Modifying LJ to add a few math functions
- From: Emil Dotchevski <emildotchevski@xxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Thu, 25 Jul 2013 17:32:21 -0700
Hello,
I'm trying to replace Lua with LJ on a XBOX 360 project, but
unfortunately the original Lua distribution was modified and I need to
replicate the changes to LJ.
What should I change in order to add functions to the math lib? I
added the functions to lib_math.c like so:
LJLIB_ASM(math_nmod) LJLIB_REC(math_nmod)
{
int x = lj_lib_checkint(L, 1);
if (L->base+1 < L->top) {
int y = lj_lib_checkint(L, 2);
setintV(L->base-1, x%y);
return FFH_RES(1);
}
return FFH_RETRY;
}
LJLIB_ASM(math_ndiv) LJLIB_REC(math_nmod)
{
int x = lj_lib_checkint(L, 1);
if (L->base+1 < L->top) {
int y = lj_lib_checkint(L, 2);
setintV(L->base-1, x/y);
return FFH_RES(1);
}
return FFH_RETRY;
}
LJLIB_ASM(math_pi) LJLIB_REC(math_pi)
{
setnumV(L->top++,3.14159265358979323846);
return 1;
}
But apparently this is not sufficient, as I get the following build error:
Error: undefined fast function lj_ff_math_nmod
I looked around a bit until I realized that it's likely that I'll
break something if I try to resolve this on my own. I appreciate any
help.
Thanks,
Emil
Other related posts:
