, &trans, &n, &k, &alpha, a, &lda, &beta,
c );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int na = LAPACKE_lsame( trans, 'n' ) ? n : k;
lapack_int ka = LAPACKE_lsame( trans, 'n' ) ? k : n;
lapack_int lda_t = MAX(1,na);
double* a_t = NULL;
double* c_t = NULL;
/* Check leading dimension(s) */
if( lda < ka ) {
info = -9;
LAPACKE_xerbla( "LAPACKE_dsfrk_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,ka) );
if( a_t == NULL ) {
goto exit_level_0;
}
c_t = (double*)
LAPACKE_malloc( sizeof(double) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
if( c_t == NULL ) {
goto exit_level_1;
}
/* Transpose input matrices */
LAPACKE_dge_trans( matrix_order, na, ka, a, lda, a_t, lda_t );
LAPACKE_dpf_trans( matrix_order, transr, uplo, n, c, c_t );
/* Call LAPACK function and adjust info */
LAPACK_dsfrk( &transr, &uplo, &trans, &n, &k, &alpha, a_t, &lda_t,
&beta, c_t );
info = 0; /* LAPACK call is ok! */
/* Transpose output matrices */
LAPACKE_dpf_trans( LAPACK_COL_MAJOR, transr, uplo, n, c_t, c );
/* Release memory and exit */
LAPACKE_free( c_t );
exit_level_1:
LAPACKE_free( a_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_dsfrk_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dsfrk_work", info );
}
return info;
}

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