lapack_int LAPACKE_dsbev( int matrix_order, char jobz, char uplo, lapack_int n,
lapack_int kd, double* ab, lapack_int ldab, double* w,
double* z, lapack_int ldz )
{
lapack_int info = 0;
double* work = NULL;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_dsbev", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_dsb_nancheck( matrix_order, uplo, n, kd, ab, ldab ) ) {
return -6;
}
#endif
/* Allocate memory for working array(s) */
work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n-2) );
if( work == NULL ) {
info = LAPACK_WORK_MEMORY_ERROR;
goto exit_level_0;
}
/* Call middle-level interface */
info = LAPACKE_dsbev_work( matrix_order, jobz, uplo, n, kd, ab, ldab, w, z,
ldz, work );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dsbev", info );
}
return info;
}
lapack_int LAPACKE_dsbevx( int matrix_layout, char jobz, char range, char uplo,
lapack_int n, lapack_int kd, double* ab,
lapack_int ldab, double* q, lapack_int ldq,
double vl, double vu, lapack_int il, lapack_int iu,
double abstol, lapack_int* m, double* w, double* z,
lapack_int ldz, lapack_int* ifail )
{
lapack_int info = 0;
lapack_int* iwork = NULL;
double* work = NULL;
if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_dsbevx", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_dsb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
return -7;
}
if( LAPACKE_d_nancheck( 1, &abstol, 1 ) ) {
return -15;
}
if( LAPACKE_lsame( range, 'v' ) ) {
if( LAPACKE_d_nancheck( 1, &vl, 1 ) ) {
return -11;
}
}
if( LAPACKE_lsame( range, 'v' ) ) {
if( LAPACKE_d_nancheck( 1, &vu, 1 ) ) {
return -12;
}
}
#endif
/* Allocate memory for working array(s) */
iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
if( iwork == NULL ) {
info = LAPACK_WORK_MEMORY_ERROR;
goto exit_level_0;
}
work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,7*n) );
if( work == NULL ) {
info = LAPACK_WORK_MEMORY_ERROR;
goto exit_level_1;
}
/* Call middle-level interface */
info = LAPACKE_dsbevx_work( matrix_layout, jobz, range, uplo, n, kd, ab,
ldab, q, ldq, vl, vu, il, iu, abstol, m, w, z,
ldz, work, iwork, ifail );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_1:
LAPACKE_free( iwork );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dsbevx", info );
}
return info;
}
lapack_int LAPACKE_dsbgst( int matrix_layout, char vect, char uplo, lapack_int n,
lapack_int ka, lapack_int kb, double* ab,
lapack_int ldab, const double* bb, lapack_int ldbb,
double* x, lapack_int ldx )
{
lapack_int info = 0;
double* work = NULL;
if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_dsbgst", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_dsb_nancheck( matrix_layout, uplo, n, ka, ab, ldab ) ) {
return -7;
}
if( LAPACKE_dsb_nancheck( matrix_layout, uplo, n, kb, bb, ldbb ) ) {
return -9;
}
#endif
/* Allocate memory for working array(s) */
work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
if( work == NULL ) {
info = LAPACK_WORK_MEMORY_ERROR;
goto exit_level_0;
}
/* Call middle-level interface */
info = LAPACKE_dsbgst_work( matrix_layout, vect, uplo, n, ka, kb, ab, ldab,
bb, ldbb, x, ldx, work );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dsbgst", info );
}
return info;
}
lapack_int LAPACKE_dsbev_2stage( int matrix_layout, char jobz, char uplo, lapack_int n,
lapack_int kd, double* ab, lapack_int ldab, double* w,
double* z, lapack_int ldz )
{
lapack_int info = 0;
lapack_int lwork = -1;
double* work = NULL;
double work_query;
if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_dsbev_2stage", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_dsb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
return -6;
}
#endif
/* Query optimal working array(s) size */
info = LAPACKE_dsbev_2stage_work( matrix_layout, jobz, uplo, n, kd, ab, ldab, w, z,
ldz, &work_query, lwork );
if( info != 0 ) {
goto exit_level_0;
}
lwork = (lapack_int)work_query;
/* Allocate memory for working array(s) */
work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
if( work == NULL ) {
info = LAPACK_WORK_MEMORY_ERROR;
goto exit_level_0;
}
/* Call middle-level interface */
info = LAPACKE_dsbev_2stage_work( matrix_layout, jobz, uplo, n, kd, ab, ldab, w, z,
ldz, work, lwork );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dsbev_2stage", info );
}
return info;
}
lapack_int LAPACKE_dlascl( int matrix_layout, char type, lapack_int kl,
lapack_int ku, double cfrom, double cto,
lapack_int m, lapack_int n, double* a,
lapack_int lda )
{
if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_dlascl", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
switch (type) {
case 'G':
if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
return -9;
}
break;
case 'L':
// TYPE = 'L' - lower triangle of general matrix
if( matrix_layout == LAPACK_COL_MAJOR &&
LAPACKE_dgb_nancheck( matrix_layout, m, n, m-1, 0, a, lda+1 ) ) {
return -9;
}
if( matrix_layout == LAPACK_ROW_MAJOR &&
LAPACKE_dgb_nancheck( LAPACK_COL_MAJOR, n, m, 0, m-1, a-m+1, lda+1 ) ) {
return -9;
}
break;
case 'U':
// TYPE = 'U' - upper triangle of general matrix
if( matrix_layout == LAPACK_COL_MAJOR &&
LAPACKE_dgb_nancheck( matrix_layout, m, n, 0, n-1, a-n+1, lda+1 ) ) {
return -9;
}
if( matrix_layout == LAPACK_ROW_MAJOR &&
LAPACKE_dgb_nancheck( LAPACK_COL_MAJOR, n, m, n-1, 0, a, lda+1 ) ) {
return -9;
}
break;
case 'H':
// TYPE = 'H' - part of upper Hessenberg matrix in general matrix
if( matrix_layout == LAPACK_COL_MAJOR &&
LAPACKE_dgb_nancheck( matrix_layout, m, n, 1, n-1, a-n+1, lda+1 ) ) {
return -9;
}
if( matrix_layout == LAPACK_ROW_MAJOR &&
LAPACKE_dgb_nancheck( LAPACK_COL_MAJOR, n, m, n-1, 1, a-1, lda+1 ) ) {
return -9;
}
case 'B':
// TYPE = 'B' - lower part of symmetric band matrix (assume m==n)
if( LAPACKE_dsb_nancheck( matrix_layout, 'L', n, kl, a, lda ) ) {
return -9;
}
break;
case 'Q':
// TYPE = 'Q' - upper part of symmetric band matrix (assume m==n)
if( LAPACKE_dsb_nancheck( matrix_layout, 'U', n, ku, a, lda ) ) {
return -9;
}
break;
case 'Z':
// TYPE = 'Z' - band matrix laid out for ?GBTRF
if( matrix_layout == LAPACK_COL_MAJOR &&
LAPACKE_dgb_nancheck( matrix_layout, m, n, kl, ku, a+kl, lda ) ) {
return -9;
}
if( matrix_layout == LAPACK_ROW_MAJOR &&
LAPACKE_dgb_nancheck( matrix_layout, m, n, kl, ku, a+lda*kl, lda ) ) {
return -9;
}
break;
}
#endif
return LAPACKE_dlascl_work( matrix_layout, type, kl, ku, cfrom, cto, m, n, a, lda );
}
