LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_strexc()

lapack_int LAPACKE_strexc ( int  matrix_layout,
char  compq,
lapack_int  n,
float *  t,
lapack_int  ldt,
float *  q,
lapack_int  ldq,
lapack_int ifst,
lapack_int ilst 
)

Definition at line 36 of file lapacke_strexc.c.

39 {
40  lapack_int info = 0;
41  float* work = NULL;
42  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
43  LAPACKE_xerbla( "LAPACKE_strexc", -1 );
44  return -1;
45  }
46 #ifndef LAPACK_DISABLE_NAN_CHECK
47  /* Optionally check input matrices for NaNs */
48  if( LAPACKE_lsame( compq, 'v' ) ) {
49  if( LAPACKE_sge_nancheck( matrix_layout, n, n, q, ldq ) ) {
50  return -6;
51  }
52  }
53  if( LAPACKE_sge_nancheck( matrix_layout, n, n, t, ldt ) ) {
54  return -4;
55  }
56 #endif
57  /* Allocate memory for working array(s) */
58  work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) );
59  if( work == NULL ) {
61  goto exit_level_0;
62  }
63  /* Call middle-level interface */
64  info = LAPACKE_strexc_work( matrix_layout, compq, n, t, ldt, q, ldq, ifst,
65  ilst, work );
66  /* Release memory and exit */
67  LAPACKE_free( work );
68 exit_level_0:
69  if( info == LAPACK_WORK_MEMORY_ERROR ) {
70  LAPACKE_xerbla( "LAPACKE_strexc", info );
71  }
72  return info;
73 }
#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_int LAPACKE_strexc_work(int matrix_layout, char compq, lapack_int n, float *t, lapack_int ldt, float *q, lapack_int ldq, lapack_int *ifst, lapack_int *ilst, float *work)
#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)
#define lapack_int
Definition: lapacke.h:47
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