LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgbrfsx()

lapack_int LAPACKE_sgbrfsx ( int  matrix_layout,
char  trans,
char  equed,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_int  nrhs,
const float *  ab,
lapack_int  ldab,
const float *  afb,
lapack_int  ldafb,
const lapack_int ipiv,
const float *  r,
const float *  c,
const float *  b,
lapack_int  ldb,
float *  x,
lapack_int  ldx,
float *  rcond,
float *  berr,
lapack_int  n_err_bnds,
float *  err_bnds_norm,
float *  err_bnds_comp,
lapack_int  nparams,
float *  params 
)

Definition at line 36 of file lapacke_sgbrfsx.c.

46 {
47  lapack_int info = 0;
48  lapack_int* iwork = NULL;
49  float* work = NULL;
50  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
51  LAPACKE_xerbla( "LAPACKE_sgbrfsx", -1 );
52  return -1;
53  }
54 #ifndef LAPACK_DISABLE_NAN_CHECK
55  if( LAPACKE_get_nancheck() ) {
56  /* Optionally check input matrices for NaNs */
57  if( LAPACKE_sgb_nancheck( matrix_layout, n, n, kl, ku, ab, ldab ) ) {
58  return -8;
59  }
60  if( LAPACKE_sgb_nancheck( matrix_layout, n, n, kl, kl+ku, afb, ldafb ) ) {
61  return -10;
62  }
63  if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
64  return -15;
65  }
66  if( LAPACKE_lsame( equed, 'b' ) || LAPACKE_lsame( equed, 'c' ) ) {
67  if( LAPACKE_s_nancheck( n, c, 1 ) ) {
68  return -14;
69  }
70  }
71  if( nparams>0 ) {
72  if( LAPACKE_s_nancheck( nparams, params, 1 ) ) {
73  return -25;
74  }
75  }
76  if( LAPACKE_lsame( equed, 'b' ) || LAPACKE_lsame( equed, 'r' ) ) {
77  if( LAPACKE_s_nancheck( n, r, 1 ) ) {
78  return -13;
79  }
80  }
81  if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
82  return -17;
83  }
84  }
85 #endif
86  /* Allocate memory for working array(s) */
87  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
88  if( iwork == NULL ) {
90  goto exit_level_0;
91  }
92  work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,4*n) );
93  if( work == NULL ) {
95  goto exit_level_1;
96  }
97  /* Call middle-level interface */
98  info = LAPACKE_sgbrfsx_work( matrix_layout, trans, equed, n, kl, ku, nrhs,
99  ab, ldab, afb, ldafb, ipiv, r, c, b, ldb, x,
100  ldx, rcond, berr, n_err_bnds, err_bnds_norm,
101  err_bnds_comp, nparams, params, work, iwork );
102  /* Release memory and exit */
103  LAPACKE_free( work );
104 exit_level_1:
105  LAPACKE_free( iwork );
106 exit_level_0:
107  if( info == LAPACK_WORK_MEMORY_ERROR ) {
108  LAPACKE_xerbla( "LAPACKE_sgbrfsx", info );
109  }
110  return info;
111 }
#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_sgbrfsx_work(int matrix_layout, char trans, char equed, lapack_int n, lapack_int kl, lapack_int ku, lapack_int nrhs, const float *ab, lapack_int ldab, const float *afb, lapack_int ldafb, const lapack_int *ipiv, const float *r, const float *c, const float *b, lapack_int ldb, float *x, lapack_int ldx, float *rcond, float *berr, lapack_int n_err_bnds, float *err_bnds_norm, float *err_bnds_comp, lapack_int nparams, float *params, float *work, lapack_int *iwork)
int LAPACKE_get_nancheck()
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