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You probably don't want to memorise the formula to convert arccos to arcsin so

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GoldenTails 2021-06-22 01:38:37 -05:00 • committed by toaster
parent a6d921e37c
commit 96976fdba3
1 changed files with 7 additions and 0 deletions
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7
src/lua_mathlib.c
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@ -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)));
@ -192,6 +198,7 @@ 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},