Module add 

Addition operations for BigInt.

Implements constant-time addition using the adc (add with carry) algorithm as specified in the Arithmetic Algorithm Specification.

Constant-Time Behavior

All addition operations execute in constant time regardless of input values, making them suitable for cryptographic applications where timing attacks must be prevented.

Error Handling

Operations may return BigIntError::Overflow if the result would exceed the configured maximum limb capacity of the BigInt.

Functions

add

Add two BigInt values with proper sign handling.

add_assign

In-place addition for BigInt.

add_magnitude

Add two BigInt magnitudes (unsigned addition).