LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sggev3_work()

lapack_int LAPACKE_sggev3_work ( int  matrix_layout,
char  jobvl,
char  jobvr,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
float *  alphar,
float *  alphai,
float *  beta,
float *  vl,
lapack_int  ldvl,
float *  vr,
lapack_int  ldvr,
float *  work,
lapack_int  lwork 
)

Definition at line 35 of file lapacke_sggev3_work.c.

43{
44 lapack_int info = 0;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_sggev3( &jobvl, &jobvr, &n, a, &lda, b, &ldb, alphar, alphai,
48 beta, vl, &ldvl, vr, &ldvr, work, &lwork, &info );
49 if( info < 0 ) {
50 info = info - 1;
51 }
52 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53 lapack_int nrows_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
54 lapack_int ncols_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
55 lapack_int nrows_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
56 lapack_int ncols_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
57 lapack_int lda_t = MAX(1,n);
58 lapack_int ldb_t = MAX(1,n);
59 lapack_int ldvl_t = MAX(1,nrows_vl);
60 lapack_int ldvr_t = MAX(1,nrows_vr);
61 float* a_t = NULL;
62 float* b_t = NULL;
63 float* vl_t = NULL;
64 float* vr_t = NULL;
65 /* Check leading dimension(s) */
66 if( lda < n ) {
67 info = -6;
68 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
69 return info;
70 }
71 if( ldb < n ) {
72 info = -8;
73 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
74 return info;
75 }
76 if( ldvl < ncols_vl ) {
77 info = -13;
78 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
79 return info;
80 }
81 if( ldvr < ncols_vr ) {
82 info = -15;
83 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
84 return info;
85 }
86 /* Query optimal working array(s) size if requested */
87 if( lwork == -1 ) {
88 LAPACK_sggev3( &jobvl, &jobvr, &n, a, &lda_t, b, &ldb_t,
89 alphar, alphai, beta, vl, &ldvl_t, vr, &ldvr_t,
90 work, &lwork, &info );
91 return (info < 0) ? (info - 1) : info;
92 }
93 /* Allocate memory for temporary array(s) */
94 a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
95 if( a_t == NULL ) {
96 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
97 goto exit_level_0;
98 }
99 b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
100 if( b_t == NULL ) {
101 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
102 goto exit_level_1;
103 }
104 if( LAPACKE_lsame( jobvl, 'v' ) ) {
105 vl_t = (float*)
106 LAPACKE_malloc( sizeof(float) * ldvl_t * MAX(1,ncols_vl) );
107 if( vl_t == NULL ) {
108 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
109 goto exit_level_2;
110 }
111 }
112 if( LAPACKE_lsame( jobvr, 'v' ) ) {
113 vr_t = (float*)
114 LAPACKE_malloc( sizeof(float) * ldvr_t * MAX(1,ncols_vr) );
115 if( vr_t == NULL ) {
116 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
117 goto exit_level_3;
118 }
119 }
120 /* Transpose input matrices */
121 LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
122 LAPACKE_sge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
123 /* Call LAPACK function and adjust info */
124 LAPACK_sggev3( &jobvl, &jobvr, &n, a_t, &lda_t, b_t, &ldb_t, alphar,
125 alphai, beta, vl_t, &ldvl_t, vr_t, &ldvr_t,
126 work, &lwork, &info );
127 if( info < 0 ) {
128 info = info - 1;
129 }
130 /* Transpose output matrices */
131 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
132 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
133 if( LAPACKE_lsame( jobvl, 'v' ) ) {
134 LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrows_vl, ncols_vl, vl_t,
135 ldvl_t, vl, ldvl );
136 }
137 if( LAPACKE_lsame( jobvr, 'v' ) ) {
138 LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrows_vr, ncols_vr, vr_t,
139 ldvr_t, vr, ldvr );
140 }
141 /* Release memory and exit */
142 if( LAPACKE_lsame( jobvr, 'v' ) ) {
143 LAPACKE_free( vr_t );
144 }
145exit_level_3:
146 if( LAPACKE_lsame( jobvl, 'v' ) ) {
147 LAPACKE_free( vl_t );
148 }
149exit_level_2:
150 LAPACKE_free( b_t );
151exit_level_1:
152 LAPACKE_free( a_t );
153exit_level_0:
154 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
155 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
156 }
157 } else {
158 info = -1;
159 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
160 }
161 return info;
162}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_sggev3
#define LAPACK_sggev3(...)
Definition: lapack.h:4814
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_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
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