Module bitstream 

Bitstream Operations

Core bitstream packing and logic primitives for stochastic computing. Probabilities are represented as packed Bernoulli bitstreams stored in u64 words.

Structs

BitStreamTensor

Packed bitstream tensor with original bit length metadata.

Functions

bernoulli_packed

Generate a packed Bernoulli bitstream directly into u64 words.

bernoulli_packed_fast

Fast packed Bernoulli generation using byte-threshold comparison.

bernoulli_packed_simd

SIMD-accelerated packed Bernoulli generation.

bernoulli_stream

Generate an unpacked Bernoulli bitstream from a probability.

bitwise_and

Compute bitwise-AND between two packed tensors.

encode_and_popcount

Fused encode+AND+popcount without materializing encoded input words.

encode_matrix_prob_to_packed

Encode a flat matrix of probabilities into packed Bernoulli bitstreams.

pack

Pack a 0/1 byte slice into u64 words.

pack_fast

Portable fast pack: processes 8 bytes into one output byte at a time.

popcount

Popcount of all bits set in a packed tensor.

popcount_words_portable

Portable popcount over a packed word slice.

simd_bernoulli_compare 🔒

Compare 64 bytes against a threshold and return a packed bit mask.

swar_popcount_word

Portable SWAR popcount for a single u64 word.

unpack

Unpack a packed tensor back into a 0/1 byte vector.