Float128 structv0.1.0

pub struct Float128 {
    // private fields
}

Associated functions

FromBits

pub func FromBits(bits: uint128) -> Float128

The value these bits encode.

Returns: the value that bit pattern stands for

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FromValue

pub func FromValue(value: float128) -> Float128

The value a float128 holds, carried as its bits. Reads the primitive's storage through a raw pointer, as BitsOfFloat64 does: a cast would ask for the number, and what is wanted is its representation.

Returns: the value with that primitive's bit pattern

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Layout

pub func Layout() -> FloatLayout

The format these bits are read under.

Returns: which format the bits are in

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Methods

Value

pub func Value(self: &Float128) -> float128

The float128 these bits encode, for arithmetic on a value that was read or built here. Writes the bits into the primitive's storage through a raw pointer.

Returns: the primitive with this value's bit pattern

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Bits

pub func Bits(self: &Float128) -> uint128

The bits.

Returns: the value's bit pattern

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IsNan

pub func IsNan(self: &Float128) -> bool

Whether this is not a number.

Returns: whether the value is a NaN

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IsInfinite

pub func IsInfinite(self: &Float128) -> bool

Whether this is an infinity of either sign.

Returns: whether the value is either infinity

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IsFinite

pub func IsFinite(self: &Float128) -> bool

Whether this is an ordinary value: neither a NaN nor an infinity.

Returns: whether the value is neither infinite nor a NaN

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IsNegative

pub func IsNegative(self: &Float128) -> bool

Whether the sign bit is set, which a negative zero answers yes to.

Returns: whether the sign bit is set

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FormatWith

pub func FormatWith(
    self: &Float128,
    allocator: Allocator,
    writer: &var TextWriter,
    spec: FormatSpec
) -> ! FormatError

Writes this value's text under spec, taking the working storage from allocator. The shortest decimal that reads back as the same bits, or the digits a precision asks for. This is the only way to render one of these: they implement neither Display nor Debug, because the exact arithmetic their text needs allocates and those protocols offer nowhere to say from where. Reports whatever the writer reported, UnsupportedRequest for any style, and TextFailure(OutOfMemory) where allocator could not supply the working storage.

Returns: success when the complete rendering was accepted

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