Large Integer Functions

The following functions are used with large integers.

In this section

Function	Description
Int32x32To64	Multiplies two signed 32-bit integers, returning a signed 64-bit integer result.
Int64ShllMod32	Performs a left logical shift operation on an unsigned 64-bit integer value. The function provides improved shifting code for left logical shifts where the shift count is in the range 0-31.
Int64ShraMod32	Performs a right arithmetic shift operation on a signed 64-bit integer value. The function provides improved shifting code for right arithmetic shifts where the shift count is in the range 0-31.
Int64ShrlMod32	Performs a right logical shift operation on an unsigned 64-bit integer value. The function provides improved shifting code for right logical shifts where the shift count is in the range 0-31.
MulDiv	Multiplies two 32-bit values and then divides the 64-bit result by a third 32-bit value.
Multiply128	Multiplies two 64-bit integers to produce a 128-bit integer.
MultiplyExtract128	Multiplies two 64-bit integers to produce a 128-bit integer, shifts the product to the right by the specified number of bits, and returns the low 64 bits of the result.
MultiplyHigh	Multiplies two 64-bit integers to produce a 128-bit integer and gets the high 64 bits.
PopulationCount64	Counts the number of one bits (population count) in a 64-bit unsigned integer.
ShiftLeft128	Shifts 128-bit left.
ShiftRight128	Shifts 128-bit right.
UInt32x32To64	Multiplies two unsigned 32-bit integers, returning an unsigned 64-bit integer result.
UnsignedMultiply128	Multiplies two unsigned 64-bit integers to produce an unsigned 128-bit integer.
UnsignedMultiplyExtract128	Multiplies two unsigned 64-bit integers to produce an unsigned 128-bit integer, shifts the product to the right by the specified number of bits, and returns the low 64 bits of the result.
UnsignedMulitplyHigh	Multiplies two 64-bit integers to produce a 128-bit integer and gets the high unsigned 64 bits.