LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgbrfs()

lapack_int LAPACKE_cgbrfs ( int  matrix_layout,
char  trans,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_int  nrhs,
const lapack_complex_float ab,
lapack_int  ldab,
const lapack_complex_float afb,
lapack_int  ldafb,
const lapack_int ipiv,
const lapack_complex_float b,
lapack_int  ldb,
lapack_complex_float x,
lapack_int  ldx,
float *  ferr,
float *  berr 
)

Definition at line 35 of file lapacke_cgbrfs.c.

43 {
44  lapack_int info = 0;
45  float* rwork = NULL;
46  lapack_complex_float* work = NULL;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_cgbrfs", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  if( LAPACKE_get_nancheck() ) {
53  /* Optionally check input matrices for NaNs */
54  if( LAPACKE_cgb_nancheck( matrix_layout, n, n, kl, ku, ab, ldab ) ) {
55  return -7;
56  }
57  if( LAPACKE_cgb_nancheck( matrix_layout, n, n, kl, kl+ku, afb, ldafb ) ) {
58  return -9;
59  }
60  if( LAPACKE_cge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
61  return -12;
62  }
63  if( LAPACKE_cge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
64  return -14;
65  }
66  }
67 #endif
68  /* Allocate memory for working array(s) */
69  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) );
70  if( rwork == NULL ) {
72  goto exit_level_0;
73  }
74  work = (lapack_complex_float*)
75  LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,2*n) );
76  if( work == NULL ) {
78  goto exit_level_1;
79  }
80  /* Call middle-level interface */
81  info = LAPACKE_cgbrfs_work( matrix_layout, trans, n, kl, ku, nrhs, ab, ldab,
82  afb, ldafb, ipiv, b, ldb, x, ldx, ferr, berr,
83  work, rwork );
84  /* Release memory and exit */
85  LAPACKE_free( work );
86 exit_level_1:
87  LAPACKE_free( rwork );
88 exit_level_0:
89  if( info == LAPACK_WORK_MEMORY_ERROR ) {
90  LAPACKE_xerbla( "LAPACKE_cgbrfs", info );
91  }
92  return info;
93 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
lapack_int LAPACKE_cgbrfs_work(int matrix_layout, char trans, lapack_int n, lapack_int kl, lapack_int ku, lapack_int nrhs, const lapack_complex_float *ab, lapack_int ldab, const lapack_complex_float *afb, lapack_int ldafb, const lapack_int *ipiv, const lapack_complex_float *b, lapack_int ldb, lapack_complex_float *x, lapack_int ldx, float *ferr, float *berr, lapack_complex_float *work, float *rwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_cgb_nancheck(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const lapack_complex_float *ab, lapack_int ldab)
#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)
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