LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgbsvx()

lapack_int LAPACKE_sgbsvx ( int  matrix_layout,
char  fact,
char  trans,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_int  nrhs,
float *  ab,
lapack_int  ldab,
float *  afb,
lapack_int  ldafb,
lapack_int ipiv,
char *  equed,
float *  r,
float *  c,
float *  b,
lapack_int  ldb,
float *  x,
lapack_int  ldx,
float *  rcond,
float *  ferr,
float *  berr,
float *  rpivot 
)

Definition at line 35 of file lapacke_sgbsvx.c.

43 {
44  lapack_int info = 0;
45  lapack_int* iwork = NULL;
46  float* work = NULL;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_sgbsvx", -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_sgb_nancheck( matrix_layout, n, n, kl, ku, ab, ldab ) ) {
55  return -8;
56  }
57  if( LAPACKE_lsame( fact, 'f' ) ) {
58  if( LAPACKE_sgb_nancheck( matrix_layout, n, n, kl, kl+ku, afb,
59  ldafb ) ) {
60  return -10;
61  }
62  }
63  if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
64  return -16;
65  }
66  if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
67  LAPACKE_lsame( *equed, 'c' ) ) ) {
68  if( LAPACKE_s_nancheck( n, c, 1 ) ) {
69  return -15;
70  }
71  }
72  if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
73  LAPACKE_lsame( *equed, 'r' ) ) ) {
74  if( LAPACKE_s_nancheck( n, r, 1 ) ) {
75  return -14;
76  }
77  }
78  }
79 #endif
80  /* Allocate memory for working array(s) */
81  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
82  if( iwork == NULL ) {
84  goto exit_level_0;
85  }
86  work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n) );
87  if( work == NULL ) {
89  goto exit_level_1;
90  }
91  /* Call middle-level interface */
92  info = LAPACKE_sgbsvx_work( matrix_layout, fact, trans, n, kl, ku, nrhs, ab,
93  ldab, afb, ldafb, ipiv, equed, r, c, b, ldb, x,
94  ldx, rcond, ferr, berr, work, iwork );
95  /* Backup significant data from working array(s) */
96  *rpivot = work[0];
97  /* Release memory and exit */
98  LAPACKE_free( work );
99 exit_level_1:
100  LAPACKE_free( iwork );
101 exit_level_0:
102  if( info == LAPACK_WORK_MEMORY_ERROR ) {
103  LAPACKE_xerbla( "LAPACKE_sgbsvx", info );
104  }
105  return info;
106 }
#define lapack_int
Definition: lapack.h:83
lapack_int LAPACKE_sgbsvx_work(int matrix_layout, char fact, char trans, lapack_int n, lapack_int kl, lapack_int ku, lapack_int nrhs, float *ab, lapack_int ldab, float *afb, lapack_int ldafb, lapack_int *ipiv, char *equed, float *r, float *c, float *b, lapack_int ldb, float *x, lapack_int ldx, float *rcond, float *ferr, float *berr, float *work, lapack_int *iwork)
#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
#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)
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
lapack_logical LAPACKE_sgb_nancheck(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const float *ab, lapack_int ldab)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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