# Primitive Type f32

1.0.0 · [−]
Expand description

A 32-bit floating point type (specifically, the “binary32” type defined in IEEE 754-2008).

This type can represent a wide range of decimal numbers, like `3.5`, `27`, `-113.75`, `0.0078125`, `34359738368`, `0`, `-1`. So unlike integer types (such as `i32`), floating point types can represent non-integer numbers, too.

However, being able to represent this wide range of numbers comes at the cost of precision: floats can only represent some of the real numbers and calculation with floats round to a nearby representable number. For example, `5.0` and `1.0` can be exactly represented as `f32`, but `1.0 / 5.0` results in `0.20000000298023223876953125` since `0.2` cannot be exactly represented as `f32`. Note, however, that printing floats with `println` and friends will often discard insignificant digits: `println!("{}", 1.0f32 / 5.0f32)` will print `0.2`.

Additionally, `f32` can represent some special values:

- −0.0: IEEE 754 floating point numbers have a bit that indicates their sign, so −0.0 is a possible value. For comparison −0.0 = +0.0, but floating point operations can carry the sign bit through arithmetic operations. This means −0.0 × +0.0 produces −0.0 and a negative number rounded to a value smaller than a float can represent also produces −0.0.
- ∞ and −∞: these result from calculations like `1.0 / 0.0`.
- NaN (not a number): this value results from calculations like `(-1.0).sqrt()`. NaN has some potentially unexpected behavior: it is unequal to any float, including itself! It is also neither smaller nor greater than any float, making it impossible to sort. Lastly, it is considered infectious as almost all calculations where one of the operands is NaN will also result in NaN.

For more information on floating point numbers, see Wikipedia.

See also the `std::f32::consts` module.

## Implementations

source

### impl f32

1.43.0 · source

#### pub const RADIX: u32

The radix or base of the internal representation of `f32`.

1.43.0 · source

#### pub const MANTISSA_DIGITS: u32

Number of significant digits in base 2.

1.43.0 · source

#### pub const DIGITS: u32

Approximate number of significant digits in base 10.

1.43.0 · source

#### pub const EPSILON: f32

Machine epsilon value for `f32`.

This is the difference between `1.0` and the next larger representable number.

1.43.0 · source

#### pub const MIN: f32

Smallest finite `f32` value.

1.43.0 · source

#### pub const MIN_POSITIVE: f32

Smallest positive normal `f32` value.

1.43.0 · source

#### pub const MAX: f32

Largest finite `f32` value.

1.43.0 · source

#### pub const MIN_EXP: i32

One greater than the minimum possible normal power of 2 exponent.

1.43.0 · source

#### pub const MAX_EXP: i32

Maximum possible power of 2 exponent.

1.43.0 · source

#### pub const MIN_10_EXP: i32

Minimum possible normal power of 10 exponent.

1.43.0 · source

#### pub const MAX_10_EXP: i32

Maximum possible power of 10 exponent.

1.43.0 · source

#### pub const NAN: f32

Not a Number (NaN).

1.43.0 · source

#### pub const INFINITY: f32

Infinity (∞).

1.43.0 · source

#### pub const NEG_INFINITY: f32

Negative infinity (−∞).

const: unstable · source

#### pub fn is_nan(self) -> bool

Returns `true` if this value is `NaN`.

    let nan = f32::NAN;
    let f = 7.0_f32;

    assert!(nan.is_nan());
    assert!(!f.is_nan());

Run
const: unstable · source

#### pub fn is_infinite(self) -> bool

Returns `true` if this value is positive infinity or negative infinity, and `false` otherwise.

    let f = 7.0f32;
    let inf = f32::INFINITY;
    let neg_inf = f32::NEG_INFINITY;
    let nan = f32::NAN;

    assert!(!f.is_infinite());
    assert!(!nan.is_infinite());

    assert!(inf.is_infinite());
    assert!(neg_inf.is_infinite());

Run
const: unstable · source

#### pub fn is_finite(self) -> bool

Returns `true` if this number is neither infinite nor `NaN`.

    let f = 7.0f32;
    let inf = f32::INFINITY;
    let neg_inf = f32::NEG_INFINITY;
    let nan = f32::NAN;

    assert!(f.is_finite());

    assert!(!nan.is_finite());
    assert!(!inf.is_finite());
    assert!(!neg_inf.is_finite());

Run
1.53.0 (const: unstable) · source

#### pub fn is_subnormal(self) -> bool

Returns `true` if the number is subnormal.

    let min = f32::MIN_POSITIVE; // 1.17549435e-38f32
    let max = f32::MAX;
    let lower_than_min = 1.0e-40_f32;
    let zero = 0.0_f32;

    assert!(!min.is_subnormal());
    assert!(!max.is_subnormal());

    assert!(!zero.is_subnormal());
    assert!(!f32::NAN.is_subnormal());
    assert!(!f32::INFINITY.is_subnormal());
    // Values between `0` and `min` are Subnormal.
    assert!(lower_than_min.is_subnormal());

Run
const: unstable · source

#### pub fn is_normal(self) -> bool

Returns `true` if the number is neither zero, infinite, subnormal, or `NaN`.

    let min = f32::MIN_POSITIVE; // 1.17549435e-38f32
    let max = f32::MAX;
    let lower_than_min = 1.0e-40_f32;
    let zero = 0.0_f32;

    assert!(min.is_normal());
    assert!(max.is_normal());

    assert!(!zero.is_normal());
    assert!(!f32::NAN.is_normal());
    assert!(!f32::INFINITY.is_normal());
    // Values between `0` and `min` are Subnormal.
    assert!(!lower_than_min.is_normal());

Run
const: unstable · source

#### pub fn classify(self) -> FpCategory

Returns the floating point category of the number. If only one property is going to be tested, it is generally faster to use the specific predicate instead.

    use std::num::FpCategory;

    let num = 12.4_f32;
    let inf = f32::INFINITY;

    assert_eq!(num.classify(), FpCategory::Normal);
    assert_eq!(inf.classify(), FpCategory::Infinite);

Run
const: unstable · source

#### pub fn is_sign_positive(self) -> bool

Returns `true` if `self` has a positive sign, including `+0.0`, `NaN`s with positive sign bit and positive infinity.

    let f = 7.0_f32;
    let g = -7.0_f32;

    assert!(f.is_sign_positive());
    assert!(!g.is_sign_positive());

Run
const: unstable · source

#### pub fn is_sign_negative(self) -> bool

Returns `true` if `self` has a negative sign, including `-0.0`, `NaN`s with negative sign bit and negative infinity.

    let f = 7.0f32;
    let g = -7.0f32;

    assert!(!f.is_sign_negative());
    assert!(g.is_sign_negative());

Run
source

#### pub fn recip(self) -> f32

Takes the reciprocal (inverse) of a number, `1/x`.

    let x = 2.0_f32;
    let abs_difference = (x.recip() - (1.0 / x)).abs();

    assert!(abs_difference <= f32::EPSILON);

Run
1.7.0 · source

#### pub fn to_degrees(self) -> f32

Converts radians to degrees.

    let angle = std::f32::consts::PI;

    let abs_difference = (angle.to_degrees() - 180.0).abs();

    assert!(abs_difference <= f32::EPSILON);

Run
1.7.0 · source

#### pub fn to_radians(self) -> f32

Converts degrees to radians.

    let angle = 180.0f32;

    let abs_difference = (angle.to_radians() - std::f32::consts::PI).abs();

    assert!(abs_difference <= f32::EPSILON);

Run
source

#### pub fn max(self, other: f32) -> f32

Returns the maximum of the two numbers.

Follows the IEEE-754 2008 semantics for maxNum, except for handling of signaling NaNs. This matches the behavior of libm’s fmax.

    let x = 1.0f32;
    let y = 2.0f32;

    assert_eq!(x.max(y), y);

Run

If one of the arguments is NaN, then the other argument is returned.

source

#### pub fn min(self, other: f32) -> f32

Returns the minimum of the two numbers.

Follows the IEEE-754 2008 semantics for minNum, except for handling of signaling NaNs. This matches the behavior of libm’s fmin.

    let x = 1.0f32;
    let y = 2.0f32;

    assert_eq!(x.min(y), x);

Run

If one of the arguments is NaN, then the other argument is returned.

source

#### pub fn maximum(self, other: f32) -> f32

🔬 This is a nightly-only experimental API. (`float_minimum_maximum` #91079)

Returns the maximum of the two numbers, propagating NaNs.

This returns NaN when either argument is NaN, as opposed to `f32::max` which only returns NaN when both arguments are NaN.

    #![feature(float_minimum_maximum)]
    let x = 1.0f32;
    let y = 2.0f32;

    assert_eq!(x.maximum(y), y);
    assert!(x.maximum(f32::NAN).is_nan());

Run

If one of the arguments is NaN, then NaN is returned. Otherwise this returns the greater of the two numbers. For this operation, -0.0 is considered to be less than +0.0. Note that this follows the semantics specified in IEEE 754-2019.

source

#### pub fn minimum(self, other: f32) -> f32

🔬 This is a nightly-only experimental API. (`float_minimum_maximum` #91079)

Returns the minimum of the two numbers, propagating NaNs.

This returns NaN when either argument is NaN, as opposed to `f32::min` which only returns NaN when both arguments are NaN.

    #![feature(float_minimum_maximum)]
    let x = 1.0f32;
    let y = 2.0f32;

    assert_eq!(x.minimum(y), x);
    assert!(x.minimum(f32::NAN).is_nan());

Run

If one of the arguments is NaN, then NaN is returned. Otherwise this returns the lesser of the two numbers. For this operation, -0.0 is considered to be less than +0.0. Note that this follows the semantics specified in IEEE 754-2019.

1.44.0 · source

#### pub unsafe fn to_int_unchecked<Int>(self) -> Int where
Self: FloatToInt<Int>,

Rounds toward zero and converts to any primitive integer type, assuming that the value is finite and fits in that type.

    let value = 4.6_f32;
    let rounded = unsafe { value.to_int_unchecked::<u16>() };
    assert_eq!(rounded, 4);

    let value = -128.9_f32;
    let rounded = unsafe { value.to_int_unchecked::<i8>() };
    assert_eq!(rounded, i8::MIN);

Run

##### Safety

The value must:

- Not be `NaN`
- Not be infinite
- Be representable in the return type `Int`, after truncating off its fractional part

1.20.0 (const: unstable) · source

#### pub fn to_bits(self) -> u32

Raw transmutation to `u32`.

This is currently identical to `transmute::<f32, u32>(self)` on all platforms.

See `from_bits` for some discussion of the portability of this operation (there are almost no issues).

Note that this function is distinct from `as` casting, which attempts to preserve the numeric value, and not the bitwise value.

##### Examples

    assert_ne!((1f32).to_bits(), 1f32 as u32); // to_bits() is not casting!
    assert_eq!((12.5f32).to_bits(), 0x41480000);

Run
1.20.0 (const: unstable) · source

#### pub fn from_bits(v: u32) -> Self

Raw transmutation from `u32`.

This is currently identical to `transmute::<u32, f32>(v)` on all platforms. It turns out this is incredibly portable, for two reasons:

- Floats and Ints have the same endianness on all supported platforms.
- IEEE-754 very precisely specifies the bit layout of floats.

However there is one caveat: prior to the 2008 version of IEEE-754, how to interpret the NaN signaling bit wasn’t actually specified. Most platforms (notably x86 and ARM) picked the interpretation that was ultimately standardized in 2008, but some didn’t (notably MIPS). As a result, all signaling NaNs on MIPS are quiet NaNs on x86, and vice-versa.

Rather than trying to preserve signaling-ness cross-platform, this implementation favors preserving the exact bits. This means that any payloads encoded in NaNs will be preserved even if the result of this method is sent over the network from an x86 machine to a MIPS one.

If the results of this method are only manipulated by the same architecture that produced them, then there is no portability concern.

If the input isn’t NaN, then there is no portability concern.

If you don’t care about signalingness (very likely), then there is no portability concern.

Note that this function is distinct from `as` casting, which attempts to preserve the numeric value, and not the bitwise value.

##### Examples

    let v = f32::from_bits(0x41480000);
    assert_eq!(v, 12.5);

Run
1.40.0 (const: unstable) · source

#### pub fn to_be_bytes(self) -> [u8; 4]

Return the memory representation of this floating point number as a byte array in big-endian (network) byte order.

##### Examples

    let bytes = 12.5f32.to_be_bytes();
    assert_eq!(bytes, [0x41, 0x48, 0x00, 0x00]);

Run
1.40.0 (const: unstable) · source

#### pub fn to_le_bytes(self) -> [u8; 4]

Return the memory representation of this floating point number as a byte array in little-endian byte order.

##### Examples

    let bytes = 12.5f32.to_le_bytes();
    assert_eq!(bytes, [0x00, 0x00, 0x48, 0x41]);

Run
1.40.0 (const: unstable) · source

#### pub fn to_ne_bytes(self) -> [u8; 4]

Return the memory representation of this floating point number as a byte array in native byte order.

As the target platform’s native endianness is used, portable code should use `to_be_bytes` or `to_le_bytes`, as appropriate, instead.

##### Examples

    let bytes = 12.5f32.to_ne_bytes();
    assert_eq!(
        bytes,
        if cfg!(target_endian = "big") {
            [0x41, 0x48, 0x00, 0x00]
        } else {
            [0x00, 0x00, 0x48, 0x41]
        }
    );

Run
1.40.0 (const: unstable) · source

#### pub fn from_be_bytes(bytes: [u8; 4]) -> Self

Create a floating point value from its representation as a byte array in big endian.

##### Examples

    let value = f32::from_be_bytes([0x41, 0x48, 0x00, 0x00]);
    assert_eq!(value, 12.5);

Run
1.40.0 (const: unstable) · source

#### pub fn from_le_bytes(bytes: [u8; 4]) -> Self

Create a floating point value from its representation as a byte array in little endian.

##### Examples

    let value = f32::from_le_bytes([0x00, 0x00, 0x48, 0x41]);
    assert_eq!(value, 12.5);

Run
1.40.0 (const: unstable) · source

#### pub fn from_ne_bytes(bytes: [u8; 4]) -> Self

Create a floating point value from its representation as a byte array in native endian.

As the target platform’s native endianness is used, portable code likely wants to use `from_be_bytes` or `from_le_bytes`, as appropriate instead.

##### Examples

    let value = f32::from_ne_bytes(if cfg!(target_endian = "big") {
        [0x41, 0x48, 0x00, 0x00]
    } else {
        [0x00, 0x00, 0x48, 0x41]
    });
    assert_eq!(value, 12.5);

Run
1.62.0 · source

#### pub fn total_cmp(&self, other: &Self) -> Ordering

Return the ordering between `self` and `other`.

Unlike the standard partial comparison between floating point numbers, this comparison always produces an ordering in accordance to the `totalOrder` predicate as defined in the IEEE 754 (2008 revision) floating point standard. The values are ordered in the following sequence:

- negative quiet NaN
- negative signaling NaN
- negative infinity
- negative numbers
- negative subnormal numbers
- negative zero
- positive zero
- positive subnormal numbers
- positive numbers
- positive infinity
- positive signaling NaN
- positive quiet NaN.

The ordering established by this function does not always agree with the `PartialOrd` and `PartialEq` implementations of `f32`. For example, they consider negative and positive zero equal, while `total_cmp` doesn’t.

The interpretation of the signaling NaN bit follows the definition in the IEEE 754 standard, which may not match the interpretation by some of the older, non-conformant (e.g. MIPS) hardware implementations.

##### Example

    struct GoodBoy {
        name: String,
        weight: f32,
    }

    let mut bois = vec![
        GoodBoy { name: "Pucci".to_owned(), weight: 0.1 },
        GoodBoy { name: "Woofer".to_owned(), weight: 99.0 },
        GoodBoy { name: "Yapper".to_owned(), weight: 10.0 },
        GoodBoy { name: "Chonk".to_owned(), weight: f32::INFINITY },
        GoodBoy { name: "Abs. Unit".to_owned(), weight: f32::NAN },
        GoodBoy { name: "Floaty".to_owned(), weight: -5.0 },
    ];

    bois.sort_by(|a, b| a.weight.total_cmp(&b.weight));

Run
1.50.0 · source

#### pub fn clamp(self, min: f32, max: f32) -> f32

Restrict a value to a certain interval unless it is NaN.

Returns `max` if `self` is greater than `max`, and `min` if `self` is less than `min`. Otherwise this returns `self`.

Note that this function returns NaN if the initial value was NaN as well.

##### Panics

Panics if `min > max`, `min` is NaN, or `max` is NaN.

##### Examples

    assert!((-3.0f32).clamp(-2.0, 1.0) == -2.0);
    assert!((0.0f32).clamp(-2.0, 1.0) == 0.0);
    assert!((2.0f32).clamp(-2.0, 1.0) == 1.0);
    assert!((f32::NAN).clamp(-2.0, 1.0).is_nan());

Run

## Trait Implementations

const: unstable · source

### impl Add<&'_ f32> for f32

#### type Output = <f32 as Add<f32>>::Output

The resulting type after applying the `+` operator.

const: unstable · source

#### fn add(self, other: &f32) -> <f32 as Add<f32>>::Output

Performs the `+` operation. Read more

const: unstable · source

### impl Add<&'_ f32> for &f32

#### type Output = <f32 as Add<f32>>::Output

The resulting type after applying the `+` operator.

const: unstable · source

#### fn add(self, other: &f32) -> <f32 as Add<f32>>::Output

Performs the `+` operation. Read more

const: unstable · source

### impl Add<f32> for f32

#### type Output = f32

The resulting type after applying the `+` operator.

const: unstable · source

#### fn add(self, other: f32) -> f32

Performs the `+` operation. Read more

const: unstable · source

### impl<'a> Add<f32> for &'a f32

#### type Output = <f32 as Add<f32>>::Output

The resulting type after applying the `+` operator.

const: unstable · source

#### fn add(self, other: f32) -> <f32 as Add<f32>>::Output

Performs the `+` operation. Read more

1.22.0 (const: unstable) · source

### impl AddAssign<&'_ f32> for f32

const: unstable · source

#### fn add_assign(&mut self, other: &f32)

Performs the `+=` operation. Read more

1.8.0 (const: unstable) · source

### impl AddAssign<f32> for f32

const: unstable · source

#### fn add_assign(&mut self, other: f32)

Performs the `+=` operation. Read more

const: unstable · source

### impl Clone for f32

const: unstable · source

#### fn clone(&self) -> Self

Returns a copy of the value. Read more

source

#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more

source

### impl Debug for f32

source

#### fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

const: unstable · source

### impl Default for f32

const: unstable · source

#### fn default() -> f32

Returns the default value of `0.0`

source

### impl Display for f32

source

#### fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

const: unstable · source

### impl Div<&'_ f32> for f32

#### type Output = <f32 as Div<f32>>::Output

The resulting type after applying the `/` operator.

const: unstable · source

#### fn div(self, other: &f32) -> <f32 as Div<f32>>::Output

Performs the `/` operation. Read more

const: unstable · source

### impl Div<&'_ f32> for &f32

#### type Output = <f32 as Div<f32>>::Output

The resulting type after applying the `/` operator.

const: unstable · source

#### fn div(self, other: &f32) -> <f32 as Div<f32>>::Output

Performs the `/` operation. Read more

const: unstable · source

### impl Div<f32> for f32

#### type Output = f32

The resulting type after applying the `/` operator.

const: unstable · source

#### fn div(self, other: f32) -> f32

Performs the `/` operation. Read more

const: unstable · source

### impl<'a> Div<f32> for &'a f32

#### type Output = <f32 as Div<f32>>::Output

The resulting type after applying the `/` operator.

const: unstable · source

#### fn div(self, other: f32) -> <f32 as Div<f32>>::Output

Performs the `/` operation. Read more

1.22.0 (const: unstable) · source

### impl DivAssign<&'_ f32> for f32

const: unstable · source

#### fn div_assign(&mut self, other: &f32)

Performs the `/=` operation. Read more

1.8.0 (const: unstable) · source

### impl DivAssign<f32> for f32

const: unstable · source

#### fn div_assign(&mut self, other: f32)

Performs the `/=` operation. Read more

1.6.0 (const: unstable) · source

### impl From<f32> for f64

const: unstable · source

#### fn from(small: f32) -> Self

Converts `f32` to `f64` losslessly.

1.6.0 (const: unstable) · source

### impl From<i16> for f32

const: unstable · source

#### fn from(small: i16) -> Self

Converts `i16` to `f32` losslessly.

1.6.0 (const: unstable) · source

### impl From<i8> for f32

const: unstable · source

#### fn from(small: i8) -> Self

Converts `i8` to `f32` losslessly.

1.6.0 (const: unstable) · source

### impl From<u16> for f32

const: unstable · source

#### fn from(small: u16) -> Self

Converts `u16` to `f32` losslessly.

1.6.0 (const: unstable) · source

### impl From<u8> for f32

const: unstable · source

#### fn from(small: u8) -> Self

Converts `u8` to `f32` losslessly.

source

### impl FromStr for f32

source

#### fn from_str(src: &str) -> Result<Self, ParseFloatError>

Converts a string in base 10 to a float. Accepts an optional decimal exponent.

This function accepts strings such as

- ‘3.14’
- ‘-3.14’
- ‘2.5E10’, or equivalently, ‘2.5e10’
- ‘2.5E-10’
- ‘5.’
- ‘.5’, or, equivalently, ‘0.5’
- ‘inf’, ‘-inf’, ‘+infinity’, ‘NaN’

Note that alphabetical characters are not case-sensitive.

Leading and trailing whitespace represent an error.

##### Grammar

All strings that adhere to the following EBNF grammar when lowercased will result in an `Ok` being returned:

    Float  ::= Sign? ( 'inf' | 'infinity' | 'nan' | Number )
    Number ::= ( Digit+ |
                 '.' Digit* |
                 Digit+ '.' Digit* |
                 Digit* '.' Digit+ ) Exp?
    Exp    ::= 'e' Sign? Digit+
    Sign   ::= [+-]
    Digit  ::= [0-9]

##### Arguments

- src - A string

##### Return value

`Err(ParseFloatError)` if the string did not represent a valid number. Otherwise, `Ok(n)` where `n` is the floating-point number represented by `src`.

#### type Err = ParseFloatError

The associated error which can be returned from parsing.

source

### impl LowerExp for f32

source

#### fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

const: unstable · source

### impl Mul<&'_ f32> for f32

#### type Output = <f32 as Mul<f32>>::Output

The resulting type after applying the `*` operator.

const: unstable · source

#### fn mul(self, other: &f32) -> <f32 as Mul<f32>>::Output

Performs the `*` operation. Read more

const: unstable · source

### impl Mul<&'_ f32> for &f32

#### type Output = <f32 as Mul<f32>>::Output

The resulting type after applying the `*` operator.

const: unstable · source

#### fn mul(self, other: &f32) -> <f32 as Mul<f32>>::Output

Performs the `*` operation. Read more

const: unstable · source

### impl Mul<f32> for f32

#### type Output = f32

The resulting type after applying the `*` operator.

const: unstable · source

#### fn mul(self, other: f32) -> f32

Performs the `*` operation. Read more

const: unstable · source

### impl<'a> Mul<f32> for &'a f32

#### type Output = <f32 as Mul<f32>>::Output

The resulting type after applying the `*` operator.

const: unstable · source

#### fn mul(self, other: f32) -> <f32 as Mul<f32>>::Output

Performs the `*` operation. Read more

1.22.0 (const: unstable) · source

### impl MulAssign<&'_ f32> for f32

const: unstable · source

#### fn mul_assign(&mut self, other: &f32)

Performs the `*=` operation. Read more

1.8.0 (const: unstable) · source

### impl MulAssign<f32> for f32

const: unstable · source

#### fn mul_assign(&mut self, other: f32)

Performs the `*=` operation. Read more

const: unstable · source

### impl Neg for f32

#### type Output = f32

The resulting type after applying the `-` operator.

const: unstable · source

#### fn neg(self) -> f32

Performs the unary `-` operation. Read more

const: unstable · source

### impl Neg for &f32

#### type Output = <f32 as Neg>::Output

The resulting type after applying the `-` operator.

const: unstable · source

#### fn neg(self) -> <f32 as Neg>::Output

Performs the unary `-` operation. Read more

source

### impl PartialEq<f32> for f32

source

#### fn eq(&self, other: &f32) -> bool

This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

source

#### fn ne(&self, other: &f32) -> bool

This method tests for `!=`.

source

### impl PartialOrd<f32> for f32

source

#### fn partial_cmp(&self, other: &f32) -> Option<Ordering>

This method returns an ordering between `self` and `other` values if one exists. Read more

source

#### fn lt(&self, other: &f32) -> bool

This method tests less than (for `self` and `other`) and is used by the `<` operator. Read more

source

#### fn le(&self, other: &f32) -> bool

This method tests less than or equal to (for `self` and `other`) and is used by the `<=` operator. Read more

source

#### fn ge(&self, other: &f32) -> bool

This method tests greater than or equal to (for `self` and `other`) and is used by the `>=` operator. Read more

source

#### fn gt(&self, other: &f32) -> bool

This method tests greater than (for `self` and `other`) and is used by the `>` operator. Read more

1.12.0 · source

### impl<'a> Product<&'a f32> for f32

source

#### fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self

Method which takes an iterator and generates `Self` from the elements by multiplying the items. Read more

1.12.0 · source

### impl Product<f32> for f32

source

#### fn product<I: Iterator<Item = Self>>(iter: I) -> Self

Method which takes an iterator and generates `Self` from the elements by multiplying the items. Read more

const: unstable · source

### impl Rem<&'_ f32> for f32

#### type Output = <f32 as Rem<f32>>::Output

The resulting type after applying the `%` operator.

const: unstable · source

#### fn rem(self, other: &f32) -> <f32 as Rem<f32>>::Output

Performs the `%` operation. Read more

const: unstable · source

### impl Rem<&'_ f32> for &f32

#### type Output = <f32 as Rem<f32>>::Output

The resulting type after applying the `%` operator.

const: unstable · source

#### fn rem(self, other: &f32) -> <f32 as Rem<f32>>::Output

Performs the `%` operation. Read more

const: unstable · source

### impl Rem<f32> for f32

The remainder from the division of two floats.

The remainder has the same sign as the dividend and is computed as: `x - (x / y).trunc() * y`.

#### Examples

    let x: f32 = 50.50;
    let y: f32 = 8.125;
    let remainder = x - (x / y).trunc() * y;

    // The answer to both operations is 1.75
    assert_eq!(x % y, remainder);

Run

#### type Output = f32

The resulting type after applying the `%` operator.

const: unstable · source

#### fn rem(self, other: f32) -> f32

Performs the `%` operation. Read more

const: unstable · source

### impl<'a> Rem<f32> for &'a f32

#### type Output = <f32 as Rem<f32>>::Output

The resulting type after applying the `%` operator.

const: unstable · source

#### fn rem(self, other: f32) -> <f32 as Rem<f32>>::Output

Performs the `%` operation. Read more

1.22.0 (const: unstable) · source

### impl RemAssign<&'_ f32> for f32

const: unstable · source

#### fn rem_assign(&mut self, other: &f32)

Performs the `%=` operation. Read more

1.8.0 (const: unstable) · source

### impl RemAssign<f32> for f32

const: unstable · source

#### fn rem_assign(&mut self, other: f32)

Performs the `%=` operation. Read more

source

### impl SimdElement for f32

#### type Mask = i32

🔬 This is a nightly-only experimental API. (`portable_simd` #86656)

The mask element type corresponding to this element type.

const: unstable · source

### impl Sub<&'_ f32> for f32

#### type Output = <f32 as Sub<f32>>::Output

The resulting type after applying the `-` operator.

const: unstable · source

#### fn sub(self, other: &f32) -> <f32 as Sub<f32>>::Output

Performs the `-` operation. Read more

const: unstable · source

### impl Sub<&'_ f32> for &f32

#### type Output = <f32 as Sub<f32>>::Output

The resulting type after applying the `-` operator.

const: unstable · source

#### fn sub(self, other: &f32) -> <f32 as Sub<f32>>::Output

Performs the `-` operation. Read more

const: unstable · source

### impl Sub<f32> for f32

#### type Output = f32

The resulting type after applying the `-` operator.

const: unstable · source

#### fn sub(self, other: f32) -> f32

Performs the `-` operation. Read more

const: unstable · source

### impl<'a> Sub<f32> for &'a f32

#### type Output = <f32 as Sub<f32>>::Output

The resulting type after applying the `-` operator.

const: unstable · source

#### fn sub(self, other: f32) -> <f32 as Sub<f32>>::Output

Performs the `-` operation. Read more

1.22.0 (const: unstable) · source

### impl SubAssign<&'_ f32> for f32

const: unstable · source

#### fn sub_assign(&mut self, other: &f32)

Performs the `-=` operation. Read more

1.8.0 (const: unstable) · source

### impl SubAssign<f32> for f32

const: unstable · source

#### fn sub_assign(&mut self, other: f32)

Performs the `-=` operation. Read more

1.12.0 · source

### impl<'a> Sum<&'a f32> for f32

source

#### fn sum<I: Iterator<Item = &'a Self>>(iter: I) -> Self

Method which takes an iterator and generates `Self` from the elements by “summing up” the items. Read more

1.12.0 · source

### impl Sum<f32> for f32

source

#### fn sum<I: Iterator<Item = Self>>(iter: I) -> Self

Method which takes an iterator and generates `Self` from the elements by “summing up” the items. Read more

source

### impl UpperExp for f32

source

#### fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

source

### impl Copy for f32

source

### impl FloatToInt<i128> for f32

source

### impl FloatToInt<i16> for f32

source

### impl FloatToInt<i32> for f32

source

### impl FloatToInt<i64> for f32

source

### impl FloatToInt<i8> for f32

source

### impl FloatToInt<isize> for f32

source

### impl FloatToInt<u128> for f32

source

### impl FloatToInt<u16> for f32

source

### impl FloatToInt<u32> for f32

source

### impl FloatToInt<u64> for f32

source

### impl FloatToInt<u8> for f32

source

### impl FloatToInt<usize> for f32