c9d4ad07c4
It is simply defined as `f64` across every platform right now. A use case hasn't been presented for a `float` type defined as the highest precision floating point type implemented in hardware on the platform. Performance-wise, using the smallest precision correct for the use case greatly saves on cache space and allows for fitting more numbers into SSE/AVX registers. If there was a use case, this could be implemented as simply a type alias or a struct thanks to `#[cfg(...)]`. Closes #6592 The mailing list thread, for reference: https://mail.mozilla.org/pipermail/rust-dev/2013-July/004632.html
108 lines
2.2 KiB
Rust
108 lines
2.2 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Gdb doesn't know about UTF-32 character encoding and will print a rust char as only
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// its numerical value.
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// compile-flags:-Z extra-debug-info
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// debugger:rbreak zzz
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// debugger:run
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// debugger:finish
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// debugger:print *bool_ref
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// check:$1 = true
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// debugger:print *int_ref
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// check:$2 = -1
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// debugger:print *char_ref
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// check:$3 = 97
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// debugger:print/d *i8_ref
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// check:$4 = 68
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// debugger:print *i16_ref
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// check:$5 = -16
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// debugger:print *i32_ref
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// check:$6 = -32
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// debugger:print *i64_ref
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// check:$7 = -64
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// debugger:print *uint_ref
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// check:$8 = 1
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// debugger:print/d *u8_ref
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// check:$9 = 100
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// debugger:print *u16_ref
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// check:$10 = 16
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// debugger:print *u32_ref
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// check:$11 = 32
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// debugger:print *u64_ref
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// check:$12 = 64
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// debugger:print *f32_ref
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// check:$13 = 2.5
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// debugger:print *f64_ref
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// check:$14 = 3.5
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#[allow(unused_variable)];
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fn main() {
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let bool_box: @bool = @true;
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let bool_ref: &bool = bool_box;
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let int_box: @int = @-1;
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let int_ref: &int = int_box;
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let char_box: @char = @'a';
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let char_ref: &char = char_box;
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let i8_box: @i8 = @68;
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let i8_ref: &i8 = i8_box;
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let i16_box: @i16 = @-16;
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let i16_ref: &i16 = i16_box;
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let i32_box: @i32 = @-32;
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let i32_ref: &i32 = i32_box;
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let i64_box: @i64 = @-64;
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let i64_ref: &i64 = i64_box;
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let uint_box: @uint = @1;
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let uint_ref: &uint = uint_box;
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let u8_box: @u8 = @100;
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let u8_ref: &u8 = u8_box;
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let u16_box: @u16 = @16;
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let u16_ref: &u16 = u16_box;
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let u32_box: @u32 = @32;
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let u32_ref: &u32 = u32_box;
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let u64_box: @u64 = @64;
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let u64_ref: &u64 = u64_box;
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let f32_box: @f32 = @2.5;
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let f32_ref: &f32 = f32_box;
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let f64_box: @f64 = @3.5;
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let f64_ref: &f64 = f64_box;
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zzz();
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}
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fn zzz() {()}
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