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.
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.
11 use core::cmp::PartialEq;
13 use core::num::{NumCast, cast};
14 use core::ops::{Add, Sub, Mul, Div, Rem};
15 use core::marker::Copy;
35 /// Helper function for testing numeric operations
36 pub fn test_num<T>(ten: T, two: T) where
37 T: PartialEq + NumCast
38 + Add<Output=T> + Sub<Output=T>
39 + Mul<Output=T> + Div<Output=T>
40 + Rem<Output=T> + Debug
43 assert_eq!(ten.add(two), cast(12i).unwrap());
44 assert_eq!(ten.sub(two), cast(8i).unwrap());
45 assert_eq!(ten.mul(two), cast(20i).unwrap());
46 assert_eq!(ten.div(two), cast(5i).unwrap());
47 assert_eq!(ten.rem(two), cast(0i).unwrap());
49 assert_eq!(ten.add(two), ten + two);
50 assert_eq!(ten.sub(two), ten - two);
51 assert_eq!(ten.mul(two), ten * two);
52 assert_eq!(ten.div(two), ten / two);
53 assert_eq!(ten.rem(two), ten % two);
58 use core::option::Option;
59 use core::option::Option::{Some, None};
61 use core::num::from_str_radix;
64 fn from_str_issue7588() {
65 let u : Option<u8> = from_str_radix("1000", 10);
67 let s : Option<i16> = from_str_radix("80000", 10);
69 let f : Option<f32> = from_str_radix("10000000000000000000000000000000000000000", 10);
70 assert_eq!(f, Some(Float::infinity()));
71 let fe : Option<f32> = from_str_radix("1e40", 10);
72 assert_eq!(fe, Some(Float::infinity()));
76 fn test_from_str_radix_float() {
77 let x1 : Option<f64> = from_str_radix("-123.456", 10);
78 assert_eq!(x1, Some(-123.456));
79 let x2 : Option<f32> = from_str_radix("123.456", 10);
80 assert_eq!(x2, Some(123.456));
81 let x3 : Option<f32> = from_str_radix("-0.0", 10);
82 assert_eq!(x3, Some(-0.0));
83 let x4 : Option<f32> = from_str_radix("0.0", 10);
84 assert_eq!(x4, Some(0.0));
85 let x4 : Option<f32> = from_str_radix("1.0", 10);
86 assert_eq!(x4, Some(1.0));
87 let x5 : Option<f32> = from_str_radix("-1.0", 10);
88 assert_eq!(x5, Some(-1.0));
92 fn test_int_from_str_overflow() {
93 let mut i8_val: i8 = 127_i8;
94 assert_eq!("127".parse::<i8>(), Some(i8_val));
95 assert_eq!("128".parse::<i8>(), None);
98 assert_eq!("-128".parse::<i8>(), Some(i8_val));
99 assert_eq!("-129".parse::<i8>(), None);
101 let mut i16_val: i16 = 32_767_i16;
102 assert_eq!("32767".parse::<i16>(), Some(i16_val));
103 assert_eq!("32768".parse::<i16>(), None);
106 assert_eq!("-32768".parse::<i16>(), Some(i16_val));
107 assert_eq!("-32769".parse::<i16>(), None);
109 let mut i32_val: i32 = 2_147_483_647_i32;
110 assert_eq!("2147483647".parse::<i32>(), Some(i32_val));
111 assert_eq!("2147483648".parse::<i32>(), None);
114 assert_eq!("-2147483648".parse::<i32>(), Some(i32_val));
115 assert_eq!("-2147483649".parse::<i32>(), None);
117 let mut i64_val: i64 = 9_223_372_036_854_775_807_i64;
118 assert_eq!("9223372036854775807".parse::<i64>(), Some(i64_val));
119 assert_eq!("9223372036854775808".parse::<i64>(), None);
122 assert_eq!("-9223372036854775808".parse::<i64>(), Some(i64_val));
123 assert_eq!("-9223372036854775809".parse::<i64>(), None);