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