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// run-pass
#![allow(improper_ctypes)]
// MSVC doesn't support 128 bit integers, and other Windows
// C compilers have very inconsistent views on how the ABI
// should look like.
// ignore-windows
// ignore-32bit
#[link(name = "rust_test_helpers", kind = "static")]
extern "C" {
fn identity(f: u128) -> u128;
fn square(f: i128) -> i128;
fn sub(f: i128, f: i128) -> i128;
}
fn main() {
unsafe {
let a = 0x734C_C2F2_A521;
let b = 0x33EE_0E2A_54E2_59DA_A0E7_8E41;
let b_out = identity(b);
assert_eq!(b, b_out);
let a_square = square(a);
assert_eq!(b, a_square as u128);
let k = 0x1234_5678_9ABC_DEFF_EDCB_A987_6543_210;
let k_d = 0x2468_ACF1_3579_BDFF_DB97_530E_CA86_420;
let k_out = sub(k_d, k);
assert_eq!(k, k_out);
}
}
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