alias.rs - source

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memoffset

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miniz_oxide

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pathdiff

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quote

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regex

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regex_syntax

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ryu

buffer

pretty

exponent.rs mantissa.rs mod.rs

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same_file

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private

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ser

fmt.rs impls.rs impossible.rs mod.rs

integer128.rs lib.rs macros.rs

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target_spec

errors.rs lib.rs platform.rs simple_eval.rs spec.rs triple.rs

termcolor

textwrap

core.rs indentation.rs lib.rs word_separators.rs word_splitters.rs wrap_algorithms.rs

time

display.rs duration.rs lib.rs parse.rs sys.rs

toml

datetime.rs de.rs lib.rs macros.rs map.rs ser.rs spanned.rs tokens.rs value.rs

twox_hash

lib.rs sixty_four.rs thirty_two.rs xxh3.rs

unicode_xid

lib.rs tables.rs

utf8parse

lib.rs types.rs

vte

definitions.rs lib.rs params.rs table.rs

vte_generate_state_changes

walkdir

dent.rs error.rs lib.rs util.rs

//! Aliases and traits to simplify float-parsing.

use crate::float::*;
use crate::util::*;
use super::bignum::ToBigfloat;
use super::errors::FloatErrors;

// TRAITS

/// Trait to simplify type signatures for atof.
pub(super) trait FloatType:
    FloatRounding<u64> +
    FloatRounding<u128> +
    StablePower
{
    type Mantissa: Mantissa;
    type ExtendedFloat: ExtendedFloatType<Self>;
}

impl FloatType for f32 {
    type Mantissa = Self::Unsigned;
    type ExtendedFloat = ExtendedFloat<Self::Mantissa>;
}

impl FloatType for f64 {
    type Mantissa = Self::Unsigned;
    type ExtendedFloat = ExtendedFloat<Self::Mantissa>;
}

/// Trait for a useable mantissa.
pub(super) trait MantissaType:
    Mantissa +
    FloatErrors
{}

impl MantissaType for u64 {
}

impl MantissaType for u128 {
}

/// Trait for extended-float types.
pub(super) trait ExtendedFloatType<F: FloatType>:
    ToBigfloat<F::Mantissa> +
    From<F>
{
    // I really wish I had any other choice **other** than getters and setters,
    // but since we can't specify fields in traits, and we can't use properties...
    // C'est la vie.
    fn mant(&self) -> F::Mantissa;
    fn exp(&self) -> i32;
    fn set_mant(&mut self, mant: F::Mantissa);
    fn set_exp(&mut self, exp: i32);
}

impl ExtendedFloatType<f32> for ExtendedFloat<u32> {
    perftools_inline!{
    fn mant(&self) -> u32 {
        self.mant
    }}

    perftools_inline!{
    fn exp(&self) -> i32 {
        self.exp
    }}

    perftools_inline!{
    fn set_mant(&mut self, mant: u32) {
        self.mant = mant;
    }}

    perftools_inline!{
    fn set_exp(&mut self, exp: i32) {
        self.exp = exp;
    }}
}

impl ExtendedFloatType<f64> for ExtendedFloat<u64> {
    perftools_inline!{
    fn mant(&self) -> u64 {
        self.mant
    }}

    perftools_inline!{
    fn exp(&self) -> i32 {
        self.exp
    }}

    perftools_inline!{
    fn set_mant(&mut self, mant: u64) {
        self.mant = mant;
    }}

    perftools_inline!{
    fn set_exp(&mut self, exp: i32) {
        self.exp = exp;
    }}
}