Module arch 

CPU architecture utilities — port of ojph_arch.h/cpp.

Provides CPU feature detection, alignment constants, and bit-manipulation helpers that wrap Rust intrinsics for clarity and C++ API compatibility.

Enums

ArmCpuExtLevel

Supported ARM SIMD extension levels.

CpuExtLevel

Supported x86-64 SIMD extension levels, ordered by capability.

Constants

BYTE_ALIGNMENT

Required byte alignment for SIMD buffers (AVX-512 = 64 bytes).

LOG_BYTE_ALIGNMENT

log₂(BYTE_ALIGNMENT).

OBJECT_ALIGNMENT

Required alignment for heap-allocated objects.

Functions

calc_aligned_size

Returns the smallest multiple of alignment (in bytes) that can hold count elements of type T.

count_leading_zeros

Count leading zeros (32-bit).

count_leading_zeros_u64

Count leading zeros (64-bit).

count_trailing_zeros

Count trailing zeros (32-bit).

get_cpu_ext_level

Detects the highest supported x86-64 SIMD level at runtime.

ojph_round

Rounds a float to the nearest integer (ties away from zero), matching the C++ ojph_round behaviour.

ojph_trunc

Truncates a float toward zero, matching the C++ ojph_trunc.

population_count

Population count (number of set bits).