MFllMulDiv function

Calculates ((a * b) + d) / c, where each term is a 64-bit signed value.

Syntax


LONGLONG WINAPI 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

Minimum supported client	Windows 7 [desktop apps \| Windows Store apps]
Minimum supported server	Windows Server 2008 R2 [desktop apps \| Windows Store apps]
Minimum supported phone	Windows Phone 8
Header	Mfapi.h
Library	Mfplat.lib
DLL	Mfplat.dll