LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_zpprfs_work()

lapack_int LAPACKE_zpprfs_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_double ap,
const lapack_complex_double afp,
const lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double x,
lapack_int  ldx,
double *  ferr,
double *  berr,
lapack_complex_double work,
double *  rwork 
)

Definition at line 35 of file lapacke_zpprfs_work.c.

43{
44 lapack_int info = 0;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_zpprfs( &uplo, &n, &nrhs, ap, afp, b, &ldb, x, &ldx, ferr, berr,
48 work, rwork, &info );
49 if( info < 0 ) {
50 info = info - 1;
51 }
52 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53 lapack_int ldb_t = MAX(1,n);
54 lapack_int ldx_t = MAX(1,n);
55 lapack_complex_double* b_t = NULL;
56 lapack_complex_double* x_t = NULL;
57 lapack_complex_double* ap_t = NULL;
58 lapack_complex_double* afp_t = NULL;
59 /* Check leading dimension(s) */
60 if( ldb < nrhs ) {
61 info = -8;
62 LAPACKE_xerbla( "LAPACKE_zpprfs_work", info );
63 return info;
64 }
65 if( ldx < nrhs ) {
66 info = -10;
67 LAPACKE_xerbla( "LAPACKE_zpprfs_work", info );
68 return info;
69 }
70 /* Allocate memory for temporary array(s) */
73 ldb_t * MAX(1,nrhs) );
74 if( b_t == NULL ) {
76 goto exit_level_0;
77 }
80 ldx_t * MAX(1,nrhs) );
81 if( x_t == NULL ) {
83 goto exit_level_1;
84 }
85 ap_t = (lapack_complex_double*)
87 ( MAX(1,n) * MAX(2,n+1) ) / 2 );
88 if( ap_t == NULL ) {
90 goto exit_level_2;
91 }
92 afp_t = (lapack_complex_double*)
94 ( MAX(1,n) * MAX(2,n+1) ) / 2 );
95 if( afp_t == NULL ) {
97 goto exit_level_3;
98 }
99 /* Transpose input matrices */
100 LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
101 LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
102 LAPACKE_zpp_trans( matrix_layout, uplo, n, ap, ap_t );
103 LAPACKE_zpp_trans( matrix_layout, uplo, n, afp, afp_t );
104 /* Call LAPACK function and adjust info */
105 LAPACK_zpprfs( &uplo, &n, &nrhs, ap_t, afp_t, b_t, &ldb_t, x_t, &ldx_t,
106 ferr, berr, work, rwork, &info );
107 if( info < 0 ) {
108 info = info - 1;
109 }
110 /* Transpose output matrices */
111 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
112 /* Release memory and exit */
113 LAPACKE_free( afp_t );
114exit_level_3:
115 LAPACKE_free( ap_t );
116exit_level_2:
117 LAPACKE_free( x_t );
118exit_level_1:
119 LAPACKE_free( b_t );
120exit_level_0:
121 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
122 LAPACKE_xerbla( "LAPACKE_zpprfs_work", info );
123 }
124 } else {
125 info = -1;
126 LAPACKE_xerbla( "LAPACKE_zpprfs_work", info );
127 }
128 return info;
129}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_zpprfs(...)
Definition: lapack.h:13880
#define lapack_complex_double
Definition: lapack.h:64
#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
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
void LAPACKE_zpp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_complex_double *out)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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