SL-18330: Use recursive variadic llmax(), llmin()

instead of having specific binary, ternary and quaternary overloads.

1 files changed, 17 insertions, 31 deletions

diff --git a/indra/llcommon/lldefs.h b/indra/llcommon/lldefs.h
index 5c46f6a796..4e25001fff 100644
--- a/indra/llcommon/lldefs.h
+++ b/indra/llcommon/lldefs.h
@@ -167,48 +167,34 @@ const U32	MAXADDRSTR		= 17;		// 123.567.901.345 = 15 chars + \0 + 1 for good luc
 //
 // defined for U16, U32, U64, S16, S32, S64, :
 //   llclampb(a)     // clamps a to [0 .. 255]
-//   				   
-
-template <typename T1, typename T2> 
-inline auto llmax(T1 d1, T2 d2)
-{
-	return (d1 > d2) ? d1 : d2;
-}
-
-template <typename T1, typename T2, typename T3> 
-inline auto llmax(T1 d1, T2 d2, T3 d3)
-{
-	auto r = llmax(d1,d2);
-	return llmax(r, d3);
-}
+//
 
-template <typename T1, typename T2, typename T3, typename T4> 
-inline auto llmax(T1 d1, T2 d2, T3 d3, T4 d4)
+// recursion tail
+template <typename T>
+inline auto llmax(T data)
 {
-	auto r1 = llmax(d1,d2);
-	auto r2 = llmax(d3,d4);
-	return llmax(r1, r2);
+    return data;
 }
 
-template <typename T1, typename T2> 
-inline auto llmin(T1 d1, T2 d2)
+template <typename T0, typename T1, typename... Ts> 
+inline auto llmax(T0 d0, T1 d1, Ts... rest)
 {
-	return (d1 < d2) ? d1 : d2;
+    auto maxrest = llmax(d1, rest...);
+    return (d0 > maxrest)? d0 : maxrest;
 }
 
-template <typename T1, typename T2, typename T3> 
-inline auto llmin(T1 d1, T2 d2, T3 d3)
+// recursion tail
+template <typename T>
+inline auto llmin(T data)
 {
-	auto r = llmin(d1,d2);
-	return (r < d3 ? r : d3);
+    return data;
 }
 
-template <typename T1, typename T2, typename T3, typename T4> 
-inline auto llmin(T1 d1, T2 d2, T3 d3, T4 d4)
+template <typename T0, typename T1, typename... Ts> 
+inline auto llmin(T0 d0, T1 d1, Ts... rest)
 {
-	auto r1 = llmin(d1,d2);
-	auto r2 = llmin(d3,d4);
-	return llmin(r1, r2);
+    auto minrest = llmin(d1, rest...);
+    return (d0 < minrest) ? d0 : minrest;
 }
 
 template <typename A, typename MIN, typename MAX>