shiftRightUnsigned64

shiftRightUnsigned64(value, count): bigint

Defined in: packages/core/src/big-int/bit/shift-right-unsigned64.ts:17

Logical right shift of the low 64 bits — JavaScript’s missing >>> for bigint, which only has the sign-propagating >>.

The value is taken as an unsigned 64-bit word first, so a negative operand shifts in zeros from its two’s complement pattern rather than ones. A shift of 64 or more clears the word, matching what a 64-bit machine instruction would leave behind rather than C’s undefined behaviour.

Parameters

value

bigint

The word to shift; only its low 64 bits are considered.

count

number

Bit positions to shift by. Zero or less returns the word unchanged apart from the masking.

Returns

bigint

The shifted word, always non-negative.