rust/src/test/run-pass/float-nan.rs

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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
extern mod std;
pub fn main() {
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let nan = float::NaN;
fail_unless!((float::is_NaN(nan)));
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let inf = float::infinity;
fail_unless!((-inf == float::neg_infinity));
fail_unless!(( nan != nan));
fail_unless!(( nan != -nan));
fail_unless!((-nan != -nan));
fail_unless!((-nan != nan));
fail_unless!(( nan != 1.));
fail_unless!(( nan != 0.));
fail_unless!(( nan != inf));
fail_unless!(( nan != -inf));
fail_unless!(( 1. != nan));
fail_unless!(( 0. != nan));
fail_unless!(( inf != nan));
fail_unless!((-inf != nan));
fail_unless!((!( nan == nan)));
fail_unless!((!( nan == -nan)));
fail_unless!((!( nan == 1.)));
fail_unless!((!( nan == 0.)));
fail_unless!((!( nan == inf)));
fail_unless!((!( nan == -inf)));
fail_unless!((!( 1. == nan)));
fail_unless!((!( 0. == nan)));
fail_unless!((!( inf == nan)));
fail_unless!((!(-inf == nan)));
fail_unless!((!(-nan == nan)));
fail_unless!((!(-nan == -nan)));
fail_unless!((!( nan > nan)));
fail_unless!((!( nan > -nan)));
fail_unless!((!( nan > 0.)));
fail_unless!((!( nan > inf)));
fail_unless!((!( nan > -inf)));
fail_unless!((!( 0. > nan)));
fail_unless!((!( inf > nan)));
fail_unless!((!(-inf > nan)));
fail_unless!((!(-nan > nan)));
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fail_unless!((!(nan < 0.)));
fail_unless!((!(nan < 1.)));
fail_unless!((!(nan < -1.)));
fail_unless!((!(nan < inf)));
fail_unless!((!(nan < -inf)));
fail_unless!((!(nan < nan)));
fail_unless!((!(nan < -nan)));
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fail_unless!((!( 0. < nan)));
fail_unless!((!( 1. < nan)));
fail_unless!((!( -1. < nan)));
fail_unless!((!( inf < nan)));
fail_unless!((!(-inf < nan)));
fail_unless!((!(-nan < nan)));
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fail_unless!((float::is_NaN(nan + inf)));
fail_unless!((float::is_NaN(nan + -inf)));
fail_unless!((float::is_NaN(nan + 0.)));
fail_unless!((float::is_NaN(nan + 1.)));
fail_unless!((float::is_NaN(nan * 1.)));
fail_unless!((float::is_NaN(nan / 1.)));
fail_unless!((float::is_NaN(nan / 0.)));
fail_unless!((float::is_NaN(0. / 0.)));
fail_unless!((float::is_NaN(-inf + inf)));
fail_unless!((float::is_NaN(inf - inf)));
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fail_unless!((!float::is_NaN(-1.)));
fail_unless!((!float::is_NaN(0.)));
fail_unless!((!float::is_NaN(0.1)));
fail_unless!((!float::is_NaN(1.)));
fail_unless!((!float::is_NaN(inf)));
fail_unless!((!float::is_NaN(-inf)));
fail_unless!((!float::is_NaN(1./-inf)));
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}