LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sgbtrf_work()

lapack_int LAPACKE_sgbtrf_work ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
float *  ab,
lapack_int  ldab,
lapack_int ipiv 
)

Definition at line 35 of file lapacke_sgbtrf_work.c.

38{
39 lapack_int info = 0;
40 if( matrix_layout == LAPACK_COL_MAJOR ) {
41 /* Call LAPACK function and adjust info */
42 LAPACK_sgbtrf( &m, &n, &kl, &ku, ab, &ldab, ipiv, &info );
43 if( info < 0 ) {
44 info = info - 1;
45 }
46 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
47 lapack_int ldab_t = MAX(1,2*kl+ku+1);
48 float* ab_t = NULL;
49 /* Check leading dimension(s) */
50 if( ldab < n ) {
51 info = -7;
52 LAPACKE_xerbla( "LAPACKE_sgbtrf_work", info );
53 return info;
54 }
55 /* Allocate memory for temporary array(s) */
56 ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
57 if( ab_t == NULL ) {
59 goto exit_level_0;
60 }
61 /* Transpose input matrices */
62 LAPACKE_sgb_trans( matrix_layout, m, n, kl, kl+ku, ab, ldab, ab_t,
63 ldab_t );
64 /* Call LAPACK function and adjust info */
65 LAPACK_sgbtrf( &m, &n, &kl, &ku, ab_t, &ldab_t, ipiv, &info );
66 if( info < 0 ) {
67 info = info - 1;
68 }
69 /* Transpose output matrices */
70 LAPACKE_sgb_trans( LAPACK_COL_MAJOR, m, n, kl, kl+ku, ab_t, ldab_t, ab,
71 ldab );
72 /* Release memory and exit */
73 LAPACKE_free( ab_t );
74exit_level_0:
75 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
76 LAPACKE_xerbla( "LAPACKE_sgbtrf_work", info );
77 }
78 } else {
79 info = -1;
80 LAPACKE_xerbla( "LAPACKE_sgbtrf_work", info );
81 }
82 return info;
83}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_sgbtrf
Definition: lapack.h:1208
#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_sgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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