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Post ++xeb jet.

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This commit is contained in:
Sigilante 2023-10-20 15:07:44 -05:00
parent 3f4bd26aaf
commit 45501cbb5a
1 changed files with 25 additions and 0 deletions
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25
rust/ares/src/jets/bits.rs
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@ -4,6 +4,7 @@ use crate::interpreter::Context;
use crate::jets::util::*; use crate::jets::util::*;
use crate::jets::JetErr::*; use crate::jets::JetErr::*;
use crate::jets::Result; use crate::jets::Result;
use crate::noun::DIRECT_MAX;
use crate::noun::{DirectAtom, IndirectAtom, Noun, D}; use crate::noun::{DirectAtom, IndirectAtom, Noun, D};
use std::cmp; use std::cmp;
@ -346,6 +347,17 @@ pub fn jet_mix(context: &mut Context, subject: Noun) -> Result {
} }
} }
pub fn jet_xeb(context: &mut Context, subject: Noun) -> Result {
let sam = slot(subject, 6)?;
let a = slot(sam, 1)?.as_atom()?;
let syz = met(0, a) as u64;
unsafe {
Ok(DirectAtom::new_unchecked(syz).as_atom().as_noun())
}
}
#[cfg(test)] #[cfg(test)]
mod tests { mod tests {
use super::*; use super::*;
@ -710,4 +722,17 @@ mod tests {
let sam = T(s, &[a128, a0]); let sam = T(s, &[a128, a0]);
assert_jet(s, jet_mix, sam, a128); assert_jet(s, jet_mix, sam, a128);
} }
#[test]
fn test_xeb() {
let s = &mut init_stack();
assert_jet(s, jet_xeb, D(0), D(0));
assert_jet(s, jet_xeb, D(1), D(1));
assert_jet(s, jet_xeb, D(31), D(5));
assert_jet(s, jet_xeb, D(32), D(6));
assert_jet(s, jet_xeb, D(0xfff), D(12));
assert_jet(s, jet_xeb, D(0xffff), D(16));
assert_jet(s, jet_xeb, D(0x3fffffffffffffff), D(62));
assert_jet(s, jet_xeb, D(0x4000000000000000), D(63));
}
} }