LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgtcon()

lapack_int LAPACKE_sgtcon ( char  norm,
lapack_int  n,
const float *  dl,
const float *  d,
const float *  du,
const float *  du2,
const lapack_int ipiv,
float  anorm,
float *  rcond 
)

Definition at line 36 of file lapacke_sgtcon.c.

39 {
40  lapack_int info = 0;
41  lapack_int* iwork = NULL;
42  float* work = NULL;
43 #ifndef LAPACK_DISABLE_NAN_CHECK
44  /* Optionally check input matrices for NaNs */
45  if( LAPACKE_s_nancheck( 1, &anorm, 1 ) ) {
46  return -8;
47  }
48  if( LAPACKE_s_nancheck( n, d, 1 ) ) {
49  return -4;
50  }
51  if( LAPACKE_s_nancheck( n-1, dl, 1 ) ) {
52  return -3;
53  }
54  if( LAPACKE_s_nancheck( n-1, du, 1 ) ) {
55  return -5;
56  }
57  if( LAPACKE_s_nancheck( n-2, du2, 1 ) ) {
58  return -6;
59  }
60 #endif
61  /* Allocate memory for working array(s) */
62  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
63  if( iwork == NULL ) {
65  goto exit_level_0;
66  }
67  work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*n) );
68  if( work == NULL ) {
70  goto exit_level_1;
71  }
72  /* Call middle-level interface */
73  info = LAPACKE_sgtcon_work( norm, n, dl, d, du, du2, ipiv, anorm, rcond,
74  work, iwork );
75  /* Release memory and exit */
76  LAPACKE_free( work );
77 exit_level_1:
78  LAPACKE_free( iwork );
79 exit_level_0:
80  if( info == LAPACK_WORK_MEMORY_ERROR ) {
81  LAPACKE_xerbla( "LAPACKE_sgtcon", info );
82  }
83  return info;
84 }
lapack_int LAPACKE_sgtcon_work(char norm, lapack_int n, const float *dl, const float *d, const float *du, const float *du2, const lapack_int *ipiv, float anorm, float *rcond, float *work, lapack_int *iwork)
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
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
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
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