From 169105bb84267182d9bbf2385a30e0530fba69f1 Mon Sep 17 00:00:00 2001
From: Vinzent Steinberg <Vinzent.Steinberg@gmail.com>
Date: Fri, 2 Jun 2017 11:40:30 +0200
Subject: [PATCH] Implement `Float::{min, max}` for `no_std`

---
 traits/src/float.rs | 28 ++++++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

diff --git a/traits/src/float.rs b/traits/src/float.rs
index 4fa7fc6..9fbe635 100644
--- a/traits/src/float.rs
+++ b/traits/src/float.rs
@@ -682,6 +682,8 @@ pub trait Float
 
     /// Returns the maximum of the two numbers.
     ///
+    /// If one of the arguments is NaN, then the other argument is returned.
+    ///
     /// ```
     /// use num_traits::Float;
     ///
@@ -690,11 +692,21 @@ pub trait Float
     ///
     /// assert_eq!(x.max(y), y);
     /// ```
-    #[cfg(feature = "std")]
-    fn max(self, other: Self) -> Self;
+    #[inline]
+    fn max(self, other: Self) -> Self {
+        if self.is_nan() {
+            return other;
+        }
+        if other.is_nan() {
+            return self;
+        }
+        if self > other { self } else { other }
+    }
 
     /// Returns the minimum of the two numbers.
     ///
+    /// If one of the arguments is NaN, then the other argument is returned.
+    ///
     /// ```
     /// use num_traits::Float;
     ///
@@ -703,8 +715,16 @@ pub trait Float
     ///
     /// assert_eq!(x.min(y), x);
     /// ```
-    #[cfg(feature = "std")]
-    fn min(self, other: Self) -> Self;
+    #[inline]
+    fn min(self, other: Self) -> Self {
+        if self.is_nan() {
+            return other;
+        }
+        if other.is_nan() {
+            return self;
+        }
+        if self < other { self } else { other }
+    }
 
     /// The positive difference of two numbers.
     ///