LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_cgelsy()

lapack_int LAPACKE_cgelsy ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_int  nrhs,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb,
lapack_int jpvt,
float  rcond,
lapack_int rank 
)

Definition at line 35 of file lapacke_cgelsy.c.

40{
41 lapack_int info = 0;
42 lapack_int lwork = -1;
43 float* rwork = NULL;
44 lapack_complex_float* work = NULL;
45 lapack_complex_float work_query;
46 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47 LAPACKE_xerbla( "LAPACKE_cgelsy", -1 );
48 return -1;
49 }
50#ifndef LAPACK_DISABLE_NAN_CHECK
51 if( LAPACKE_get_nancheck() ) {
52 /* Optionally check input matrices for NaNs */
53 if( LAPACKE_cge_nancheck( matrix_layout, m, n, a, lda ) ) {
54 return -5;
55 }
56 if( LAPACKE_cge_nancheck( matrix_layout, MAX(m,n), nrhs, b, ldb ) ) {
57 return -7;
58 }
59 if( LAPACKE_s_nancheck( 1, &rcond, 1 ) ) {
60 return -10;
61 }
62 }
63#endif
64 /* Allocate memory for working array(s) */
65 rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*n) );
66 if( rwork == NULL ) {
68 goto exit_level_0;
69 }
70 /* Query optimal working array(s) size */
71 info = LAPACKE_cgelsy_work( matrix_layout, m, n, nrhs, a, lda, b, ldb, jpvt,
72 rcond, rank, &work_query, lwork, rwork );
73 if( info != 0 ) {
74 goto exit_level_1;
75 }
76 lwork = LAPACK_C2INT( work_query );
77 /* Allocate memory for work arrays */
78 work = (lapack_complex_float*)
79 LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
80 if( work == NULL ) {
82 goto exit_level_1;
83 }
84 /* Call middle-level interface */
85 info = LAPACKE_cgelsy_work( matrix_layout, m, n, nrhs, a, lda, b, ldb, jpvt,
86 rcond, rank, work, lwork, rwork );
87 /* Release memory and exit */
88 LAPACKE_free( work );
89exit_level_1:
90 LAPACKE_free( rwork );
91exit_level_0:
92 if( info == LAPACK_WORK_MEMORY_ERROR ) {
93 LAPACKE_xerbla( "LAPACKE_cgelsy", info );
94 }
95 return info;
96}
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_float
Definition: lapack.h:46
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACK_C2INT(x)
Definition: lapacke.h:49
lapack_int LAPACKE_cgelsy_work(int matrix_layout, lapack_int m, lapack_int n, lapack_int nrhs, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, lapack_int *jpvt, float rcond, lapack_int *rank, lapack_complex_float *work, lapack_int lwork, float *rwork)
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
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