LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_strexc.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_strexc (int matrix_order, char compq, lapack_int n, float *t, lapack_int ldt, float *q, lapack_int ldq, lapack_int *ifst, lapack_int *ilst)

Function/Subroutine Documentation

lapack_int LAPACKE_strexc ( int  matrix_order,
char  compq,
lapack_int  n,
float *  t,
lapack_int  ldt,
float *  q,
lapack_int  ldq,
lapack_int ifst,
lapack_int ilst 
)

Definition at line 36 of file lapacke_strexc.c.

{
lapack_int info = 0;
float* work = NULL;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_strexc", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_lsame( compq, 'v' ) ) {
if( LAPACKE_sge_nancheck( matrix_order, n, n, q, ldq ) ) {
return -6;
}
}
if( LAPACKE_sge_nancheck( matrix_order, n, n, t, ldt ) ) {
return -4;
}
#endif
/* Allocate memory for working array(s) */
work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) );
if( work == NULL ) {
goto exit_level_0;
}
/* Call middle-level interface */
info = LAPACKE_strexc_work( matrix_order, compq, n, t, ldt, q, ldq, ifst,
ilst, work );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_strexc", info );
}
return info;
}

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