float_sign

Summary. Return whether an XFL is negative.

Signature.

int64_t float_sign(int64_t float1);

Parameters.

Name	Type	Description
float1	int64_t	The XFL to inspect.

Return value. 1 if float1 is negative, 0 if it is positive or the XFL 0. Errors: INVALID_FLOAT (-10024) if float1 is not a valid XFL.

Common failure patterns.

• A raw negative int64_t argument → INVALID_FLOAT (do not confuse the sign of the encoding with the sign of the number).

Caveats / notes.

• Zero has sign 0.

Minimal example.

int64_t neg = float_sign(float_negate(float_one()));   // 1

Related APIs. float_negate, float_mantissa.