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MulDiv

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,
  int nNumerator,
  int nDenominator
);

Parameters

nNumber: [in] Multiplicand.

nNumerator: [in] Multiplier.

nDenominator: [in] 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.

Requirements

Routine	Required header	Architecture
MulDiv	<cmnintrin.h>	x86, ARM, SH-4, MIPS

Other Resources

Intrinsic Functions for Device Compilers

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