Visible to Intel only — GUID: GUID-44303F2C-ACC7-4D24-89A5-EA16A0312C3C
Visible to Intel only — GUID: GUID-44303F2C-ACC7-4D24-89A5-EA16A0312C3C
?dotci
Computes the conjugated dot product of a compressed sparse complex vector with a full-storage complex vector.
Syntax
res = cdotci(nz, x, indx, y )
res = zdotci(nzz, x, indx, y )
res = dotci(x, indx, y)
Include Files
- mkl.fi, blas.f90
Description
The ?dotci routines return the dot product of x and y defined as
conjg(x(1))*y(indx(1)) + ... + conjg(x(nz))*y(indx(nz))
where the triple (nz, x, indx) defines a sparse complex vector stored in compressed form, and y is a real vector in full storage form. The functions reference only the elements of y whose indices are listed in the array indx. The values in indx must be distinct.
Input Parameters
- nz
-
INTEGER. The number of elements in x and indx .
- x
-
COMPLEX for cdotci
DOUBLE COMPLEX for zdotci
Array, size at least nz.
- indx
-
INTEGER. Specifies the indices for the elements of x.
Array, size at least nz.
- y
-
COMPLEX for cdotci
DOUBLE COMPLEX for zdotci
Array, size at least max(indx(i)).
Output Parameters
- res
-
COMPLEX for cdotci
DOUBLE COMPLEX for zdotci
Contains the conjugated dot product of x and y, if nz is positive. Otherwise, it contains 0.
BLAS 95 Interface Notes
Routines in Fortran 95 interface have fewer arguments in the calling sequence than their FORTRAN 77 counterparts. For general conventions applied to skip redundant or reconstructible arguments, see BLAS 95 Interface Conventions.
Specific details for the routine dotci interface are the following:
- x
-
Holds the vector with the number of elements (nz).
- indx
-
Holds the vector with the number of elements (nz).
- y
-
Holds the vector with the number of elements (nz).