double LAPACKE_dlange_work( int matrix_layout, char norm, lapack_int m,
lapack_int n, const double* a, lapack_int lda,
double* work )
{
lapack_int info = 0;
double res = 0.;
char norm_lapack;
if( matrix_layout == LAPACK_COL_MAJOR ) {
/* Call LAPACK function */
res = LAPACK_dlange( &norm, &m, &n, a, &lda, work );
} else if( matrix_layout == LAPACK_ROW_MAJOR ) {
double* work_lapack = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -6;
LAPACKE_xerbla( "LAPACKE_dlange_work", info );
return info;
}
if( LAPACKE_lsame( norm, '1' ) || LAPACKE_lsame( norm, 'o' ) ) {
norm_lapack = 'i';
} else if( LAPACKE_lsame( norm, 'i' ) ) {
norm_lapack = '1';
} else {
norm_lapack = norm;
}
/* Allocate memory for work array(s) */
if( LAPACKE_lsame( norm_lapack, 'i' ) ) {
work_lapack = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
if( work_lapack == NULL ) {
info = LAPACK_WORK_MEMORY_ERROR;
goto exit_level_0;
}
}
/* Call LAPACK function */
res = LAPACK_dlange( &norm_lapack, &n, &m, a, &lda, work_lapack );
/* Release memory and exit */
if( work_lapack ) {
LAPACKE_free( work_lapack );
}
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dlange_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dlange_work", info );
}
return res;
}
double LAPACKE_dlange_work( int matrix_order, char norm, lapack_int m,
lapack_int n, const double* a, lapack_int lda,
double* work )
{
lapack_int info = 0;
double res = 0.;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
res = LAPACK_dlange( &norm, &m, &n, a, &lda, work );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,m);
double* a_t = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -6;
LAPACKE_xerbla( "LAPACKE_dlange_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
if( a_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_0;
}
/* Transpose input matrices */
LAPACKE_dge_trans( matrix_order, m, n, a, lda, a_t, lda_t );
/* Call LAPACK function and adjust info */
res = LAPACK_dlange( &norm, &m, &n, a_t, &lda_t, work );
info = 0; /* LAPACK call is ok! */
/* Release memory and exit */
LAPACKE_free( a_t );
exit_level_0:
if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dlange_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dlange_work", info );
}
return res;
}
