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MulDiv info  Overview  Group

The MulDiv function multiplies two 32-bit values and then divides the 64-bit result by a third 32-bit value. The return value is rounded up or down to the nearest integer.

int MulDiv(

    int nNumber,

// 32-bit signed multiplicand

    int nNumerator,

// 32-bit signed multiplier

    int nDenominator 

// 32-bit signed divisor

   );

Parameters

nNumber
Specifies the multiplicand.
nNumerator
Specifies the multiplier.
nDenominator
Specifies the number by which the result of the multiplication (nNumber * nNumerator) is to be divided.

Return Values

If the function succeeds, the return value is the result of the multiplication and division. If either an overflow occurred or nDenominator was 0, the return value is -1.

See Also

Int32x32To64, UInt32x32To64

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