35 lines
1.3 KiB
Rust
35 lines
1.3 KiB
Rust
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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#[feature(macro_rules)];
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use s = std::num::strconv;
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use to_str = std::num::strconv::float_to_str_common;
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macro_rules! t(($a:expr, $b:expr) => { { let (r, _) = $a; assert_eq!(r, $b.to_owned()) } })
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pub fn main() {
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// Basic usage
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t!(to_str(1.2345678e-5, 10u, true, s::SignNeg, s::DigMax(6), s::ExpDec, false),
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"1.234568e-5")
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// Hexadecimal output
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t!(to_str(7.281738281250e+01, 16u, true, s::SignAll, s::DigMax(6), s::ExpBin, false),
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"+1.2345p+6")
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t!(to_str(-1.777768135071e-02, 16u, true, s::SignAll, s::DigMax(6), s::ExpBin, false),
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"-1.2345p-6")
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// Some denormals
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t!(to_str(4.9406564584124654e-324, 10u, true, s::SignNeg, s::DigMax(6), s::ExpBin, false),
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"1p-1074")
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t!(to_str(2.2250738585072009e-308, 10u, true, s::SignNeg, s::DigMax(6), s::ExpBin, false),
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"1p-1022")
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}
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