| // Copyright 2014 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. |
| |
| use core::cmp::PartialEq; |
| use core::fmt::Debug; |
| use core::ops::{Add, Sub, Mul, Div, Rem}; |
| use core::marker::Copy; |
| |
| #[macro_use] |
| mod int_macros; |
| |
| mod i8; |
| mod i16; |
| mod i32; |
| mod i64; |
| |
| #[macro_use] |
| mod uint_macros; |
| |
| mod u8; |
| mod u16; |
| mod u32; |
| mod u64; |
| |
| mod flt2dec; |
| mod dec2flt; |
| mod bignum; |
| |
| /// Helper function for testing numeric operations |
| pub fn test_num<T>(ten: T, two: T) where |
| T: PartialEq |
| + Add<Output=T> + Sub<Output=T> |
| + Mul<Output=T> + Div<Output=T> |
| + Rem<Output=T> + Debug |
| + Copy |
| { |
| assert_eq!(ten.add(two), ten + two); |
| assert_eq!(ten.sub(two), ten - two); |
| assert_eq!(ten.mul(two), ten * two); |
| assert_eq!(ten.div(two), ten / two); |
| assert_eq!(ten.rem(two), ten % two); |
| } |
| |
| #[cfg(test)] |
| mod tests { |
| use core::option::Option; |
| use core::option::Option::{Some, None}; |
| use core::num::Float; |
| |
| #[test] |
| fn from_str_issue7588() { |
| let u : Option<u8> = u8::from_str_radix("1000", 10).ok(); |
| assert_eq!(u, None); |
| let s : Option<i16> = i16::from_str_radix("80000", 10).ok(); |
| assert_eq!(s, None); |
| } |
| |
| #[test] |
| fn test_int_from_str_overflow() { |
| let mut i8_val: i8 = 127; |
| assert_eq!("127".parse::<i8>().ok(), Some(i8_val)); |
| assert_eq!("128".parse::<i8>().ok(), None); |
| |
| i8_val = i8_val.wrapping_add(1); |
| assert_eq!("-128".parse::<i8>().ok(), Some(i8_val)); |
| assert_eq!("-129".parse::<i8>().ok(), None); |
| |
| let mut i16_val: i16 = 32_767; |
| assert_eq!("32767".parse::<i16>().ok(), Some(i16_val)); |
| assert_eq!("32768".parse::<i16>().ok(), None); |
| |
| i16_val = i16_val.wrapping_add(1); |
| assert_eq!("-32768".parse::<i16>().ok(), Some(i16_val)); |
| assert_eq!("-32769".parse::<i16>().ok(), None); |
| |
| let mut i32_val: i32 = 2_147_483_647; |
| assert_eq!("2147483647".parse::<i32>().ok(), Some(i32_val)); |
| assert_eq!("2147483648".parse::<i32>().ok(), None); |
| |
| i32_val = i32_val.wrapping_add(1); |
| assert_eq!("-2147483648".parse::<i32>().ok(), Some(i32_val)); |
| assert_eq!("-2147483649".parse::<i32>().ok(), None); |
| |
| let mut i64_val: i64 = 9_223_372_036_854_775_807; |
| assert_eq!("9223372036854775807".parse::<i64>().ok(), Some(i64_val)); |
| assert_eq!("9223372036854775808".parse::<i64>().ok(), None); |
| |
| i64_val = i64_val.wrapping_add(1); |
| assert_eq!("-9223372036854775808".parse::<i64>().ok(), Some(i64_val)); |
| assert_eq!("-9223372036854775809".parse::<i64>().ok(), None); |
| } |
| |
| #[test] |
| fn test_leading_plus() { |
| assert_eq!("+127".parse::<u8>().ok(), Some(127u8)); |
| assert_eq!("+9223372036854775807".parse::<i64>().ok(), Some(9223372036854775807i64)); |
| } |
| |
| #[test] |
| fn test_invalid() { |
| assert_eq!("--129".parse::<i8>().ok(), None); |
| assert_eq!("++129".parse::<i8>().ok(), None); |
| assert_eq!("Съешь".parse::<u8>().ok(), None); |
| } |
| |
| #[test] |
| fn test_empty() { |
| assert_eq!("-".parse::<i8>().ok(), None); |
| assert_eq!("+".parse::<i8>().ok(), None); |
| assert_eq!("".parse::<u8>().ok(), None); |
| } |
| |
| macro_rules! test_impl_from { |
| ($fn_name: ident, $Small: ty, $Large: ty) => { |
| #[test] |
| fn $fn_name() { |
| let small_max = <$Small>::max_value(); |
| let small_min = <$Small>::min_value(); |
| let large_max: $Large = small_max.into(); |
| let large_min: $Large = small_min.into(); |
| assert_eq!(large_max as $Small, small_max); |
| assert_eq!(large_min as $Small, small_min); |
| } |
| } |
| } |
| |
| // Unsigned -> Unsigned |
| test_impl_from! { test_u8u16, u8, u16 } |
| test_impl_from! { test_u8u32, u8, u32 } |
| test_impl_from! { test_u8u64, u8, u64 } |
| test_impl_from! { test_u8usize, u8, usize } |
| test_impl_from! { test_u16u32, u16, u32 } |
| test_impl_from! { test_u16u64, u16, u64 } |
| test_impl_from! { test_u32u64, u32, u64 } |
| |
| // Signed -> Signed |
| test_impl_from! { test_i8i16, i8, i16 } |
| test_impl_from! { test_i8i32, i8, i32 } |
| test_impl_from! { test_i8i64, i8, i64 } |
| test_impl_from! { test_i8isize, i8, isize } |
| test_impl_from! { test_i16i32, i16, i32 } |
| test_impl_from! { test_i16i64, i16, i64 } |
| test_impl_from! { test_i32i64, i32, i64 } |
| |
| // Unsigned -> Signed |
| test_impl_from! { test_u8i16, u8, i16 } |
| test_impl_from! { test_u8i32, u8, i32 } |
| test_impl_from! { test_u8i64, u8, i64 } |
| test_impl_from! { test_u16i32, u16, i32 } |
| test_impl_from! { test_u16i64, u16, i64 } |
| test_impl_from! { test_u32i64, u32, i64 } |
| |
| // Signed -> Float |
| test_impl_from! { test_i8f32, i8, f32 } |
| test_impl_from! { test_i8f64, i8, f64 } |
| test_impl_from! { test_i16f32, i16, f32 } |
| test_impl_from! { test_i16f64, i16, f64 } |
| test_impl_from! { test_i32f64, i32, f64 } |
| |
| // Unsigned -> Float |
| test_impl_from! { test_u8f32, u8, f32 } |
| test_impl_from! { test_u8f64, u8, f64 } |
| test_impl_from! { test_u16f32, u16, f32 } |
| test_impl_from! { test_u16f64, u16, f64 } |
| test_impl_from! { test_u32f64, u32, f64 } |
| |
| // Float -> Float |
| #[test] |
| fn test_f32f64() { |
| use core::f32; |
| |
| let max: f64 = f32::MAX.into(); |
| assert_eq!(max as f32, f32::MAX); |
| assert!(max.is_normal()); |
| |
| let min: f64 = f32::MIN.into(); |
| assert_eq!(min as f32, f32::MIN); |
| assert!(min.is_normal()); |
| |
| let min_positive: f64 = f32::MIN_POSITIVE.into(); |
| assert_eq!(min_positive as f32, f32::MIN_POSITIVE); |
| assert!(min_positive.is_normal()); |
| |
| let epsilon: f64 = f32::EPSILON.into(); |
| assert_eq!(epsilon as f32, f32::EPSILON); |
| assert!(epsilon.is_normal()); |
| |
| let zero: f64 = (0.0f32).into(); |
| assert_eq!(zero as f32, 0.0f32); |
| assert!(zero.is_sign_positive()); |
| |
| let neg_zero: f64 = (-0.0f32).into(); |
| assert_eq!(neg_zero as f32, -0.0f32); |
| assert!(neg_zero.is_sign_negative()); |
| |
| let infinity: f64 = f32::INFINITY.into(); |
| assert_eq!(infinity as f32, f32::INFINITY); |
| assert!(infinity.is_infinite()); |
| assert!(infinity.is_sign_positive()); |
| |
| let neg_infinity: f64 = f32::NEG_INFINITY.into(); |
| assert_eq!(neg_infinity as f32, f32::NEG_INFINITY); |
| assert!(neg_infinity.is_infinite()); |
| assert!(neg_infinity.is_sign_negative()); |
| |
| let nan: f64 = f32::NAN.into(); |
| assert!(nan.is_nan()); |
| } |
| } |