MFllMulDiv function (mfapi.h)
Calculates ((a * b) + d) / c, where each term is a 64-bit signed value.
Syntax
LONGLONG MFllMulDiv(
LONGLONG a,
LONGLONG b,
LONGLONG c,
LONGLONG d
);
Parameters
a
A multiplier.
b
Another multiplier.
c
The divisor.
d
The rounding factor.
Return value
Returns the result of the calculation. If numeric overflow occurs, the function returns _I64_MAX (positive overflow) or LLONG_MIN (negative overflow). If Mfplat.dll cannot be loaded, the function returns _I64_MAX.
Remarks
Note A previous version of this topic described the parameters incorrectly. The divisor is c and the rounding factor is d.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 7 [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2008 R2 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | mfapi.h |
| Library | Mfplat.lib |
| DLL | Mfplat.dll |