From 389cea2bc18a29f34132c41ad1027a1e588b6205 Mon Sep 17 00:00:00 2001
From: GoldenTails <milestailsprower101n2@gmail.com>
Date: Tue, 22 Jun 2021 01:38:37 -0500
Subject: [PATCH] You probably don't want to memorise the formula to convert
arccos to arcsin so
---
src/lua_mathlib.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/lua_mathlib.c b/src/lua_mathlib.c
index e6f8c98c13..bd9218a3d5 100644
--- a/src/lua_mathlib.c
+++ b/src/lua_mathlib.c
@@ -88,6 +88,12 @@ static int lib_finetangent(lua_State *L)
return 1;
}
+static int lib_fixedasin(lua_State *L)
+{
+ lua_pushangle(L, -FixedAcos(luaL_checkfixed(L, 1)) + ANGLE_90);
+ return 1;
+}
+
static int lib_fixedacos(lua_State *L)
{
lua_pushangle(L, FixedAcos(luaL_checkfixed(L, 1)));
@@ -199,6 +205,7 @@ static luaL_Reg lib_math[] = {
{"sin", lib_finesine},
{"cos", lib_finecosine},
{"tan", lib_finetangent},
+ {"asin", lib_fixedasin},
{"acos", lib_fixedacos},
{"FixedAngle", lib_fixedangle},
{"fixangle" , lib_fixedangle},
--
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