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体验新版 GitCode,发现更多精彩内容 >>
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3c168b0d
编写于
4月 28, 2021
作者:
I
Iago-lito
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差异文件
Explicit what `check` means on concerned method.
上级
b8056d8e
变更
1
隐藏空白更改
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并排
Showing
1 changed file
with
20 addition
and
9 deletion
+20
-9
library/core/src/num/nonzero.rs
library/core/src/num/nonzero.rs
+20
-9
未找到文件。
library/core/src/num/nonzero.rs
浏览文件 @
3c168b0d
...
...
@@ -42,7 +42,8 @@ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
pub
struct
$Ty
(
$Int
);
impl
$Ty
{
/// Creates a non-zero without checking the value.
/// Creates a non-zero without checking whether the value is non-zero.
/// This results in undefined behaviour if the value is zero.
///
/// # Safety
///
...
...
@@ -291,7 +292,9 @@ fn rem(self, other: $Ty) -> $Int {
$
(
impl
$Ty
{
/// Add an unsigned integer to a non-zero value.
/// Return [`None`] on overflow.
/// Check for overflow and return [`None`] on overflow
/// As a consequence, the result cannot wrap to zero.
///
///
/// # Examples
///
...
...
@@ -354,7 +357,9 @@ pub const fn saturating_add(self, other: $Int) -> $Ty {
/// Add an unsigned integer to a non-zero value,
/// assuming overflow cannot occur.
/// This results in undefined behaviour when
/// Overflow is unchecked, and it is undefined behaviour to overflow
/// *even if the result would wrap to a non-zero value*.
/// The behaviour is undefined as soon as
#[doc
=
concat
!
(
"`self + rhs > "
,
stringify
!
(
$
Int),
"::MAX`"
)]
#[doc
=
concat
!
(
" or `self + rhs < "
,
stringify
!
(
$
Int),
"::MIN`."
)]
///
...
...
@@ -381,8 +386,9 @@ pub unsafe fn unchecked_add(self, other: $Int) -> $Ty {
}
/// Returns the smallest power of two greater than or equal to n.
/// If the next power of two is greater than the type’s maximum value,
/// [`None`] is returned, otherwise the power of two is wrapped in [`Some`].
/// Check for overflow and return [`None`]
/// if the next power of two is greater than the type’s maximum value.
/// As a consequence, the result cannot wrap to zero.
///
/// # Examples
///
...
...
@@ -462,8 +468,9 @@ pub const fn abs(self) -> $Ty {
}
/// Checked absolute value.
///
R
eturns [`None`] if
///
Check for overflow and r
eturns [`None`] if
#[doc
=
concat
!
(
"`self == "
,
stringify
!
(
$
Int),
"::MIN`."
)]
/// The result cannot be zero.
///
/// # Example
///
...
...
@@ -647,7 +654,8 @@ pub const fn unsigned_abs(self) -> $Uty {
$
(
impl
$Ty
{
/// Multiply two non-zero integers together.
/// Return [`None`] on overflow.
/// Check for overflow and return [`None`] on overflow.
/// As a consequence, the result cannot wrap to zero.
///
/// # Examples
///
...
...
@@ -712,7 +720,9 @@ pub const fn saturating_mul(self, other: $Ty) -> $Ty {
/// Multiply two non-zero integers together,
/// assuming overflow cannot occur.
/// This results in undefined behavior when
/// Overflow is unchecked, and it is undefined behaviour to overflow
/// *even if the result would wrap to a non-zero value*.
/// The behaviour is undefined as soon as
#[doc
=
concat
!
(
"`self * rhs > "
,
stringify
!
(
$
Int),
"::MAX`, "
)]
#[doc
=
concat
!
(
"or `self * rhs < "
,
stringify
!
(
$
Int),
"::MIN`."
)]
///
...
...
@@ -739,7 +749,8 @@ pub unsafe fn unchecked_mul(self, other: $Ty) -> $Ty {
}
/// Raise non-zero value to an integer power.
/// Return [`None`] on overflow.
/// Check for overflow and return [`None`] on overflow.
/// As a consequence, the result cannot wrap to zero.
///
/// # Examples
///
...
...
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