LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sgges3_work()

lapack_int LAPACKE_sgges3_work ( int  matrix_layout,
char  jobvsl,
char  jobvsr,
char  sort,
LAPACK_S_SELECT3  selctg,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
lapack_int *  sdim,
float *  alphar,
float *  alphai,
float *  beta,
float *  vsl,
lapack_int  ldvsl,
float *  vsr,
lapack_int  ldvsr,
float *  work,
lapack_int  lwork,
lapack_logical *  bwork 
)

Definition at line 35 of file lapacke_sgges3_work.c.

44{
45 lapack_int info = 0;
46 if( matrix_layout == LAPACK_COL_MAJOR ) {
47 /* Call LAPACK function and adjust info */
48 LAPACK_sgges3( &jobvsl, &jobvsr, &sort, selctg, &n, a, &lda, b, &ldb,
49 sdim, alphar, alphai, beta, vsl, &ldvsl, vsr, &ldvsr,
50 work, &lwork, bwork, &info );
51 if( info < 0 ) {
52 info = info - 1;
53 }
54 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55 lapack_int lda_t = MAX(1,n);
56 lapack_int ldb_t = MAX(1,n);
57 lapack_int ldvsl_t = MAX(1,n);
58 lapack_int ldvsr_t = MAX(1,n);
59 float* a_t = NULL;
60 float* b_t = NULL;
61 float* vsl_t = NULL;
62 float* vsr_t = NULL;
63 /* Check leading dimension(s) */
64 if( lda < n ) {
65 info = -8;
66 LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
67 return info;
68 }
69 if( ldb < n ) {
70 info = -10;
71 LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
72 return info;
73 }
74 if( ldvsl < n ) {
75 info = -16;
76 LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
77 return info;
78 }
79 if( ldvsr < n ) {
80 info = -18;
81 LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
82 return info;
83 }
84 /* Query optimal working array(s) size if requested */
85 if( lwork == -1 ) {
86 LAPACK_sgges3( &jobvsl, &jobvsr, &sort, selctg, &n, a, &lda_t, b,
87 &ldb_t, sdim, alphar, alphai, beta, vsl, &ldvsl_t,
88 vsr, &ldvsr_t, work, &lwork, bwork, &info );
89 return (info < 0) ? (info - 1) : info;
90 }
91 /* Allocate memory for temporary array(s) */
92 a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
93 if( a_t == NULL ) {
94 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
95 goto exit_level_0;
96 }
97 b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
98 if( b_t == NULL ) {
99 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
100 goto exit_level_1;
101 }
102 if( LAPACKE_lsame( jobvsl, 'v' ) ) {
103 vsl_t = (float*)
104 LAPACKE_malloc( sizeof(float) * ldvsl_t * MAX(1,n) );
105 if( vsl_t == NULL ) {
106 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
107 goto exit_level_2;
108 }
109 }
110 if( LAPACKE_lsame( jobvsr, 'v' ) ) {
111 vsr_t = (float*)
112 LAPACKE_malloc( sizeof(float) * ldvsr_t * MAX(1,n) );
113 if( vsr_t == NULL ) {
114 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
115 goto exit_level_3;
116 }
117 }
118 /* Transpose input matrices */
119 LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
120 LAPACKE_sge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
121 /* Call LAPACK function and adjust info */
122 LAPACK_sgges3( &jobvsl, &jobvsr, &sort, selctg, &n, a_t, &lda_t, b_t,
123 &ldb_t, sdim, alphar, alphai, beta, vsl_t, &ldvsl_t,
124 vsr_t, &ldvsr_t, work, &lwork, bwork, &info );
125 if( info < 0 ) {
126 info = info - 1;
127 }
128 /* Transpose output matrices */
129 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
130 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
131 if( LAPACKE_lsame( jobvsl, 'v' ) ) {
132 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, vsl_t, ldvsl_t, vsl,
133 ldvsl );
134 }
135 if( LAPACKE_lsame( jobvsr, 'v' ) ) {
136 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, vsr_t, ldvsr_t, vsr,
137 ldvsr );
138 }
139 /* Release memory and exit */
140 if( LAPACKE_lsame( jobvsr, 'v' ) ) {
141 LAPACKE_free( vsr_t );
142 }
143exit_level_3:
144 if( LAPACKE_lsame( jobvsl, 'v' ) ) {
145 LAPACKE_free( vsl_t );
146 }
147exit_level_2:
148 LAPACKE_free( b_t );
149exit_level_1:
150 LAPACKE_free( a_t );
151exit_level_0:
152 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
153 LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
154 }
155 } else {
156 info = -1;
157 LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
158 }
159 return info;
160}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_sgges3
#define LAPACK_sgges3(...)
Definition: lapack.h:4526
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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