src/libcore/benches/num/flt2dec/mod.rs

   1 mod strategy {
   2     mod dragon;
   3     mod grisu;
   4 }
   5
   6 use core::num::flt2dec::MAX_SIG_DIGITS;
   7 use core::num::flt2dec::{decode, DecodableFloat, Decoded, FullDecoded};
   8 use std::io::Write;
   9 use std::vec::Vec;
  10 use test::Bencher;
  11
  12 pub fn decode_finite<T: DecodableFloat>(v: T) -> Decoded {
  13     match decode(v).1 {
  14         FullDecoded::Finite(decoded) => decoded,
  15         full_decoded => panic!("expected finite, got {:?} instead", full_decoded),
  16     }
  17 }
  18
  19 #[bench]
  20 fn bench_small_shortest(b: &mut Bencher) {
  21     let mut buf = Vec::with_capacity(20);
  22
  23     b.iter(|| {
  24         buf.clear();
  25         write!(&mut buf, "{}", 3.1415926f64).unwrap()
  26     });
  27 }
  28
  29 #[bench]
  30 fn bench_big_shortest(b: &mut Bencher) {
  31     let mut buf = Vec::with_capacity(300);
  32
  33     b.iter(|| {
  34         buf.clear();
  35         write!(&mut buf, "{}", f64::MAX).unwrap()
  36     });
  37 }