LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
Loading...
Searching...
No Matches

◆ LAPACKE_ssbevx_work()

lapack_int LAPACKE_ssbevx_work ( int  matrix_layout,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
lapack_int  kd,
float *  ab,
lapack_int  ldab,
float *  q,
lapack_int  ldq,
float  vl,
float  vu,
lapack_int  il,
lapack_int  iu,
float  abstol,
lapack_int *  m,
float *  w,
float *  z,
lapack_int  ldz,
float *  work,
lapack_int *  iwork,
lapack_int *  ifail 
)

Definition at line 35 of file lapacke_ssbevx_work.c.

43{
44 lapack_int info = 0;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_ssbevx( &jobz, &range, &uplo, &n, &kd, ab, &ldab, q, &ldq, &vl,
48 &vu, &il, &iu, &abstol, m, w, z, &ldz, work, iwork,
49 ifail, &info );
50 if( info < 0 ) {
51 info = info - 1;
52 }
53 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54 lapack_int ncols_z = ( LAPACKE_lsame( range, 'a' ) ||
55 LAPACKE_lsame( range, 'v' ) ) ? n :
56 ( LAPACKE_lsame( range, 'i' ) ? (iu-il+1) : 1);
57 lapack_int ldab_t = MAX(1,kd+1);
58 lapack_int ldq_t = MAX(1,n);
59 lapack_int ldz_t = MAX(1,n);
60 float* ab_t = NULL;
61 float* q_t = NULL;
62 float* z_t = NULL;
63 /* Check leading dimension(s) */
64 if( ldab < n ) {
65 info = -8;
66 LAPACKE_xerbla( "LAPACKE_ssbevx_work", info );
67 return info;
68 }
69 if( ldq < n ) {
70 info = -10;
71 LAPACKE_xerbla( "LAPACKE_ssbevx_work", info );
72 return info;
73 }
74 if( ldz < ncols_z ) {
75 info = -19;
76 LAPACKE_xerbla( "LAPACKE_ssbevx_work", info );
77 return info;
78 }
79 /* Allocate memory for temporary array(s) */
80 ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
81 if( ab_t == NULL ) {
82 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
83 goto exit_level_0;
84 }
85 if( LAPACKE_lsame( jobz, 'v' ) ) {
86 q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
87 if( q_t == NULL ) {
88 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
89 goto exit_level_1;
90 }
91 }
92 if( LAPACKE_lsame( jobz, 'v' ) ) {
93 z_t = (float*)
94 LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,ncols_z) );
95 if( z_t == NULL ) {
96 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
97 goto exit_level_2;
98 }
99 }
100 /* Transpose input matrices */
101 LAPACKE_ssb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
102 /* Call LAPACK function and adjust info */
103 LAPACK_ssbevx( &jobz, &range, &uplo, &n, &kd, ab_t, &ldab_t, q_t,
104 &ldq_t, &vl, &vu, &il, &iu, &abstol, m, w, z_t, &ldz_t,
105 work, iwork, ifail, &info );
106 if( info < 0 ) {
107 info = info - 1;
108 }
109 /* Transpose output matrices */
110 LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
111 ldab );
112 if( LAPACKE_lsame( jobz, 'v' ) ) {
113 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
114 }
115 if( LAPACKE_lsame( jobz, 'v' ) ) {
116 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, ncols_z, z_t, ldz_t, z,
117 ldz );
118 }
119 /* Release memory and exit */
120 if( LAPACKE_lsame( jobz, 'v' ) ) {
121 LAPACKE_free( z_t );
122 }
123exit_level_2:
124 if( LAPACKE_lsame( jobz, 'v' ) ) {
125 LAPACKE_free( q_t );
126 }
127exit_level_1:
128 LAPACKE_free( ab_t );
129exit_level_0:
130 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
131 LAPACKE_xerbla( "LAPACKE_ssbevx_work", info );
132 }
133 } else {
134 info = -1;
135 LAPACKE_xerbla( "LAPACKE_ssbevx_work", info );
136 }
137 return info;
138}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_ssbevx
#define LAPACK_ssbevx(...)
Definition: lapack.h:14932
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_ssb_trans
void LAPACKE_ssb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const float *in, lapack_int ldin, float *out, lapack_int ldout)
Definition: lapacke_ssb_trans.c:39
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
LAPACKE_sge_trans
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
Definition: lapacke_sge_trans.c:39
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
Here is the call graph for this function:
Here is the caller graph for this function: