LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sggevx_work()

lapack_int LAPACKE_sggevx_work ( int  matrix_layout,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
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,
lapack_int ilo,
lapack_int ihi,
float *  lscale,
float *  rscale,
float *  abnrm,
float *  bbnrm,
float *  rconde,
float *  rcondv,
float *  work,
lapack_int  lwork,
lapack_int iwork,
lapack_logical bwork 
)

Definition at line 36 of file lapacke_sggevx_work.c.

46 {
47  lapack_int info = 0;
48  if( matrix_layout == LAPACK_COL_MAJOR ) {
49  /* Call LAPACK function and adjust info */
50  LAPACK_sggevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda, b, &ldb,
51  alphar, alphai, beta, vl, &ldvl, vr, &ldvr, ilo, ihi,
52  lscale, rscale, abnrm, bbnrm, rconde, rcondv, work,
53  &lwork, iwork, bwork, &info );
54  if( info < 0 ) {
55  info = info - 1;
56  }
57  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
58  lapack_int lda_t = MAX(1,n);
59  lapack_int ldb_t = MAX(1,n);
60  lapack_int ldvl_t = MAX(1,n);
61  lapack_int ldvr_t = MAX(1,n);
62  float* a_t = NULL;
63  float* b_t = NULL;
64  float* vl_t = NULL;
65  float* vr_t = NULL;
66  /* Check leading dimension(s) */
67  if( lda < n ) {
68  info = -8;
69  LAPACKE_xerbla( "LAPACKE_sggevx_work", info );
70  return info;
71  }
72  if( ldb < n ) {
73  info = -10;
74  LAPACKE_xerbla( "LAPACKE_sggevx_work", info );
75  return info;
76  }
77  if( ldvl < n ) {
78  info = -15;
79  LAPACKE_xerbla( "LAPACKE_sggevx_work", info );
80  return info;
81  }
82  if( ldvr < n ) {
83  info = -17;
84  LAPACKE_xerbla( "LAPACKE_sggevx_work", info );
85  return info;
86  }
87  /* Query optimal working array(s) size if requested */
88  if( lwork == -1 ) {
89  LAPACK_sggevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda_t, b,
90  &ldb_t, alphar, alphai, beta, vl, &ldvl_t, vr,
91  &ldvr_t, ilo, ihi, lscale, rscale, abnrm, bbnrm,
92  rconde, rcondv, work, &lwork, iwork, bwork, &info );
93  return (info < 0) ? (info - 1) : info;
94  }
95  /* Allocate memory for temporary array(s) */
96  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
97  if( a_t == NULL ) {
99  goto exit_level_0;
100  }
101  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
102  if( b_t == NULL ) {
104  goto exit_level_1;
105  }
106  if( LAPACKE_lsame( jobvl, 'v' ) ) {
107  vl_t = (float*)LAPACKE_malloc( sizeof(float) * ldvl_t * MAX(1,n) );
108  if( vl_t == NULL ) {
110  goto exit_level_2;
111  }
112  }
113  if( LAPACKE_lsame( jobvr, 'v' ) ) {
114  vr_t = (float*)LAPACKE_malloc( sizeof(float) * ldvr_t * MAX(1,n) );
115  if( vr_t == NULL ) {
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_sggevx( &balanc, &jobvl, &jobvr, &sense, &n, a_t, &lda_t, b_t,
125  &ldb_t, alphar, alphai, beta, vl_t, &ldvl_t, vr_t,
126  &ldvr_t, ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
127  rcondv, work, &lwork, iwork, bwork, &info );
128  if( info < 0 ) {
129  info = info - 1;
130  }
131  /* Transpose output matrices */
132  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
133  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
134  if( LAPACKE_lsame( jobvl, 'v' ) ) {
135  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
136  }
137  if( LAPACKE_lsame( jobvr, 'v' ) ) {
138  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
139  }
140  /* Release memory and exit */
141  if( LAPACKE_lsame( jobvr, 'v' ) ) {
142  LAPACKE_free( vr_t );
143  }
144 exit_level_3:
145  if( LAPACKE_lsame( jobvl, 'v' ) ) {
146  LAPACKE_free( vl_t );
147  }
148 exit_level_2:
149  LAPACKE_free( b_t );
150 exit_level_1:
151  LAPACKE_free( a_t );
152 exit_level_0:
153  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
154  LAPACKE_xerbla( "LAPACKE_sggevx_work", info );
155  }
156  } else {
157  info = -1;
158  LAPACKE_xerbla( "LAPACKE_sggevx_work", info );
159  }
160  return info;
161 }
#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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
void LAPACK_sggevx(char *balanc, char *jobvl, char *jobvr, char *sense, 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, lapack_int *ilo, lapack_int *ihi, float *lscale, float *rscale, float *abnrm, float *bbnrm, float *rconde, float *rcondv, float *work, lapack_int *lwork, lapack_int *iwork, lapack_logical *bwork, lapack_int *info)
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