MB_DSCAL – Scales a vector by a constant

Block SymbolLicensing group: STANDARD

Function Description
The output references yX is always set to the corresponding input reference uX. If HLD = on then nothing is computed otherwise the BLAS function DSCAL is called internally:

DSCAL(N, a, uX, INCX);

where parameters of DSCAL are set in the following way:

If the input $n > 0$ then N is set to n else N is set to the current number of the vector or matrix elements CNT referenced by uX.
If the input $incx \neq 0$ then INCX is set to incx else INCX is set to $1$ .

The error flag E is set to on if:

the reference uX is not defined (i.e. input uX is not connected),
$n < 0$ or $incx < 0$ ,
$(N - 1) * INCX + 1 > CNT$ .

See BLAS documentation [7] for more details.

Inputs

uX	Input reference to vector x	Reference
a	Scalar coefficient a	Double (F64)
n	Number of processed vector elements	Long (I32)
incx	Index increment of vector x	Long (I32)
HLD	Hold	Bool

Outputs

yX	Output reference to vector x	Reference
E	Error indicator	Bool

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