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lapacke_stfttr_work.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_stfttr_work (int matrix_order, char transr, char uplo, lapack_int n, const float *arf, float *a, lapack_int lda)

Function/Subroutine Documentation

lapack_int LAPACKE_stfttr_work ( int  matrix_order,
char  transr,
char  uplo,
lapack_int  n,
const float *  arf,
float *  a,
lapack_int  lda 
)

Definition at line 36 of file lapacke_stfttr_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_stfttr( &transr, &uplo, &n, arf, a, &lda, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,n);
float* a_t = NULL;
float* arf_t = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -7;
LAPACKE_xerbla( "LAPACKE_stfttr_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
if( a_t == NULL ) {
goto exit_level_0;
}
arf_t = (float*)
LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
if( arf_t == NULL ) {
goto exit_level_1;
}
/* Transpose input matrices */
LAPACKE_spf_trans( matrix_order, transr, uplo, n, arf, arf_t );
/* Call LAPACK function and adjust info */
LAPACK_stfttr( &transr, &uplo, &n, arf_t, a_t, &lda_t, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
/* Release memory and exit */
LAPACKE_free( arf_t );
exit_level_1:
LAPACKE_free( a_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_stfttr_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_stfttr_work", info );
}
return info;
}

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