LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_sgtsvx_work.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_sgtsvx_work (int matrix_order, char fact, char trans, lapack_int n, lapack_int nrhs, const float *dl, const float *d, const float *du, float *dlf, float *df, float *duf, float *du2, lapack_int *ipiv, const float *b, lapack_int ldb, float *x, lapack_int ldx, float *rcond, float *ferr, float *berr, float *work, lapack_int *iwork)

Function/Subroutine Documentation

lapack_int LAPACKE_sgtsvx_work ( int  matrix_order,
char  fact,
char  trans,
lapack_int  n,
lapack_int  nrhs,
const float *  dl,
const float *  d,
const float *  du,
float *  dlf,
float *  df,
float *  duf,
float *  du2,
lapack_int ipiv,
const float *  b,
lapack_int  ldb,
float *  x,
lapack_int  ldx,
float *  rcond,
float *  ferr,
float *  berr,
float *  work,
lapack_int iwork 
)

Definition at line 36 of file lapacke_sgtsvx_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_sgtsvx( &fact, &trans, &n, &nrhs, dl, d, du, dlf, df, duf, du2,
ipiv, b, &ldb, x, &ldx, rcond, ferr, berr, work, iwork,
&info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldb_t = MAX(1,n);
lapack_int ldx_t = MAX(1,n);
float* b_t = NULL;
float* x_t = NULL;
/* Check leading dimension(s) */
if( ldb < nrhs ) {
info = -15;
LAPACKE_xerbla( "LAPACKE_sgtsvx_work", info );
return info;
}
if( ldx < nrhs ) {
info = -17;
LAPACKE_xerbla( "LAPACKE_sgtsvx_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
if( b_t == NULL ) {
goto exit_level_0;
}
x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
if( x_t == NULL ) {
goto exit_level_1;
}
/* Transpose input matrices */
LAPACKE_sge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
/* Call LAPACK function and adjust info */
LAPACK_sgtsvx( &fact, &trans, &n, &nrhs, dl, d, du, dlf, df, duf, du2,
ipiv, b_t, &ldb_t, x_t, &ldx_t, rcond, ferr, berr, work,
iwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
/* Release memory and exit */
LAPACKE_free( x_t );
exit_level_1:
LAPACKE_free( b_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_sgtsvx_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_sgtsvx_work", info );
}
return info;
}

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