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Apply stability attributes to std::num::Float.

This commit is contained in:
Huon Wilson 2015-01-06 00:00:19 +11:00
parent ae4762761c
commit 65922dd42d
3 changed files with 56 additions and 30 deletions
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2
src/libstd/num/f32.rs
View File

@ -73,7 +73,7 @@ mod cmath {
}
}
#[unstable = "trait is unstable"]
#[stable]
impl Float for f32 {
#[inline]
fn nan() -> f32 { num::Float::nan() }

2
src/libstd/num/f64.rs
View File

@ -81,7 +81,7 @@ mod cmath {
}
}
#[unstable = "trait is unstable"]
#[stable]
impl Float for f64 {
// inlined methods from `num::Float`
#[inline]

82
src/libstd/num/mod.rs
View File

@ -37,6 +37,7 @@ use option::Option;
pub mod strconv;
/// Mathematical operations on primitive floating point numbers.
#[stable]
pub trait Float
: Copy + Clone
+ NumCast
@ -92,57 +93,58 @@ pub trait Float
/// Returns the maximum base-10 exponent that this type can represent.
#[deprecated = "use `std::f32::MAX_10_EXP` or `std::f64::MAX_10_EXP` as appropriate"]
fn max_10_exp(unused_self: Option<Self>) -> int;
/// Returns the smallest finite value that this type can represent.
#[deprecated = "use `std::f32::MIN_VALUE` or `std::f64::MIN_VALUE` as appropriate"]
#[unstable = "unsure about its place in the world"]
fn min_value() -> Self;
/// Returns the smallest normalized positive number that this type can represent.
#[deprecated = "use `std::f32::MIN_POS_VALUE` or `std::f64::MIN_POS_VALUE` as appropriate"]
#[unstable = "unsure about its place in the world"]
fn min_pos_value(unused_self: Option<Self>) -> Self;
/// Returns the largest finite value that this type can represent.
#[deprecated = "use `std::f32::MAX_VALUE` or `std::f64::MAX_VALUE` as appropriate"]
#[unstable = "unsure about its place in the world"]
fn max_value() -> Self;
/// Returns true if this value is NaN and false otherwise.
#[stable]
#[unstable = "position is undecided"]
fn is_nan(self) -> bool;
/// Returns true if this value is positive infinity or negative infinity and
/// false otherwise.
#[stable]
#[unstable = "position is undecided"]
fn is_infinite(self) -> bool;
/// Returns true if this number is neither infinite nor NaN.
#[stable]
#[unstable = "position is undecided"]
fn is_finite(self) -> bool;
/// Returns true if this number is neither zero, infinite, denormal, or NaN.
#[stable]
#[unstable = "position is undecided"]
fn is_normal(self) -> bool;
/// Returns the category that this number falls into.
#[stable]
fn classify(self) -> FpCategory;
/// Returns the mantissa, exponent and sign as integers, respectively.
#[stable]
#[unstable = "signature is undecided"]
fn integer_decode(self) -> (u64, i16, i8);
/// Return the largest integer less than or equal to a number.
#[unstable = "TODO"]
#[stable]
fn floor(self) -> Self;
/// Return the smallest integer greater than or equal to a number.
#[unstable = "TODO"]
#[stable]
fn ceil(self) -> Self;
/// Return the nearest integer to a number. Round half-way cases away from
/// `0.0`.
#[unstable = "TODO"]
#[stable]
fn round(self) -> Self;
/// Return the integer part of a number.
#[unstable = "TODO"]
#[stable]
fn trunc(self) -> Self;
/// Return the fractional part of a number.
#[unstable = "TODO"]
#[stable]
fn fract(self) -> Self;
/// Computes the absolute value of `self`. Returns `Float::nan()` if the
/// number is `Float::nan()`.
#[unstable = "TODO"]
#[stable]
fn abs(self) -> Self;
/// Returns a number that represents the sign of `self`.
///
@ -163,58 +165,59 @@ pub trait Float
/// Fused multiply-add. Computes `(self * a) + b` with only one rounding
/// error. This produces a more accurate result with better performance than
/// a separate multiplication operation followed by an add.
#[stable]
#[unstable = "unsure about its place in the world"]
fn mul_add(self, a: Self, b: Self) -> Self;
/// Take the reciprocal (inverse) of a number, `1/x`.
#[stable]
#[unstable = "unsure about its place in the world"]
fn recip(self) -> Self;
/// Raise a number to an integer power.
///
/// Using this function is generally faster than using `powf`
#[unstable = "TODO"]
#[stable]
fn powi(self, n: i32) -> Self;
/// Raise a number to a floating point power.
#[unstable = "TODO"]
#[stable]
fn powf(self, n: Self) -> Self;
/// Take the square root of a number.
///
/// Returns NaN if `self` is a negative number.
#[unstable = "TODO"]
#[stable]
fn sqrt(self) -> Self;
/// Take the reciprocal (inverse) square root of a number, `1/sqrt(x)`.
#[unstable = "TODO"]
#[unstable = "unsure about its place in the world"]
fn rsqrt(self) -> Self;
/// Returns `e^(self)`, (the exponential function).
#[unstable = "TODO"]
#[stable]
fn exp(self) -> Self;
/// Returns 2 raised to the power of the number, `2^(self)`.
#[unstable = "TODO"]
#[stable]
fn exp2(self) -> Self;
/// Returns the natural logarithm of the number.
#[unstable = "TODO"]
#[stable]
fn ln(self) -> Self;
/// Returns the logarithm of the number with respect to an arbitrary base.
#[unstable = "TODO"]
#[stable]
fn log(self, base: Self) -> Self;
/// Returns the base 2 logarithm of the number.
#[unstable = "TODO"]
#[stable]
fn log2(self) -> Self;
/// Returns the base 10 logarithm of the number.
#[unstable = "TODO"]
#[stable]
fn log10(self) -> Self;
/// Convert radians to degrees.
#[unstable = "TODO"]
#[unstable = "desirability is unclear"]
fn to_degrees(self) -> Self;
/// Convert degrees to radians.
#[unstable = "TODO"]
#[unstable = "desirability is unclear"]
fn to_radians(self) -> Self;
/// Constructs a floating point number created by multiplying `x` by 2
/// raised to the power of `exp`.
#[unstable = "pending integer conventions"]
fn ldexp(x: Self, exp: int) -> Self;
/// Breaks the number into a normalized fraction and a base-2 exponent,
/// satisfying:
@ -222,71 +225,94 @@ pub trait Float
/// * `self = x * pow(2, exp)`
///
/// * `0.5 <= abs(x) < 1.0`
#[unstable = "pending integer conventions"]
fn frexp(self) -> (Self, int);
/// Returns the next representable floating-point value in the direction of
/// `other`.
#[unstable = "unsure about its place in the world"]
fn next_after(self, other: Self) -> Self;
/// Returns the maximum of the two numbers.
#[stable]
fn max(self, other: Self) -> Self;
/// Returns the minimum of the two numbers.
#[stable]
fn min(self, other: Self) -> Self;
/// The positive difference of two numbers. Returns `0.0` if the number is
/// less than or equal to `other`, otherwise the difference between`self`
/// and `other` is returned.
#[unstable = "may be renamed"]
fn abs_sub(self, other: Self) -> Self;
/// Take the cubic root of a number.
#[unstable = "may be renamed"]
fn cbrt(self) -> Self;
/// Calculate the length of the hypotenuse of a right-angle triangle given
/// legs of length `x` and `y`.
#[unstable = "unsure about its place in the world"]
fn hypot(self, other: Self) -> Self;
/// Computes the sine of a number (in radians).
#[stable]
fn sin(self) -> Self;
/// Computes the cosine of a number (in radians).
#[stable]
fn cos(self) -> Self;
/// Computes the tangent of a number (in radians).
#[stable]
fn tan(self) -> Self;
/// Computes the arcsine of a number. Return value is in radians in
/// the range [-pi/2, pi/2] or NaN if the number is outside the range
/// [-1, 1].
#[stable]
fn asin(self) -> Self;
/// Computes the arccosine of a number. Return value is in radians in
/// the range [0, pi] or NaN if the number is outside the range
/// [-1, 1].
#[stable]
fn acos(self) -> Self;
/// Computes the arctangent of a number. Return value is in radians in the
/// range [-pi/2, pi/2];
#[stable]
fn atan(self) -> Self;
/// Computes the four quadrant arctangent of a number, `y`, and another
/// number `x`. Return value is in radians in the range [-pi, pi].
#[stable]
fn atan2(self, other: Self) -> Self;
/// Simultaneously computes the sine and cosine of the number, `x`. Returns
/// `(sin(x), cos(x))`.
#[stable]
fn sin_cos(self) -> (Self, Self);
/// Returns the exponential of the number, minus 1, in a way that is
/// accurate even if the number is close to zero.
#[unstable = "may be renamed"]
fn exp_m1(self) -> Self;
/// Returns the natural logarithm of the number plus 1 (`ln(1+n)`) more
/// accurately than if the operations were performed separately.
#[unstable = "may be renamed"]
fn ln_1p(self) -> Self;
/// Hyperbolic sine function.
#[stable]
fn sinh(self) -> Self;
/// Hyperbolic cosine function.
#[stable]
fn cosh(self) -> Self;
/// Hyperbolic tangent function.
#[stable]
fn tanh(self) -> Self;
/// Inverse hyperbolic sine function.
#[stable]
fn asinh(self) -> Self;
/// Inverse hyperbolic cosine function.
#[stable]
fn acosh(self) -> Self;
/// Inverse hyperbolic tangent function.
#[stable]
fn atanh(self) -> Self;
}