LAPACK  3.7.1
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 36 of file lapacke_sgbsvx.c.

44 {
45  lapack_int info = 0;
46  lapack_int* iwork = NULL;
47  float* work = NULL;
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_sgbsvx", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
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 #endif
79  /* Allocate memory for working array(s) */
80  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
81  if( iwork == NULL ) {
83  goto exit_level_0;
84  }
85  work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n) );
86  if( work == NULL ) {
88  goto exit_level_1;
89  }
90  /* Call middle-level interface */
91  info = LAPACKE_sgbsvx_work( matrix_layout, fact, trans, n, kl, ku, nrhs, ab,
92  ldab, afb, ldafb, ipiv, equed, r, c, b, ldb, x,
93  ldx, rcond, ferr, berr, work, iwork );
94  /* Backup significant data from working array(s) */
95  *rpivot = work[0];
96  /* Release memory and exit */
97  LAPACKE_free( work );
98 exit_level_1:
99  LAPACKE_free( iwork );
100 exit_level_0:
101  if( info == LAPACK_WORK_MEMORY_ERROR ) {
102  LAPACKE_xerbla( "LAPACKE_sgbsvx", info );
103  }
104  return info;
105 }
#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
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
#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)
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 lapack_int
Definition: lapacke.h:47
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)
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