src/libcore/num/float_macros.rs

   1 // Copyright 2014 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 #![doc(hidden)]
  12
  13 macro_rules! assert_approx_eq {
  14     ($a:expr, $b:expr) => ({
  15         use num::Float;
  16         let (a, b) = (&$a, &$b);
  17         assert!((*a - *b).abs() < 1.0e-6,
  18                 "{} is not approximately equal to {}", *a, *b);
  19     })
  20 }