diff options
| -rw-r--r-- | src/libcore/num/mod.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs index a4829ed96b3..337f2c4a173 100644 --- a/src/libcore/num/mod.rs +++ b/src/libcore/num/mod.rs @@ -820,6 +820,18 @@ macro_rules! int_impl { $add_with_overflow:path, $sub_with_overflow:path, $mul_with_overflow:path) => { + /// Returns the smallest value that can be represented by this integer type. + #[stable(feature = "rust1", since = "1.0.0")] + pub fn min_value() -> $T { + (-1 as $T) << ($BITS - 1) + } + + /// Returns the largest value that can be represented by this integer type. + #[stable(feature = "rust1", since = "1.0.0")] + pub fn max_value() -> $T { + let min: $T = Int::min_value(); !min + } + /// Convert a string slice in a given base to an integer. /// /// Leading and trailing whitespace represent an error. @@ -1330,6 +1342,14 @@ macro_rules! uint_impl { $add_with_overflow:path, $sub_with_overflow:path, $mul_with_overflow:path) => { + /// Returns the smallest value that can be represented by this integer type. + #[stable(feature = "rust1", since = "1.0.0")] + pub fn min_value() -> $T { 0 } + + /// Returns the largest value that can be represented by this integer type. + #[stable(feature = "rust1", since = "1.0.0")] + pub fn max_value() -> $T { -1 } + /// Convert a string slice in a given base to an integer. /// /// Leading and trailing whitespace represent an error. |