LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sggbak_work()

lapack_int LAPACKE_sggbak_work ( int  matrix_layout,
char  job,
char  side,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
const float *  lscale,
const float *  rscale,
lapack_int  m,
float *  v,
lapack_int  ldv 
)

Definition at line 35 of file lapacke_sggbak_work.c.

39{
40 lapack_int info = 0;
41 if( matrix_layout == LAPACK_COL_MAJOR ) {
42 /* Call LAPACK function and adjust info */
43 LAPACK_sggbak( &job, &side, &n, &ilo, &ihi, lscale, rscale, &m, v, &ldv,
44 &info );
45 if( info < 0 ) {
46 info = info - 1;
47 }
48 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49 lapack_int ldv_t = MAX(1,n);
50 float* v_t = NULL;
51 /* Check leading dimension(s) */
52 if( ldv < m ) {
53 info = -11;
54 LAPACKE_xerbla( "LAPACKE_sggbak_work", info );
55 return info;
56 }
57 /* Allocate memory for temporary array(s) */
58 v_t = (float*)LAPACKE_malloc( sizeof(float) * ldv_t * MAX(1,m) );
59 if( v_t == NULL ) {
61 goto exit_level_0;
62 }
63 /* Transpose input matrices */
64 LAPACKE_sge_trans( matrix_layout, n, m, v, ldv, v_t, ldv_t );
65 /* Call LAPACK function and adjust info */
66 LAPACK_sggbak( &job, &side, &n, &ilo, &ihi, lscale, rscale, &m, v_t,
67 &ldv_t, &info );
68 if( info < 0 ) {
69 info = info - 1;
70 }
71 /* Transpose output matrices */
72 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, m, v_t, ldv_t, v, ldv );
73 /* Release memory and exit */
74 LAPACKE_free( v_t );
75exit_level_0:
76 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
77 LAPACKE_xerbla( "LAPACKE_sggbak_work", info );
78 }
79 } else {
80 info = -1;
81 LAPACKE_xerbla( "LAPACKE_sggbak_work", info );
82 }
83 return info;
84}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_sggbak(...)
Definition: lapack.h:4267
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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