(S|D|C|Z|CS|ZD)SCAL¶

Single, double, single complex, double complex, single complex by single, and double complex by double SCAL.

Description¶

Scale the contents of a vector by a constant.

$X \assign \alpha X$

BLAS Interface¶

void sscal(const qml_long *N, const float *ALPHA, float *X,
           const qml_long *INCX);

void dscal(const qml_long *N, const double *ALPHA, double *X,
           const qml_long *INCX);

void cscal(const qml_long *N, const qml_single_complex *ALPHA,
           qml_single_complex *X, const qml_long *INCX);

void zscal(const qml_long *N, const qml_double_complex *ALPHA,
           qml_double_complex *X, const qml_long *INCX);

void csscal(const qml_long *N, const float *ALPHA, qml_single_complex *X,
            const qml_long *INCX);

void zdscal(const qml_long *N, const double *ALPHA, qml_double_complex *X,
            const qml_long *INCX) ;

CBLAS Interface¶

void cblas_sscal(const qml_long N, const float ALPHA, float *X,
                 const qml_long INCX);

void cblas_dscal(const qml_long N, const double ALPHA, double *X,
                 const qml_long INCX);

void cblas_cscal(const qml_long N, const qml_single_complex *ALPHA,
                 qml_single_complex *X, const qml_long INCX);

void cblas_zscal(const qml_long N, const qml_double_complex *ALPHA,
                 qml_double_complex *X, const qml_long INCX);

void cblas_csscal(const qml_long N, const float ALPHA, qml_single_complex *X,
                  const qml_long INCX);

void cblas_zdscal(const qml_long N, const double ALPHA,
                  qml_double_complex *X, const qml_long INCX);

Arguments¶

N	Number of elements to scale in X
ALPHA	Scale factor
X	Input vector, must be at least size: $(\fvar{N}-1)\mult\abs{\fvar{INCX}} + 1$
INCX	Distance between individual elements in X