luaur-vm 0.1.3

The Luau register virtual machine and standard library (Rust).
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

use crate::functions::lua_l_checknumber::lua_l_checknumber;
use crate::functions::lua_pushnumber::lua_pushnumber;
use crate::type_aliases::lua_state::lua_State;

#[no_mangle]
pub unsafe fn math_modf(l: *mut lua_State) -> i32 {
    let mut ip: f64 = 0.0;
    let fp = (lua_l_checknumber(l, 1)).modf(&mut ip);
    lua_pushnumber(l, ip);
    lua_pushnumber(l, fp);
    2
}

trait F64Modf {
    fn modf(&self, ip: &mut f64) -> f64;
}

impl F64Modf for f64 {
    fn modf(&self, ip: &mut f64) -> f64 {
        *ip = self.trunc();
        self - *ip
    }
}