Docs: FHERC20.md & IFHERC20.md all types documented as euint32/inEuint32 but contract uses euint128/inEuint128

[Sertug17]

Bug

The API reference docs for FHERC20 and IFHERC20 document all encrypted types as euint32/inEuint32, but the actual FHERC20.sol contract uses euint128/inEuint128 throughout.

Examples of incorrect documentation

// Docs say: ❌
mapping(address => euint32) _encBalances
function approveEncrypted(address spender, struct inEuint32 value) public virtual returns (bool)
function _allowanceEncrypted(address owner, address spender) public view virtual returns (euint32)
function transferFromEncrypted(address from, address to, euint32 value) public virtual returns (euint32)

What the actual contract has

// FHERC20.sol: ✅
mapping(address => euint128) internal _encBalances
function approveEncrypted(address spender, inEuint128 calldata value) public virtual returns (bool)
function _allowanceEncrypted(address owner, address spender) internal view returns (euint128)
function transferFromEncrypted(address from, address to, inEuint128 calldata value) public virtual returns (euint128)

Additional issues in the same files:

• _allowanceEncrypted is documented as public but is actually internal
• _encBalances is documented without internal visibility

Impact

Any developer copying function signatures or types from these docs will write incompatible code that fails to compile or integrate.

Files affected

• docs/devdocs/Solidity API/Experimental/FHERC20.md
• docs/devdocs/Solidity API/Experimental/IFHERC20.md