From 057207c26f1ed07b35354a6a5b9365281fbb72f6 Mon Sep 17 00:00:00 2001
From: Shaopeng Wang <spxwang@gmail.com>
Date: Fri, 13 Mar 2020 12:24:07 +1300
Subject: [PATCH] Add is_positive and is_negative fn to Fixed128. (#121)
---
utilities/src/fixed_128.rs | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/utilities/src/fixed_128.rs b/utilities/src/fixed_128.rs
index 601d5da..2f21554 100644
--- a/utilities/src/fixed_128.rs
+++ b/utilities/src/fixed_128.rs
@@ -185,6 +185,14 @@ impl Fixed128 {
*self
}
}
+
+ pub fn is_positive(&self) -> bool {
+ self.0.is_positive()
+ }
+
+ pub fn is_negative(&self) -> bool {
+ self.0.is_negative()
+ }
}
impl Saturating for Fixed128 {
@@ -553,4 +561,19 @@ mod tests {
// saturating
assert_eq!(Fixed128::min_value().saturating_abs(), Fixed128::max_value());
}
+
+ #[test]
+ fn is_positive_negative_should_work() {
+ let positive = Fixed128::from_parts(1);
+ assert!(positive.is_positive());
+ assert!(!positive.is_negative());
+
+ let negative = Fixed128::from_parts(-1);
+ assert!(!negative.is_positive());
+ assert!(negative.is_negative());
+
+ let zero = Fixed128::zero();
+ assert!(!zero.is_positive());
+ assert!(!zero.is_negative());
+ }
}
--
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