maths: make limit constexpr

2015-10-20 16:52:39 +11:00 · 2015-10-20 16:52:39 +11:00 · 03efa074ab
commit 03efa074ab
parent c2770a266b
1 changed files with 2 additions and 5 deletions
--- a/maths.hpp
+++ b/maths.hpp
@ -350,13 +350,10 @@ namespace util {

 // min/max clamping
 template <typename T, typename U, typename V>
-T
+constexpr T
 limit [[gnu::pure]] (const T val, const U lo, const V hi)
 {
-    CHECK_LE(
-        decltype (lo+hi) (lo),
-        decltype (hi+lo) (hi)
-    );
+    CHECK_LE (lo, hi);

    return val > hi ? hi:
           val < lo ? lo: