pub fn is_negative(&self, number_kind: &NumberKind) -> bool {
        match number_kind {
            NumberKind::I64 => (self.0 as i64).is_negative(),
            NumberKind::F64 => u64_to_f64(self.0).is_sign_negative(),
            NumberKind::U64 => false,
        }
    }
/// `true` if the actual value is less than zero.
`true` if the actual value is less than zero.
` true ` if the actual value is less than zero .
pub fn is_negative(&self, number_kind: &NumberKind) -> bool {
        match number_kind {
            NumberKind::I64 => (self.0 as i64).is_negative(),
            NumberKind::F64 => u64_to_f64(self.0).is_sign_negative(),
            NumberKind::U64 => false,
        }
    }
pub fn is_negative ( & self , number_kind : & NumberKind ) -> bool { match number_kind { NumberKind :: I64 => ( self . 0 as i64 ) . is_negative ( ) , NumberKind :: F64 => u64_to_f64 ( self . 0 ) . is_sign_negative ( ) , NumberKind :: U64 => false , } }
`true` if the actual value is less than zero.
` true ` if the actual value is less than zero .
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