Trait Signum 

pub trait Signum {
    // Required methods
    fn signum(self) -> Self;
    fn signum_i128(self) -> i128;
}

✅ The sign of the number.

Returns:

• 1.0 if positive,
• 0.0 if zero,
• -1.0 if negative.

Panics

This function never panics.

Required Methods

fn signum(self) -> Self

fn signum_i128(self) -> i128

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl Signum for Dec19x19

Tests

check! ( [Dec19x19::signum] {
    (Dec19x19::MAX)   => Dec19x19!(1.0),
    (Dec19x19!(3.0))  => Dec19x19!(1.0),
    (Dec19x19!(0.0))  => Dec19x19!(0.0),
    (Dec19x19!(-3.0)) => Dec19x19!(-1.0),
    (Dec19x19::MIN)   => Dec19x19!(-1.0),
});