luaur-vm 0.1.1

The Luau register virtual machine and standard library (Rust).
Documentation 
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use crate::functions::lua_l_checkinteger_64::lua_l_checkinteger_64;
use crate::functions::lua_l_error_l::lua_l_error_l;
use crate::functions::lua_pushinteger_64::lua_pushinteger_64;
use crate::type_aliases::lua_state::LuaState;

#[no_mangle]
pub unsafe fn int64_mod(l: *mut LuaState) -> core::ffi::c_int {
    let a = lua_l_checkinteger_64(l, 1);
    let b = lua_l_checkinteger_64(l, 2);

    if b == 0 {
        lua_l_error_l(
            l,
            c"division by zero".as_ptr(),
            core::format_args!("division by zero"),
        );
    }

    let remainder = if (a != i64::MIN) || (b != -1) {
        let r = a % b;
        if r != 0 && ((a < 0) != (b < 0)) {
            r + b
        } else {
            r
        }
    } else {
        0
    };

    lua_pushinteger_64(l, remainder);

    1
}