From 9f3624ba3e43ebe4dd0b29a7fd181a5209d76fd3 Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Wed, 14 Sep 2016 17:37:49 +1000
Subject: [PATCH] maths: add mod wrappers

---
 maths.hpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/maths.hpp b/maths.hpp
index 543ceed1..712cf7ab 100644
--- a/maths.hpp
+++ b/maths.hpp
@@ -385,6 +385,32 @@ namespace util {
     }
 
 
+    ///////////////////////////////////////////////////////////////////////////
+    // Modulus/etc
+
+    // namespaced wrapper for `man 3 fmod`
+    template <typename T>
+    constexpr
+    std::enable_if_t<
+        std::is_floating_point<T>::value, T
+    >
+    mod (T x, T y)
+    {
+        return std::fmod (x, y);
+    }
+
+
+    template <typename T>
+    constexpr
+    std::enable_if_t<
+        std::is_integral<T>::value, T
+    >
+    mod (T x, T y)
+    {
+        return x % y;
+    }
+
+
     ///////////////////////////////////////////////////////////////////////////////
     // angles, trig
     template <typename T>