Performs element by element multiplication of vector a and vector b.
FORTRAN:
call vsmul( n, a, b, y )
call vmsmul( n, a, b, y, mode )
call vdmul( n, a, b, y )
call vmdmul( n, a, b, y, mode )
call vcmul( n, a, b, y )
call vmcmul( n, a, b, y, mode )
call vzmul( n, a, b, y )
call vmzcmul( n, a, b, y, mode )
C:
vsMul( n, a, b, y );
vmsMul( n, a, b, y, mode );
vdMul( n, a, b, y );
vmdMul( n, a, b, y, mode );
vcMul( n, a, b, y );
vmcMul( n, a, b, y, mode );
vzMul( n, a, b, y );
vmzMul( n, a, b, y, mode );
Name |
Type |
Description |
|---|---|---|
n |
FORTRAN 77: INTEGER Fortran 90: INTEGER, INTENT(IN) C: const int |
Specifies the number of elements to be calculated. |
a, b |
FORTRAN 77: REAL for vsmul, vmsmul DOUBLE PRECISION for vdmul, vmdmul COMPLEX for vcmul, vmcmul DOUBLE COMPLEX for vzmul, vmzmul Fortran 90: REAL, INTENT(IN) for vsmul, vmsmul DOUBLE PRECISION, INTENT(IN) for vdmul, vmdmul COMPLEX, INTENT(IN) for vcmul, vmcmul DOUBLE COMPLEX, INTENT(IN) for vzmul, vmzmul C: const float* for vsMul, vmsmul const double* for vdMul, vmdmul const MKL_Complex8* for vcMul, vmcMul const MKL_Complex16* for vzMul, vmzMul |
FORTRAN: Arrays that specify the input vectors a and b. C: Pointers to arrays that contain the input vectors a and b. |
mode |
FORTRAN 77: INTEGER*8 Fortran 90: INTEGER(KIND=8), INTENT(IN) C: const MKL_INT64 |
Overrides global VML mode setting for this function call. See vmlSetMode for possible values and their description. |
Name |
Type |
Description |
|---|---|---|
y |
FORTRAN 77: REAL for vsmul, vmsmul DOUBLE PRECISION for vdmul, vmdmul COMPLEX, for vcmul, vmcmul DOUBLE COMPLEX for vzmul, vmzmul Fortran 90: REAL, INTENT(OUT) for vsmul, vmsmul DOUBLE PRECISION, INTENT(OUT) for vdmul, vmdmul COMPLEX, INTENT(OUT) for vcmul, vmcmul DOUBLE COMPLEX, INTENT(OUT) for vzmul, vmzmul C: float* for vsMul, vmsmul double* for vdMul, vmdmul MKL_Complex8* for vcMul, vmcMul MKL_Complex16* for vzMul, vmzMul |
FORTRAN: Array that specifies the output vector y. C: Pointer to an array that contains the output vector y. |
The v?Mul function performs element by element multiplication of vector a and vector b.
| Argument 1 | Argument 2 | Result | Exception |
|---|---|---|---|
| +0 | +0 | +0 | |
| +0 | -0 | -0 | |
| -0 | +0 | -0 | |
| -0 | -0 | +0 | |
| +0 | +∞ | QNAN | INVALID |
| +0 | -∞ | QNAN | INVALID |
| -0 | +∞ | QNAN | INVALID |
| -0 | -∞ | QNAN | INVALID |
| +∞ | +0 | QNAN | INVALID |
| +∞ | -0 | QNAN | INVALID |
| -∞ | +0 | QNAN | INVALID |
| -∞ | -0 | QNAN | INVALID |
| +∞ | +∞ | +∞ | |
| +∞ | -∞ | -∞ | |
| -∞ | +∞ | -∞ | |
| -∞ | -∞ | +∞ | |
| SNAN | any value | QNAN | INVALID |
| any value | SNAN | QNAN | INVALID |
| QNAN | non-SNAN | QNAN | |
| non-SNAN | QNAN | QNAN |
Specifications for special values of the complex functions are defined according to the following formula
Mul(x1+i*y1,x2+i*y2) = (x1*x2-y1*y2) + i*(x1*y2+y1*x2).
Overflow in a complex function occurs (supported in the HA/LA accuracy modes only) when x1, x2, y1, y2 are finite numbers, but the real or imaginary part of the exact 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 VML Error Status to VML_STATUS_OVERFLOW.