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Revert "[2.1.15] Restore backwards compatibility for tan()"

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This reverts commit 5e50a51386.
This commit is contained in:
Alam Ed Arias 2016-05-06 23:26:33 -04:00
parent 5e50a51386
commit d253571b38
1 changed files with 3 additions and 9 deletions
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12
src/lua_mathlib.c
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@ -81,15 +81,9 @@ static int lib_finecosine(lua_State *L)
static int lib_finetangent(lua_State *L)
{
// 2.1.15 ONLY HACK: optional boolean argument, only add ANGLE_90 if true
boolean newtan = lua_optboolean(L, 2);
if (newtan)
// HACK: add ANGLE_90 to make tan() in Lua start at 0 like it should
// use & 4095 instead of & FINEMASK (8191), so it doesn't go out of the array's bounds
lua_pushfixed(L, FINETANGENT(((luaL_checkangle(L, 1)+ANGLE_90)>>ANGLETOFINESHIFT) & 4095));
else
lua_pushfixed(L, FINETANGENT((luaL_checkangle(L, 1)>>ANGLETOFINESHIFT) & 4095));
// HACK: add ANGLE_90 to make tan() in Lua start at 0 like it should
// use & 4095 instead of & FINEMASK (8191), so it doesn't go out of the array's bounds
lua_pushfixed(L, FINETANGENT(((luaL_checkangle(L, 1)+ANGLE_90)>>ANGLETOFINESHIFT) & 4095));
return 1;
}