From 5463b48e639eea5c1bb53cf0ade7ddcd5abe6fc9 Mon Sep 17 00:00:00 2001
From: Rerumu <rerumu@protonmail.com>
Date: Mon, 27 Jun 2022 20:18:55 -0400
Subject: [PATCH] Add min and max for `f32` and `f64`

---
 codegen/luajit/runtime/runtime.lua | 29 +++++++++++++++++++++++++++++
 codegen/luajit/src/translator.rs   |  2 +-
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/codegen/luajit/runtime/runtime.lua b/codegen/luajit/runtime/runtime.lua
index 5681f42..d739931 100644
--- a/codegen/luajit/runtime/runtime.lua
+++ b/codegen/luajit/runtime/runtime.lua
@@ -29,11 +29,16 @@ do
 	local div = {}
 	local rem = {}
 	local neg = {}
+	local min = {}
+	local max = {}
 	local copysign = {}
 	local nearest = {}
 
 	local to_signed = bit.tobit
+
 	local math_abs = math.abs
+	local math_min = math.min
+	local math_max = math.max
 
 	local RE_INSTANCE = ffi.new([[union {
 		double f64;
@@ -100,6 +105,26 @@ do
 		return -num
 	end
 
+	function min.f32(lhs, rhs)
+		if lhs ~= lhs then
+			return lhs
+		elseif rhs ~= rhs then
+			return rhs
+		else
+			return math_min(lhs, rhs)
+		end
+	end
+
+	function max.f32(lhs, rhs)
+		if lhs ~= lhs then
+			return lhs
+		elseif rhs ~= rhs then
+			return rhs
+		else
+			return math_max(lhs, rhs)
+		end
+	end
+
 	function copysign.f32(lhs, rhs)
 		RE_INSTANCE.f64 = rhs
 
@@ -121,6 +146,8 @@ do
 	end
 
 	neg.f64 = neg.f32
+	min.f64 = min.f32
+	max.f64 = max.f32
 	copysign.f64 = copysign.f32
 	nearest.f64 = nearest.f32
 
@@ -129,6 +156,8 @@ do
 	module.mul = mul
 	module.div = div
 	module.rem = rem
+	module.min = min
+	module.max = max
 	module.neg = neg
 	module.copysign = copysign
 	module.nearest = nearest
diff --git a/codegen/luajit/src/translator.rs b/codegen/luajit/src/translator.rs
index b71062a..f741cff 100644
--- a/codegen/luajit/src/translator.rs
+++ b/codegen/luajit/src/translator.rs
@@ -219,7 +219,7 @@ fn write_local_operation(head: &str, tail: &str, w: &mut dyn Write) -> Result<()
 	write!(w, "local {head}_{tail} = ")?;
 
 	match (head, tail) {
-		("abs" | "ceil" | "floor" | "sqrt" | "min" | "max", _) => write!(w, "math.{head} "),
+		("abs" | "ceil" | "floor" | "sqrt", _) => write!(w, "math.{head} "),
 		("rem", "i32") => write!(w, "math.fmod "),
 		("band" | "bor" | "bxor" | "bnot", _) => write!(w, "bit.{head} "),
 		("shl", _) => write!(w, "bit.lshift "),