LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dspgvd_work()

lapack_int LAPACKE_dspgvd_work ( int  matrix_layout,
lapack_int  itype,
char  jobz,
char  uplo,
lapack_int  n,
double *  ap,
double *  bp,
double *  w,
double *  z,
lapack_int  ldz,
double *  work,
lapack_int  lwork,
lapack_int iwork,
lapack_int  liwork 
)

Definition at line 35 of file lapacke_dspgvd_work.c.

40{
41 lapack_int info = 0;
42 if( matrix_layout == LAPACK_COL_MAJOR ) {
43 /* Call LAPACK function and adjust info */
44 LAPACK_dspgvd( &itype, &jobz, &uplo, &n, ap, bp, w, z, &ldz, work,
45 &lwork, iwork, &liwork, &info );
46 if( info < 0 ) {
47 info = info - 1;
48 }
49 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50 lapack_int ldz_t = MAX(1,n);
51 double* z_t = NULL;
52 double* ap_t = NULL;
53 double* bp_t = NULL;
54 /* Check leading dimension(s) */
55 if( ldz < n ) {
56 info = -10;
57 LAPACKE_xerbla( "LAPACKE_dspgvd_work", info );
58 return info;
59 }
60 /* Query optimal working array(s) size if requested */
61 if( liwork == -1 || lwork == -1 ) {
62 LAPACK_dspgvd( &itype, &jobz, &uplo, &n, ap, bp, w, z, &ldz_t, work,
63 &lwork, iwork, &liwork, &info );
64 return (info < 0) ? (info - 1) : info;
65 }
66 /* Allocate memory for temporary array(s) */
67 if( LAPACKE_lsame( jobz, 'v' ) ) {
68 z_t = (double*)LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,n) );
69 if( z_t == NULL ) {
71 goto exit_level_0;
72 }
73 }
74 ap_t = (double*)
75 LAPACKE_malloc( sizeof(double) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
76 if( ap_t == NULL ) {
78 goto exit_level_1;
79 }
80 bp_t = (double*)
81 LAPACKE_malloc( sizeof(double) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
82 if( bp_t == NULL ) {
84 goto exit_level_2;
85 }
86 /* Transpose input matrices */
87 LAPACKE_dsp_trans( matrix_layout, uplo, n, ap, ap_t );
88 LAPACKE_dsp_trans( matrix_layout, uplo, n, bp, bp_t );
89 /* Call LAPACK function and adjust info */
90 LAPACK_dspgvd( &itype, &jobz, &uplo, &n, ap_t, bp_t, w, z_t, &ldz_t,
91 work, &lwork, iwork, &liwork, &info );
92 if( info < 0 ) {
93 info = info - 1;
94 }
95 /* Transpose output matrices */
96 if( LAPACKE_lsame( jobz, 'v' ) ) {
97 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
98 }
99 LAPACKE_dsp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
100 LAPACKE_dsp_trans( LAPACK_COL_MAJOR, uplo, n, bp_t, bp );
101 /* Release memory and exit */
102 LAPACKE_free( bp_t );
103exit_level_2:
104 LAPACKE_free( ap_t );
105exit_level_1:
106 if( LAPACKE_lsame( jobz, 'v' ) ) {
107 LAPACKE_free( z_t );
108 }
109exit_level_0:
110 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
111 LAPACKE_xerbla( "LAPACKE_dspgvd_work", info );
112 }
113 } else {
114 info = -1;
115 LAPACKE_xerbla( "LAPACKE_dspgvd_work", info );
116 }
117 return info;
118}
#define LAPACK_dspgvd(...)
Definition: lapack.h:15523
#define lapack_int
Definition: lapack.h:87
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_dsp_trans(int matrix_layout, char uplo, lapack_int n, const double *in, double *out)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
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