LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cggevx()

lapack_int LAPACKE_cggevx ( int  matrix_layout,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb,
lapack_complex_float alpha,
lapack_complex_float beta,
lapack_complex_float vl,
lapack_int  ldvl,
lapack_complex_float vr,
lapack_int  ldvr,
lapack_int ilo,
lapack_int ihi,
float *  lscale,
float *  rscale,
float *  abnrm,
float *  bbnrm,
float *  rconde,
float *  rcondv 
)

Definition at line 36 of file lapacke_cggevx.c.

46 {
47  lapack_int info = 0;
48  lapack_int lwork = -1;
49  /* Additional scalars declarations for work arrays */
50  lapack_int lrwork;
51  lapack_logical* bwork = NULL;
52  lapack_int* iwork = NULL;
53  float* rwork = NULL;
54  lapack_complex_float* work = NULL;
55  lapack_complex_float work_query;
56  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
57  LAPACKE_xerbla( "LAPACKE_cggevx", -1 );
58  return -1;
59  }
60 #ifndef LAPACK_DISABLE_NAN_CHECK
61  /* Optionally check input matrices for NaNs */
62  if( LAPACKE_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
63  return -7;
64  }
65  if( LAPACKE_cge_nancheck( matrix_layout, n, n, b, ldb ) ) {
66  return -9;
67  }
68 #endif
69  /* Additional scalars initializations for work arrays */
70  if( LAPACKE_lsame( balanc, 's' ) || LAPACKE_lsame( balanc, 'b' ) ) {
71  lrwork = MAX(1,6*n);
72  } else {
73  lrwork = MAX(1,2*n);
74  }
75  /* Allocate memory for working array(s) */
76  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
77  LAPACKE_lsame( sense, 'v' ) ) {
78  bwork = (lapack_logical*)
79  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
80  if( bwork == NULL ) {
82  goto exit_level_0;
83  }
84  }
85  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
86  LAPACKE_lsame( sense, 'v' ) ) {
87  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n+2) );
88  if( iwork == NULL ) {
90  goto exit_level_1;
91  }
92  }
93  rwork = (float*)LAPACKE_malloc( sizeof(float) * lrwork );
94  if( rwork == NULL ) {
96  goto exit_level_2;
97  }
98  /* Query optimal working array(s) size */
99  info = LAPACKE_cggevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
100  lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
101  ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
102  rcondv, &work_query, lwork, rwork, iwork,
103  bwork );
104  if( info != 0 ) {
105  goto exit_level_3;
106  }
107  lwork = LAPACK_C2INT( work_query );
108  /* Allocate memory for work arrays */
109  work = (lapack_complex_float*)
110  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
111  if( work == NULL ) {
113  goto exit_level_3;
114  }
115  /* Call middle-level interface */
116  info = LAPACKE_cggevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
117  lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
118  ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
119  rcondv, work, lwork, rwork, iwork, bwork );
120  /* Release memory and exit */
121  LAPACKE_free( work );
122 exit_level_3:
123  LAPACKE_free( rwork );
124 exit_level_2:
125  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
126  LAPACKE_lsame( sense, 'v' ) ) {
127  LAPACKE_free( iwork );
128  }
129 exit_level_1:
130  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
131  LAPACKE_lsame( sense, 'v' ) ) {
132  LAPACKE_free( bwork );
133  }
134 exit_level_0:
135  if( info == LAPACK_WORK_MEMORY_ERROR ) {
136  LAPACKE_xerbla( "LAPACKE_cggevx", info );
137  }
138  return info;
139 }
#define lapack_logical
Definition: lapacke.h:51
lapack_int LAPACKE_cggevx_work(int matrix_layout, char balanc, char jobvl, char jobvr, char sense, lapack_int n, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, lapack_complex_float *alpha, lapack_complex_float *beta, lapack_complex_float *vl, lapack_int ldvl, lapack_complex_float *vr, lapack_int ldvr, lapack_int *ilo, lapack_int *ihi, float *lscale, float *rscale, float *abnrm, float *bbnrm, float *rconde, float *rcondv, lapack_complex_float *work, lapack_int lwork, float *rwork, lapack_int *iwork, lapack_logical *bwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_C2INT(x)
Definition: lapacke.h:116
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
Here is the call graph for this function: