LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sorgtr()

lapack_int LAPACKE_sorgtr ( int  matrix_layout,
char  uplo,
lapack_int  n,
float *  a,
lapack_int  lda,
const float *  tau 
)

Definition at line 35 of file lapacke_sorgtr.c.

37{
38 lapack_int info = 0;
39 lapack_int lwork = -1;
40 float* work = NULL;
41 float work_query;
42 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
43 LAPACKE_xerbla( "LAPACKE_sorgtr", -1 );
44 return -1;
45 }
46#ifndef LAPACK_DISABLE_NAN_CHECK
47 if( LAPACKE_get_nancheck() ) {
48 /* Optionally check input matrices for NaNs */
49 if( LAPACKE_ssy_nancheck( matrix_layout, uplo, n, a, lda ) ) {
50 return -4;
51 }
52 if( LAPACKE_s_nancheck( n-1, tau, 1 ) ) {
53 return -6;
54 }
55 }
56#endif
57 /* Query optimal working array(s) size */
58 info = LAPACKE_sorgtr_work( matrix_layout, uplo, n, a, lda, tau, &work_query,
59 lwork );
60 if( info != 0 ) {
61 goto exit_level_0;
62 }
63 lwork = (lapack_int)work_query;
64 /* Allocate memory for work arrays */
65 work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
66 if( work == NULL ) {
68 goto exit_level_0;
69 }
70 /* Call middle-level interface */
71 info = LAPACKE_sorgtr_work( matrix_layout, uplo, n, a, lda, tau, work,
72 lwork );
73 /* Release memory and exit */
74 LAPACKE_free( work );
75exit_level_0:
76 if( info == LAPACK_WORK_MEMORY_ERROR ) {
77 LAPACKE_xerbla( "LAPACKE_sorgtr", info );
78 }
79 return info;
80}
#define lapack_int
Definition: lapack.h:87
#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
lapack_int LAPACKE_sorgtr_work(int matrix_layout, char uplo, lapack_int n, float *a, lapack_int lda, const float *tau, float *work, lapack_int lwork)
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
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_ssy_nancheck(int matrix_layout, char uplo, lapack_int n, const float *a, lapack_int lda)
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