src/etc/test-float-parse/u64-pow2.rs

   1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 mod _common;
  12
  13 use _common::validate;
  14 use std::u64;
  15
  16 fn main() {
  17     for exp in 19..64 {
  18         let power: u64 = 1 << exp;
  19         validate(power.to_string());
  20         for offset in 1..123 {
  21             validate((power + offset).to_string());
  22             validate((power - offset).to_string());
  23         }
  24     }
  25     for offset in 0..123 {
  26         validate((u64::MAX - offset).to_string());
  27     }
  28 }