src/libcore/benches/num/mod.rs

   1 mod dec2flt;
   2 mod flt2dec;
   3
   4 use std::str::FromStr;
   5 use test::Bencher;
   6
   7 const ASCII_NUMBERS: [&str; 19] = [
   8     "0",
   9     "1",
  10     "2",
  11     "43",
  12     "765",
  13     "76567",
  14     "987245987",
  15     "-4aa32",
  16     "1786235",
  17     "8723095",
  18     "f##5s",
  19     "83638730",
  20     "-2345",
  21     "562aa43",
  22     "-1",
  23     "-0",
  24     "abc",
  25     "xyz",
  26     "c0ffee",
  27 ];
  28
  29 macro_rules! from_str_bench {
  30     ($mac:ident, $t:ty) => {
  31         #[bench]
  32         fn $mac(b: &mut Bencher) {
  33             b.iter(|| {
  34                 ASCII_NUMBERS
  35                     .iter()
  36                     .cycle()
  37                     .take(5_000)
  38                     .filter_map(|s| <$t>::from_str(s).ok())
  39                     .max()
  40             })
  41         }
  42     };
  43 }
  44
  45 macro_rules! from_str_radix_bench {
  46     ($mac:ident, $t:ty, $radix:expr) => {
  47         #[bench]
  48         fn $mac(b: &mut Bencher) {
  49             b.iter(|| {
  50                 ASCII_NUMBERS
  51                     .iter()
  52                     .cycle()
  53                     .take(5_000)
  54                     .filter_map(|s| <$t>::from_str_radix(s, $radix).ok())
  55                     .max()
  56             })
  57         }
  58     };
  59 }
  60
  61 from_str_bench!(bench_u8_from_str, u8);
  62 from_str_radix_bench!(bench_u8_from_str_radix_2, u8, 2);
  63 from_str_radix_bench!(bench_u8_from_str_radix_10, u8, 10);
  64 from_str_radix_bench!(bench_u8_from_str_radix_16, u8, 16);
  65 from_str_radix_bench!(bench_u8_from_str_radix_36, u8, 36);
  66
  67 from_str_bench!(bench_u16_from_str, u16);
  68 from_str_radix_bench!(bench_u16_from_str_radix_2, u16, 2);
  69 from_str_radix_bench!(bench_u16_from_str_radix_10, u16, 10);
  70 from_str_radix_bench!(bench_u16_from_str_radix_16, u16, 16);
  71 from_str_radix_bench!(bench_u16_from_str_radix_36, u16, 36);
  72
  73 from_str_bench!(bench_u32_from_str, u32);
  74 from_str_radix_bench!(bench_u32_from_str_radix_2, u32, 2);
  75 from_str_radix_bench!(bench_u32_from_str_radix_10, u32, 10);
  76 from_str_radix_bench!(bench_u32_from_str_radix_16, u32, 16);
  77 from_str_radix_bench!(bench_u32_from_str_radix_36, u32, 36);
  78
  79 from_str_bench!(bench_u64_from_str, u64);
  80 from_str_radix_bench!(bench_u64_from_str_radix_2, u64, 2);
  81 from_str_radix_bench!(bench_u64_from_str_radix_10, u64, 10);
  82 from_str_radix_bench!(bench_u64_from_str_radix_16, u64, 16);
  83 from_str_radix_bench!(bench_u64_from_str_radix_36, u64, 36);
  84
  85 from_str_bench!(bench_i8_from_str, i8);
  86 from_str_radix_bench!(bench_i8_from_str_radix_2, i8, 2);
  87 from_str_radix_bench!(bench_i8_from_str_radix_10, i8, 10);
  88 from_str_radix_bench!(bench_i8_from_str_radix_16, i8, 16);
  89 from_str_radix_bench!(bench_i8_from_str_radix_36, i8, 36);
  90
  91 from_str_bench!(bench_i16_from_str, i16);
  92 from_str_radix_bench!(bench_i16_from_str_radix_2, i16, 2);
  93 from_str_radix_bench!(bench_i16_from_str_radix_10, i16, 10);
  94 from_str_radix_bench!(bench_i16_from_str_radix_16, i16, 16);
  95 from_str_radix_bench!(bench_i16_from_str_radix_36, i16, 36);
  96
  97 from_str_bench!(bench_i32_from_str, i32);
  98 from_str_radix_bench!(bench_i32_from_str_radix_2, i32, 2);
  99 from_str_radix_bench!(bench_i32_from_str_radix_10, i32, 10);
 100 from_str_radix_bench!(bench_i32_from_str_radix_16, i32, 16);
 101 from_str_radix_bench!(bench_i32_from_str_radix_36, i32, 36);
 102
 103 from_str_bench!(bench_i64_from_str, i64);
 104 from_str_radix_bench!(bench_i64_from_str_radix_2, i64, 2);
 105 from_str_radix_bench!(bench_i64_from_str_radix_10, i64, 10);
 106 from_str_radix_bench!(bench_i64_from_str_radix_16, i64, 16);
 107 from_str_radix_bench!(bench_i64_from_str_radix_36, i64, 36);