Crate copybook_overflow 

Overflow-safe numeric guards for copybook-rs.

This crate isolates checked arithmetic and checked narrowing conversions that are performance-sensitive and correctness-critical.

All functions return structured copybook_error::Error values with domain-specific error codes on overflow.

Functions

safe_array_bound

Safely calculate COBOL array bounds with overflow protection.

safe_u64_to_u16

Safely convert u64 to u16 with overflow checking.

safe_u64_to_u32

Safely convert u64 to u32 with overflow checking.

safe_usize_to_u32

Safely convert usize to u32 with overflow checking.