Comparisons

Compare two encrypted values and return an encrypted boolean. Both operands must be of the same type. The result is always an ebool, regardless of the operand type. Comparison semantics depend on the type: unsigned for euintN, signed for eintN.

Comparison results are typically used with select for encrypted conditional logic.

Supported types: euint16, euint256, eint16, eint256

Usage

// Check if balance is sufficient and conditionally apply a transfer
ebool hasEnough = Nox.ge(balance, amount);
euint256 newBalance = Nox.select(hasEnough, Nox.sub(balance, amount), balance);
Nox.allowThis(newBalance);

eq

function eq(euint256 a, euint256 b) internal returns (ebool)

Returns encrypted true when a == b.

Example (Uint8)	Result	Reason
Eq(42, 42)	true	Equal values
Eq(0, 255)	false	Different values

ne

function ne(euint256 a, euint256 b) internal returns (ebool)

Returns encrypted true when a != b.

Example (Uint8)	Result	Reason
Ne(42, 42)	false	Equal values
Ne(0, 255)	true	Different values

lt

function lt(euint256 a, euint256 b) internal returns (ebool)

Returns encrypted true when a < b.

Example (Uint8)	Result	Reason
Lt(10, 200)	true	10 < 200 (unsigned)
Lt(200, 10)	false	200 < 10 is false

Example (Int8)	Result	Reason
Lt(-56, 10)	true	-56 < 10 (signed)
Lt(127, -128)	false	127 < -128 is false

le

function le(euint256 a, euint256 b) internal returns (ebool)

Returns encrypted true when a <= b.

Example (Uint8)	Result	Reason
Le(10, 10)	true	Equal values
Le(200, 10)	false	200 <= 10 is false

gt

function gt(euint256 a, euint256 b) internal returns (ebool)

Returns encrypted true when a > b.

Example (Uint8)	Result	Reason
Gt(200, 10)	true	200 > 10 (unsigned)
Gt(10, 200)	false	10 > 200 is false

Example (Int8)	Result	Reason
Gt(10, -56)	true	10 > -56 (signed)
Gt(-128, 127)	false	-128 > 127 is false

ge

function ge(euint256 a, euint256 b) internal returns (ebool)

Returns encrypted true when a >= b.

Example (Uint8)	Result	Reason
Ge(10, 10)	true	Equal values
Ge(10, 200)	false	10 >= 200 is false