Trait Signum

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

const fn signum(self) -> Self

const 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),
});