nag_dload (f16fbc) (PDF version)
f16 Chapter Contents
f16 Chapter Introduction
NAG C Library Manual

NAG Library Function Document

nag_dload (f16fbc)

+ Contents

    1  Purpose
    7  Accuracy

1  Purpose

nag_dload (f16fbc) broadcasts a scalar into a real vector.

2  Specification

#include <nag.h>
#include <nagf16.h>
void  nag_dload (Integer n, double alpha, double x[], Integer incx, NagError *fail)

3  Description

nag_dload (f16fbc) performs the operation
x α,α,,αT ,
where x is an n-element real vector and α is a real scalar.

4  References

The BLAS Technical Forum Standard (2001) http://www.netlib.org/blas/blast-forum

5  Arguments

1:     nIntegerInput
On entry: n, the number of elements in x.
Constraint: n0.
2:     alphadoubleInput
On entry: the scalar α.
3:     x[dim]doubleOutput
Note: the dimension, dim, of the array x must be at least max1,1+n-1incx.
On exit: the scalar α is scattered with a stride of incx in x. Intermediate elements of x are unchanged.
4:     incxIntegerInput
On entry: the increment in the subscripts of x between successive elements of x.
Constraint: incx0.
5:     failNagError *Input/Output
The NAG error argument (see Section 3.6 in the Essential Introduction).

6  Error Indicators and Warnings

NE_BAD_PARAM
On entry, argument value had an illegal value.
NE_INT
On entry, incx=value.
Constraint: incx0.
On entry, n=value.
Constraint: n0.

7  Accuracy

Not applicable.

8  Further Comments

None.

9  Example

This example initializes four elements of a real vector, x, with increment 2, with the value α=0.3.

9.1  Program Text

Program Text (f16fbce.c)

9.2  Program Data

Program Data (f16fbce.d)

9.3  Program Results

Program Results (f16fbce.r)


nag_dload (f16fbc) (PDF version)
f16 Chapter Contents
f16 Chapter Introduction
NAG C Library Manual

© The Numerical Algorithms Group Ltd, Oxford, UK. 2012