Add #![feature(const_float_bits_conv)] for f64::to_bits and friends
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Dylan MacKenzie
parent
527a685e40
commit
3cd450ec5d
3 changed files with 33 additions and 16 deletions
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@ -73,6 +73,7 @@
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#![feature(const_discriminant)]
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#![feature(const_checked_int_methods)]
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#![feature(const_euclidean_int_methods)]
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#![feature(const_float_bits_conv)]
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#![feature(const_overflowing_int_methods)]
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#![feature(const_int_unchecked_arith)]
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#![feature(const_int_pow)]
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@ -652,8 +652,9 @@ impl f32 {
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///
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/// ```
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#[stable(feature = "float_bits_conv", since = "1.20.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn to_bits(self) -> u32 {
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pub const fn to_bits(self) -> u32 {
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// SAFETY: `u32` is a plain old datatype so we can always transmute to it
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unsafe { mem::transmute(self) }
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}
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@ -695,8 +696,9 @@ impl f32 {
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/// assert_eq!(v, 12.5);
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/// ```
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#[stable(feature = "float_bits_conv", since = "1.20.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn from_bits(v: u32) -> Self {
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pub const fn from_bits(v: u32) -> Self {
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// SAFETY: `u32` is a plain old datatype so we can always transmute from it
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// It turns out the safety issues with sNaN were overblown! Hooray!
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unsafe { mem::transmute(v) }
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@ -712,8 +714,9 @@ impl f32 {
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/// assert_eq!(bytes, [0x41, 0x48, 0x00, 0x00]);
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn to_be_bytes(self) -> [u8; 4] {
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pub const fn to_be_bytes(self) -> [u8; 4] {
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self.to_bits().to_be_bytes()
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}
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@ -727,8 +730,9 @@ impl f32 {
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/// assert_eq!(bytes, [0x00, 0x00, 0x48, 0x41]);
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn to_le_bytes(self) -> [u8; 4] {
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pub const fn to_le_bytes(self) -> [u8; 4] {
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self.to_bits().to_le_bytes()
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}
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@ -755,8 +759,9 @@ impl f32 {
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/// );
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn to_ne_bytes(self) -> [u8; 4] {
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pub const fn to_ne_bytes(self) -> [u8; 4] {
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self.to_bits().to_ne_bytes()
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}
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@ -769,8 +774,9 @@ impl f32 {
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/// assert_eq!(value, 12.5);
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn from_be_bytes(bytes: [u8; 4]) -> Self {
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pub const fn from_be_bytes(bytes: [u8; 4]) -> Self {
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Self::from_bits(u32::from_be_bytes(bytes))
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}
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@ -783,8 +789,9 @@ impl f32 {
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/// assert_eq!(value, 12.5);
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn from_le_bytes(bytes: [u8; 4]) -> Self {
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pub const fn from_le_bytes(bytes: [u8; 4]) -> Self {
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Self::from_bits(u32::from_le_bytes(bytes))
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}
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@ -808,8 +815,9 @@ impl f32 {
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/// assert_eq!(value, 12.5);
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn from_ne_bytes(bytes: [u8; 4]) -> Self {
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pub const fn from_ne_bytes(bytes: [u8; 4]) -> Self {
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Self::from_bits(u32::from_ne_bytes(bytes))
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}
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@ -666,8 +666,9 @@ impl f64 {
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///
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/// ```
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#[stable(feature = "float_bits_conv", since = "1.20.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn to_bits(self) -> u64 {
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pub const fn to_bits(self) -> u64 {
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// SAFETY: `u64` is a plain old datatype so we can always transmute to it
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unsafe { mem::transmute(self) }
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}
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@ -709,8 +710,9 @@ impl f64 {
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/// assert_eq!(v, 12.5);
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/// ```
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#[stable(feature = "float_bits_conv", since = "1.20.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn from_bits(v: u64) -> Self {
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pub const fn from_bits(v: u64) -> Self {
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// SAFETY: `u64` is a plain old datatype so we can always transmute from it
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// It turns out the safety issues with sNaN were overblown! Hooray!
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unsafe { mem::transmute(v) }
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@ -726,8 +728,9 @@ impl f64 {
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/// assert_eq!(bytes, [0x40, 0x29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]);
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn to_be_bytes(self) -> [u8; 8] {
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pub const fn to_be_bytes(self) -> [u8; 8] {
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self.to_bits().to_be_bytes()
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}
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@ -741,8 +744,9 @@ impl f64 {
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/// assert_eq!(bytes, [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x29, 0x40]);
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn to_le_bytes(self) -> [u8; 8] {
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pub const fn to_le_bytes(self) -> [u8; 8] {
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self.to_bits().to_le_bytes()
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}
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@ -769,8 +773,9 @@ impl f64 {
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/// );
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn to_ne_bytes(self) -> [u8; 8] {
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pub const fn to_ne_bytes(self) -> [u8; 8] {
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self.to_bits().to_ne_bytes()
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}
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@ -783,8 +788,9 @@ impl f64 {
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/// assert_eq!(value, 12.5);
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn from_be_bytes(bytes: [u8; 8]) -> Self {
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pub const fn from_be_bytes(bytes: [u8; 8]) -> Self {
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Self::from_bits(u64::from_be_bytes(bytes))
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}
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@ -797,8 +803,9 @@ impl f64 {
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/// assert_eq!(value, 12.5);
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn from_le_bytes(bytes: [u8; 8]) -> Self {
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pub const fn from_le_bytes(bytes: [u8; 8]) -> Self {
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Self::from_bits(u64::from_le_bytes(bytes))
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}
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@ -822,8 +829,9 @@ impl f64 {
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/// assert_eq!(value, 12.5);
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/// ```
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#[stable(feature = "float_to_from_bytes", since = "1.40.0")]
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#[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
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#[inline]
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pub fn from_ne_bytes(bytes: [u8; 8]) -> Self {
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pub const fn from_ne_bytes(bytes: [u8; 8]) -> Self {
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Self::from_bits(u64::from_ne_bytes(bytes))
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}
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