LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dgghrd_work()

lapack_int LAPACKE_dgghrd_work ( int  matrix_layout,
char  compq,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double *  q,
lapack_int  ldq,
double *  z,
lapack_int  ldz 
)

Definition at line 35 of file lapacke_dgghrd_work.c.

40{
41 lapack_int info = 0;
42 if( matrix_layout == LAPACK_COL_MAJOR ) {
43 /* Call LAPACK function and adjust info */
44 LAPACK_dgghrd( &compq, &compz, &n, &ilo, &ihi, a, &lda, b, &ldb, q,
45 &ldq, z, &ldz, &info );
46 if( info < 0 ) {
47 info = info - 1;
48 }
49 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50 lapack_int lda_t = MAX(1,n);
51 lapack_int ldb_t = MAX(1,n);
52 lapack_int ldq_t = MAX(1,n);
53 lapack_int ldz_t = MAX(1,n);
54 double* a_t = NULL;
55 double* b_t = NULL;
56 double* q_t = NULL;
57 double* z_t = NULL;
58 /* Check leading dimension(s) */
59 if( lda < n ) {
60 info = -8;
61 LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
62 return info;
63 }
64 if( ldb < n ) {
65 info = -10;
66 LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
67 return info;
68 }
69 if( ldq < n ) {
70 info = -12;
71 LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
72 return info;
73 }
74 if( ldz < n ) {
75 info = -14;
76 LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
77 return info;
78 }
79 /* Allocate memory for temporary array(s) */
80 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
81 if( a_t == NULL ) {
83 goto exit_level_0;
84 }
85 b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
86 if( b_t == NULL ) {
88 goto exit_level_1;
89 }
90 if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
91 q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,n) );
92 if( q_t == NULL ) {
94 goto exit_level_2;
95 }
96 }
97 if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
98 z_t = (double*)LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,n) );
99 if( z_t == NULL ) {
101 goto exit_level_3;
102 }
103 }
104 /* Transpose input matrices */
105 LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
106 LAPACKE_dge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
107 if( LAPACKE_lsame( compq, 'v' ) ) {
108 LAPACKE_dge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
109 }
110 if( LAPACKE_lsame( compz, 'v' ) ) {
111 LAPACKE_dge_trans( matrix_layout, n, n, z, ldz, z_t, ldz_t );
112 }
113 /* Call LAPACK function and adjust info */
114 LAPACK_dgghrd( &compq, &compz, &n, &ilo, &ihi, a_t, &lda_t, b_t, &ldb_t,
115 q_t, &ldq_t, z_t, &ldz_t, &info );
116 if( info < 0 ) {
117 info = info - 1;
118 }
119 /* Transpose output matrices */
120 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
121 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
122 if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
123 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
124 }
125 if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
126 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
127 }
128 /* Release memory and exit */
129 if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
130 LAPACKE_free( z_t );
131 }
132exit_level_3:
133 if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
134 LAPACKE_free( q_t );
135 }
136exit_level_2:
137 LAPACKE_free( b_t );
138exit_level_1:
139 LAPACKE_free( a_t );
140exit_level_0:
141 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
142 LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
143 }
144 } else {
145 info = -1;
146 LAPACKE_xerbla( "LAPACKE_dgghrd_work", info );
147 }
148 return info;
149}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_dgghrd(...)
Definition: lapack.h:5119
#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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
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