LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sgtsvx()

lapack_int LAPACKE_sgtsvx ( int  matrix_layout,
char  fact,
char  trans,
lapack_int  n,
lapack_int  nrhs,
const float *  dl,
const float *  d,
const float *  du,
float *  dlf,
float *  df,
float *  duf,
float *  du2,
lapack_int ipiv,
const float *  b,
lapack_int  ldb,
float *  x,
lapack_int  ldx,
float *  rcond,
float *  ferr,
float *  berr 
)

Definition at line 35 of file lapacke_sgtsvx.c.

42{
43 lapack_int info = 0;
44 lapack_int* iwork = NULL;
45 float* work = NULL;
46 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47 LAPACKE_xerbla( "LAPACKE_sgtsvx", -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_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
54 return -14;
55 }
56 if( LAPACKE_s_nancheck( n, d, 1 ) ) {
57 return -7;
58 }
59 if( LAPACKE_lsame( fact, 'f' ) ) {
60 if( LAPACKE_s_nancheck( n, df, 1 ) ) {
61 return -10;
62 }
63 }
64 if( LAPACKE_s_nancheck( n-1, dl, 1 ) ) {
65 return -6;
66 }
67 if( LAPACKE_lsame( fact, 'f' ) ) {
68 if( LAPACKE_s_nancheck( n-1, dlf, 1 ) ) {
69 return -9;
70 }
71 }
72 if( LAPACKE_s_nancheck( n-1, du, 1 ) ) {
73 return -8;
74 }
75 if( LAPACKE_lsame( fact, 'f' ) ) {
76 if( LAPACKE_s_nancheck( n-2, du2, 1 ) ) {
77 return -12;
78 }
79 }
80 if( LAPACKE_lsame( fact, 'f' ) ) {
81 if( LAPACKE_s_nancheck( n-1, duf, 1 ) ) {
82 return -11;
83 }
84 }
85 }
86#endif
87 /* Allocate memory for working array(s) */
88 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
89 if( iwork == NULL ) {
91 goto exit_level_0;
92 }
93 work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n) );
94 if( work == NULL ) {
96 goto exit_level_1;
97 }
98 /* Call middle-level interface */
99 info = LAPACKE_sgtsvx_work( matrix_layout, fact, trans, n, nrhs, dl, d, du,
100 dlf, df, duf, du2, ipiv, b, ldb, x, ldx, rcond,
101 ferr, berr, work, iwork );
102 /* Release memory and exit */
103 LAPACKE_free( work );
104exit_level_1:
105 LAPACKE_free( iwork );
106exit_level_0:
107 if( info == LAPACK_WORK_MEMORY_ERROR ) {
108 LAPACKE_xerbla( "LAPACKE_sgtsvx", info );
109 }
110 return info;
111}
#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_sgtsvx_work(int matrix_layout, char fact, char trans, lapack_int n, lapack_int nrhs, const float *dl, const float *d, const float *du, float *dlf, float *df, float *duf, float *du2, lapack_int *ipiv, const float *b, lapack_int ldb, float *x, lapack_int ldx, float *rcond, float *ferr, float *berr, float *work, lapack_int *iwork)
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
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_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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