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About Large Integer Operations
Applications can multiply signed or unsigned 32-bit integers, generating
64-bit results, by using the Int32x32To64 and UInt32x32To64 functions. Applications can shift bits in 64-bit values to the left or right
by using the Int64ShllMod32, Int64ShraMod32, and Int64ShrlMod32 functions. These functions provide logical and arithmetic shifting.
Applications can also multiply and divide 32-bit values in a single operation
by using the MulDiv function. Although the result of the operation is a 32-bit value, the
function stores the intermediate result as a 64-bit value, so that information is not
lost when large 32-bit values are multiplied and divided.
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