rust/src/etc/test-float-parse/rand-f64.rs

33 lines
913 B
Rust

// Copyright 2015 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(rand)]
extern crate rand;
mod _common;
use _common::{validate, SEED};
use rand::{IsaacRng, Rng, SeedableRng};
use std::mem::transmute;
fn main() {
let mut rnd = IsaacRng::from_seed(&SEED);
let mut i = 0;
while i < 10_000_000 {
let bits = rnd.next_u64();
let x: f64 = unsafe { transmute(bits) };
if x.is_finite() {
validate(&format!("{:e}", x));
i += 1;
}
}
}