LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgghrd_work()

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

Definition at line 36 of file lapacke_sgghrd_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_sgghrd( &compq, &compz, &n, &ilo, &ihi, a, &lda, b, &ldb, q,
46  &ldq, z, &ldz, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int lda_t = MAX(1,n);
52  lapack_int ldb_t = MAX(1,n);
53  lapack_int ldq_t = MAX(1,n);
54  lapack_int ldz_t = MAX(1,n);
55  float* a_t = NULL;
56  float* b_t = NULL;
57  float* q_t = NULL;
58  float* z_t = NULL;
59  /* Check leading dimension(s) */
60  if( lda < n ) {
61  info = -8;
62  LAPACKE_xerbla( "LAPACKE_sgghrd_work", info );
63  return info;
64  }
65  if( ldb < n ) {
66  info = -10;
67  LAPACKE_xerbla( "LAPACKE_sgghrd_work", info );
68  return info;
69  }
70  if( ldq < n ) {
71  info = -12;
72  LAPACKE_xerbla( "LAPACKE_sgghrd_work", info );
73  return info;
74  }
75  if( ldz < n ) {
76  info = -14;
77  LAPACKE_xerbla( "LAPACKE_sgghrd_work", info );
78  return info;
79  }
80  /* Allocate memory for temporary array(s) */
81  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
82  if( a_t == NULL ) {
84  goto exit_level_0;
85  }
86  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
87  if( b_t == NULL ) {
89  goto exit_level_1;
90  }
91  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
92  q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
93  if( q_t == NULL ) {
95  goto exit_level_2;
96  }
97  }
98  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
99  z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,n) );
100  if( z_t == NULL ) {
102  goto exit_level_3;
103  }
104  }
105  /* Transpose input matrices */
106  LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
107  LAPACKE_sge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
108  if( LAPACKE_lsame( compq, 'v' ) ) {
109  LAPACKE_sge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
110  }
111  if( LAPACKE_lsame( compz, 'v' ) ) {
112  LAPACKE_sge_trans( matrix_layout, n, n, z, ldz, z_t, ldz_t );
113  }
114  /* Call LAPACK function and adjust info */
115  LAPACK_sgghrd( &compq, &compz, &n, &ilo, &ihi, a_t, &lda_t, b_t, &ldb_t,
116  q_t, &ldq_t, z_t, &ldz_t, &info );
117  if( info < 0 ) {
118  info = info - 1;
119  }
120  /* Transpose output matrices */
121  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
122  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
123  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
124  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
125  }
126  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
127  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
128  }
129  /* Release memory and exit */
130  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
131  LAPACKE_free( z_t );
132  }
133 exit_level_3:
134  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
135  LAPACKE_free( q_t );
136  }
137 exit_level_2:
138  LAPACKE_free( b_t );
139 exit_level_1:
140  LAPACKE_free( a_t );
141 exit_level_0:
142  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
143  LAPACKE_xerbla( "LAPACKE_sgghrd_work", info );
144  }
145  } else {
146  info = -1;
147  LAPACKE_xerbla( "LAPACKE_sgghrd_work", info );
148  }
149  return info;
150 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
void LAPACK_sgghrd(char *compq, char *compz, lapack_int *n, lapack_int *ilo, lapack_int *ihi, float *a, lapack_int *lda, float *b, lapack_int *ldb, float *q, lapack_int *ldq, float *z, lapack_int *ldz, lapack_int *info)
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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