LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sgesvx()

lapack_int LAPACKE_sgesvx ( int  matrix_layout,
char  fact,
char  trans,
lapack_int  n,
lapack_int  nrhs,
float *  a,
lapack_int  lda,
float *  af,
lapack_int  ldaf,
lapack_int ipiv,
char *  equed,
float *  r,
float *  c,
float *  b,
lapack_int  ldb,
float *  x,
lapack_int  ldx,
float *  rcond,
float *  ferr,
float *  berr,
float *  rpivot 
)

Definition at line 35 of file lapacke_sgesvx.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_sgesvx", -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, n, a, lda ) ) {
54 return -6;
55 }
56 if( LAPACKE_lsame( fact, 'f' ) ) {
57 if( LAPACKE_sge_nancheck( matrix_layout, n, n, af, ldaf ) ) {
58 return -8;
59 }
60 }
61 if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
62 return -14;
63 }
64 if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
65 LAPACKE_lsame( *equed, 'c' ) ) ) {
66 if( LAPACKE_s_nancheck( n, c, 1 ) ) {
67 return -13;
68 }
69 }
70 if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
71 LAPACKE_lsame( *equed, 'r' ) ) ) {
72 if( LAPACKE_s_nancheck( n, r, 1 ) ) {
73 return -12;
74 }
75 }
76 }
77#endif
78 /* Allocate memory for working array(s) */
79 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
80 if( iwork == NULL ) {
82 goto exit_level_0;
83 }
84 work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,4*n) );
85 if( work == NULL ) {
87 goto exit_level_1;
88 }
89 /* Call middle-level interface */
90 info = LAPACKE_sgesvx_work( matrix_layout, fact, trans, n, nrhs, a, lda, af,
91 ldaf, ipiv, equed, r, c, b, ldb, x, ldx, rcond,
92 ferr, berr, work, iwork );
93 /* Backup significant data from working array(s) */
94 *rpivot = work[0];
95 /* Release memory and exit */
96 LAPACKE_free( work );
97exit_level_1:
98 LAPACKE_free( iwork );
99exit_level_0:
100 if( info == LAPACK_WORK_MEMORY_ERROR ) {
101 LAPACKE_xerbla( "LAPACKE_sgesvx", info );
102 }
103 return info;
104}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
lapack_int LAPACKE_sgesvx_work(int matrix_layout, char fact, char trans, lapack_int n, lapack_int nrhs, float *a, lapack_int lda, float *af, lapack_int ldaf, lapack_int *ipiv, char *equed, float *r, float *c, float *b, lapack_int ldb, float *x, lapack_int ldx, float *rcond, float *ferr, float *berr, float *work, lapack_int *iwork)
#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
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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