LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dlassq()

lapack_int LAPACKE_dlassq ( lapack_int  n,
double *  x,
lapack_int  incx,
double *  scale,
double *  sumsq 
)

Definition at line 36 of file lapacke_dlassq.c.

37 {
38 #ifndef LAPACK_DISABLE_NAN_CHECK
39  if( LAPACKE_get_nancheck() ) {
40  /* Optionally check input vector `x` and in/out scalars `scale` and `sumsq` for NaNs */
41  if( LAPACKE_d_nancheck( 1+(n-2)*ABS(incx), x, incx ) ) {
42  return -2;
43  }
44  if( LAPACKE_d_nancheck( 1, scale, 1 ) ) {
45  return -4;
46  }
47  if( LAPACKE_d_nancheck( 1, sumsq, 1 ) ) {
48  return -5;
49  }
50  }
51 #endif
52  return LAPACKE_dlassq_work( n, x, incx, scale, sumsq );
53 }
lapack_int LAPACKE_dlassq_work(lapack_int n, double *x, lapack_int incx, double *scale, double *sumsq)
int LAPACKE_get_nancheck()
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
#define ABS(x)
Definition: lapacke_utils.h:44
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