Crate copybook_corruption_predicates 

Pure predicate helpers for transfer-corruption heuristics used by higher-level codec error reporting.

Functions

is_ascii_printable

Return true for ASCII-printable bytes.

is_invalid_comp3_high_nibble

Detect whether a packed-decimal high nibble can never be part of COMP-3 payload.

is_invalid_comp3_low_nibble

Detect whether a packed-decimal non-terminal low nibble can never be part of COMP-3 payload.

is_invalid_comp3_sign_nibble

Detect whether a packed-decimal sign nibble (last low nibble) is invalid.

is_likely_corrupted_ebcdic_byte

Predicate for control/control-like bytes commonly seen in EBCDIC text.