LAPACK  3.6.1 LAPACK: Linear Algebra PACKage
 void LAPACKE_cgb_trans ( int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const lapack_complex_float * in, lapack_int ldin, lapack_complex_float * out, lapack_int ldout )

Definition at line 40 of file lapacke_cgb_trans.c.

44 {
45  lapack_int i, j;
46
47  if( in == NULL || out == NULL ) return;
48
49  if( matrix_layout == LAPACK_COL_MAJOR ) {
50  for( j = 0; j < MIN( ldout, n ); j++ ) {
51  for( i = MAX( ku-j, 0 ); i < MIN3( ldin, m+ku-j, kl+ku+1 );
52  i++ ) {
53  out[(size_t)i*ldout+j] = in[i+(size_t)j*ldin];
54  }
55  }
56  } else if ( matrix_layout == LAPACK_ROW_MAJOR ) {
57  /* TODO: interchange loops for performance.
58  * This is just reference impemeltation.
59  */
60  for( j = 0; j < MIN( n, ldin ); j++ ) {
61  for( i = MAX( ku-j, 0 ); i < MIN3( ldout, m+ku-j, kl+ku+1 );
62  i++ ) {
63  out[i+(size_t)j*ldout] = in[(size_t)i*ldin+j];
64  }
65  }
66  }
67 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define MIN3(x, y, z)
Definition: lapacke_utils.h:56
#define MIN(x, y)
Definition: lapacke_utils.h:50
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
#define lapack_int
Definition: lapacke.h:47

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