Visible to Intel only — GUID: GUID-6A70BB7E-F5F9-42B8-ACB0-D2473AD3B287
Visible to Intel only — GUID: GUID-6A70BB7E-F5F9-42B8-ACB0-D2473AD3B287
v?MulByConj
Performs element by element multiplication of vector a element and conjugated vector b element.
Syntax
call vcmulbyconj( n, a, b, y )
call vsmulbyconji(n, a, inca, b, incb, y, incy)
call vmcmulbyconj( n, a, b, y, mode )
call vmsmulbyconji(n, a, inca, b, incb, y, incy, mode)
call vzmulbyconj( n, a, b, y )
call vdmulbyconji(n, a, inca, b, incb, y, incy)
call vmzmulbyconj( n, a, b, y, mode )
call vmdmulbyconji(n, a, inca, b, incb, y, incy, mode)
Include Files
- mkl_vml.f90
Input Parameters
Name |
Type |
Description |
---|---|---|
n |
INTEGER, INTENT(IN) |
Specifies the number of elements to be calculated. |
a, b |
DOUBLE COMPLEX for vzmulbyconj, vmzmulbyconj COMPLEX, INTENT(IN) for vcmulbyconj, vmcmulbyconj DOUBLE COMPLEX, INTENT(IN) for vzmulbyconj, vmzmulbyconj |
Arrays that specify the input vectors a and b. |
inca, incb, incy |
INTEGER, INTENT(IN) |
Specifies increments for the elements of a, b, and y. |
mode |
INTEGER(KIND=8), INTENT(IN) |
Overrides global VM mode setting for this function call. See vmlSetMode for possible values and their description. |
Output Parameters
Name |
Type |
Description |
---|---|---|
y |
DOUBLE COMPLEX for vzmulbyconj, vmzmulbyconj COMPLEX, INTENT(OUT) for vcmulbyconj, vmcmulbyconj DOUBLE COMPLEX, INTENT(OUT) for vzmulbyconj, vmzmulbyconj |
Array that specifies the output vector y. |
Description
The v?MulByConj function performs element by element multiplication of vector a element and conjugated vector b element.
Specifications for special values of the functions are found according to the formula
MulByConj(x1+i*y1,x2+i*y2) = Mul(x1+i*y1,x2-i*y2).
Overflow in a complex function occurs (supported in the HA/LA accuracy modes only) when all RE(x), RE(y), IM(x), IM(y) arguments are finite numbers, but the real or imaginary part of the computed result is so large that it does not fit the target precision. In this case, the function returns ∞ in that part of the result, raises the OVERFLOW exception, and sets the VM Error Status to VML_STATUS_OVERFLOW (overriding any possible VML_STATUS_ACCURACYWARNING status).