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Add some tests for the exponential notation

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This commit is contained in:
SiegeLord 2014-01-16 21:54:50 -05:00
parent 25b107f1e3
commit c13e0de836
2 changed files with 43 additions and 1 deletions
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34
src/test/run-pass/exponential-notation.rs Normal file
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@ -0,0 +1,34 @@
// Copyright 2014 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.
#[feature(macro_rules)];
use s = std::num::strconv;
use to_str = std::num::strconv::float_to_str_common;
macro_rules! t(($a:expr, $b:expr) => { { let (r, _) = $a; assert_eq!(r, $b.to_owned()) } })
pub fn main() {
// Basic usage
t!(to_str(1.2345678e-5, 10u, true, s::SignNeg, s::DigMax(6), s::ExpDec, false),
"1.234568e-5")
// Hexadecimal output
t!(to_str(7.281738281250e+01, 16u, true, s::SignAll, s::DigMax(6), s::ExpBin, false),
"+1.2345p+6")
t!(to_str(-1.777768135071e-02, 16u, true, s::SignAll, s::DigMax(6), s::ExpBin, false),
"-1.2345p-6")
// Some denormals
t!(to_str(4.9406564584124654e-324, 10u, true, s::SignNeg, s::DigMax(6), s::ExpBin, false),
"1p-1074")
t!(to_str(2.2250738585072009e-308, 10u, true, s::SignNeg, s::DigMax(6), s::ExpBin, false),
"1p-1022")
}

10
src/test/run-pass/ifmt.rs
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@ -1,4 +1,4 @@
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
@ -219,6 +219,14 @@ pub fn main() {
t!(format!("{:+10.3f}", 1.0f64), " +1.000");
t!(format!("{:+10.3f}", -1.0f64), " -1.000");
t!(format!("{:e}", 1.2345e6f32), "1.2345e6");
t!(format!("{:e}", 1.2345e6f64), "1.2345e6");
t!(format!("{:E}", 1.2345e6f64), "1.2345E6");
t!(format!("{:.3e}", 1.2345e6f64), "1.234e6");
t!(format!("{:10.3e}", 1.2345e6f64), " 1.234e6");
t!(format!("{:+10.3e}", 1.2345e6f64), " +1.234e6");
t!(format!("{:+10.3e}", -1.2345e6f64), " -1.234e6");
// Escaping
t!(format!("\\{"), "{");
t!(format!("\\}"), "}");