LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgb_trans()

void LAPACKE_sgb_trans ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
const float *  in,
lapack_int  ldin,
float *  out,
lapack_int  ldout 
)

Definition at line 39 of file lapacke_sgb_trans.c.

43 {
44  lapack_int i, j;
45 
46  if( in == NULL || out == NULL ) return;
47 
48  if( matrix_layout == LAPACK_COL_MAJOR ) {
49  for( j = 0; j < MIN( ldout, n ); j++ ) {
50  for( i = MAX( ku-j, 0 ); i < MIN3( ldin, m+ku-j, kl+ku+1 );
51  i++ ) {
52  out[(size_t)i*ldout+j] = in[i+(size_t)j*ldin];
53  }
54  }
55  } else if ( matrix_layout == LAPACK_ROW_MAJOR ) {
56  /* TODO: interchange loops for performance.
57  * This is just reference impemeltation.
58  */
59  for( j = 0; j < MIN( n, ldin ); j++ ) {
60  for( i = MAX( ku-j, 0 ); i < MIN3( ldout, m+ku-j, kl+ku+1 );
61  i++ ) {
62  out[i+(size_t)j*ldout] = in[(size_t)i*ldin+j];
63  }
64  }
65  }
66 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define MIN(x, y)
Definition: lapacke_utils.h:49
#define MAX(x, y)
Definition: lapacke_utils.h:46
#define MIN3(x, y, z)
Definition: lapacke_utils.h:55
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