LAPACK  3.10.1
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 35 of file lapacke_cggevx.c.

45 {
46  lapack_int info = 0;
47  lapack_int lwork = -1;
48  /* Additional scalars declarations for work arrays */
49  lapack_int lrwork;
50  lapack_logical* bwork = NULL;
51  lapack_int* iwork = NULL;
52  float* rwork = NULL;
53  lapack_complex_float* work = NULL;
54  lapack_complex_float work_query;
55  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
56  LAPACKE_xerbla( "LAPACKE_cggevx", -1 );
57  return -1;
58  }
59 #ifndef LAPACK_DISABLE_NAN_CHECK
60  if( LAPACKE_get_nancheck() ) {
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  }
69 #endif
70  /* Additional scalars initializations for work arrays */
71  if( LAPACKE_lsame( balanc, 's' ) || LAPACKE_lsame( balanc, 'b' ) ) {
72  lrwork = MAX(1,6*n);
73  } else {
74  lrwork = MAX(1,2*n);
75  }
76  /* Allocate memory for working array(s) */
77  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
78  LAPACKE_lsame( sense, 'v' ) ) {
79  bwork = (lapack_logical*)
80  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
81  if( bwork == NULL ) {
83  goto exit_level_0;
84  }
85  }
86  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
87  LAPACKE_lsame( sense, 'v' ) ) {
88  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n+2) );
89  if( iwork == NULL ) {
91  goto exit_level_1;
92  }
93  }
94  rwork = (float*)LAPACKE_malloc( sizeof(float) * lrwork );
95  if( rwork == NULL ) {
97  goto exit_level_2;
98  }
99  /* Query optimal working array(s) size */
100  info = LAPACKE_cggevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
101  lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
102  ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
103  rcondv, &work_query, lwork, rwork, iwork,
104  bwork );
105  if( info != 0 ) {
106  goto exit_level_3;
107  }
108  lwork = LAPACK_C2INT( work_query );
109  /* Allocate memory for work arrays */
110  work = (lapack_complex_float*)
111  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
112  if( work == NULL ) {
114  goto exit_level_3;
115  }
116  /* Call middle-level interface */
117  info = LAPACKE_cggevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
118  lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
119  ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
120  rcondv, work, lwork, rwork, iwork, bwork );
121  /* Release memory and exit */
122  LAPACKE_free( work );
123 exit_level_3:
124  LAPACKE_free( rwork );
125 exit_level_2:
126  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
127  LAPACKE_lsame( sense, 'v' ) ) {
128  LAPACKE_free( iwork );
129  }
130 exit_level_1:
131  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
132  LAPACKE_lsame( sense, 'v' ) ) {
133  LAPACKE_free( bwork );
134  }
135 exit_level_0:
136  if( info == LAPACK_WORK_MEMORY_ERROR ) {
137  LAPACKE_xerbla( "LAPACKE_cggevx", info );
138  }
139  return info;
140 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
#define lapack_logical
Definition: lapack.h:87
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_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACK_C2INT(x)
Definition: lapacke.h:49
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
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
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
Here is the call graph for this function: