IntelĀ® oneAPI Math Kernel Library Developer Reference - C
Computes a vector-scalar product and adds the result to a vector.
void cblas_saxpy (const MKL_INT n, const float a, const float *x, const MKL_INT incx, float *y, const MKL_INT incy);
void cblas_daxpy (const MKL_INT n, const double a, const double *x, const MKL_INT incx, double *y, const MKL_INT incy);
void cblas_caxpy (const MKL_INT n, const void *a, const void *x, const MKL_INT incx, void *y, const MKL_INT incy);
void cblas_zaxpy (const MKL_INT n, const void *a, const void *x, const MKL_INT incx, void *y, const MKL_INT incy);
The ?axpy routines perform a vector-vector operation defined as
y := a*x + y
where:
a is a scalar
x and y are vectors each with a number of elements that equals n.
Specifies the number of elements in vectors x and y.
Specifies the scalar a.
Array, size at least (1 + (n-1)*abs(incx)).
Specifies the increment for the elements of x.
Array, size at least (1 + (n-1)*abs(incy)).
Specifies the increment for the elements of y.
Contains the updated vector y.