Crate simdprune

Source
Expand description

Pruning elements in SIMD vectors

This crate is a port of Daniel Lemire’s C library simdprune.

The mask “marks” values in the input for deletion. So if the mask is odd, then the first value is marked for deletion. This function produces a new vector that start with all values that have not been deleted.

Passing a mask of 0 would simply copy the provided vector.

Note that this is the opposite of the mask behavior of AVX512 VCOMPRESS/VPCOMRESS instructions. If you have AVX512 much of this crate can be performed with those instructions.

§Examples

See prune_epi32.

§Features

All features below are enabled by default.

  • std - Enables the standard library. Disabling this enables the no_std crate attribute.
  • large_tables - Enables functions like prune_epi8 which require large tables (>1MB). Disabling this may speed up compilation.

Functions§

pext_prune256_epi32⚠avx2,bmi2
Prune 32-bit floating-point values. Uses 64bit pdep/pext to save a step in unpacking.
prune256_epi32⚠avx2
Prune 32-bit integer values.
prune256_ps⚠avx2
Prune 32-bit floating-point values.
prune_epi8⚠large_tables and ssse3
Prune 8-bit values.
prune_epi16⚠ssse3
Prune 8-bit values.
prune_epi32⚠ssse3
Prune 32-bit integer values.
prune_ps⚠ssse3
Prune 32-bit floating-point values.
skinnyprune_epi8⚠ssse3
Prune 8-bit values. Like prune_epi8 but uses a <1kB table.
thinprune_epi8⚠ssse3
Prune 8-bit values. Like prune_epi8 but uses a 2kB table.