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

lapack_int LAPACKE_sopmtr_work (int matrix_order, char side, char uplo, char trans, lapack_int m, lapack_int n, const float *ap, const float *tau, float *c, lapack_int ldc, float *work)

Function/Subroutine Documentation

lapack_int LAPACKE_sopmtr_work ( int  matrix_order,
char  side,
char  uplo,
char  trans,
lapack_int  m,
lapack_int  n,
const float *  ap,
const float *  tau,
float *  c,
lapack_int  ldc,
float *  work 
)

Definition at line 36 of file lapacke_sopmtr_work.c.

{
lapack_int info = 0;
lapack_int ldc_t;
float *ap_t = NULL, *c_t = NULL;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_sopmtr( &side, &uplo, &trans, &m, &n, ap, tau, c, &ldc, work,
&info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
r = LAPACKE_lsame( side, 'l' ) ? m : n;
ldc_t = MAX(1,m);
/* Check leading dimension(s) */
if( ldc < n ) {
info = -10;
LAPACKE_xerbla( "LAPACKE_sopmtr_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
c_t = (float*)LAPACKE_malloc( sizeof(float) * ldc_t * MAX(1,n) );
if( c_t == NULL ) {
goto exit_level_0;
}
ap_t = (float*)
LAPACKE_malloc( sizeof(float) * ( MAX(1,r) * MAX(2,r+1) ) / 2 );
if( ap_t == NULL ) {
goto exit_level_1;
}
/* Transpose input matrices */
LAPACKE_sge_trans( matrix_order, m, n, c, ldc, c_t, ldc_t );
LAPACKE_ssp_trans( matrix_order, uplo, r, ap, ap_t );
/* Call LAPACK function and adjust info */
LAPACK_sopmtr( &side, &uplo, &trans, &m, &n, ap_t, tau, c_t, &ldc_t,
work, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
/* Release memory and exit */
LAPACKE_free( ap_t );
exit_level_1:
LAPACKE_free( c_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_sopmtr_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_sopmtr_work", info );
}
return info;
}

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