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More attempts for intrinsics example

master
Alex Crichton 2018-05-12 07:21:36 -07:00
parent e423f3c64b
commit 5f9bbc924b
1 changed files with 3 additions and 23 deletions
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26
examples/intrinsics.rs
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@ -15,19 +15,11 @@
#![feature(global_allocator)]
#![feature(allocator_api)]
#![cfg_attr(windows, feature(panic_unwind))]
#![no_core]
extern crate core;
#![no_std]
#[cfg(not(thumb))]
extern crate alloc_system;
extern crate compiler_builtins;
#[cfg(windows)]
extern crate panic_unwind;
#[cfg(not(thumb))]
#[global_allocator]
static A: alloc_system::System = alloc_system::System;
#[link(name = "c")]
extern {}
// NOTE cfg(not(thumbv6m)) means that the operation is not supported on ARMv6-M at all. Not even
// compiler-rt provides a C/assembly implementation.
@ -38,8 +30,6 @@ static A: alloc_system::System = alloc_system::System;
// have an additional comment: the function name is the ARM name for the intrinsic and the comment
// in the non-ARM name for the intrinsic.
mod intrinsics {
use core::num::Float;
// trunccdfsf2
pub fn aeabi_d2f(x: f64) -> f32 {
x as f32
@ -299,14 +289,6 @@ mod intrinsics {
a * b
}
pub fn powidf2(a: f64, b: i32) -> f64 {
a.powi(b)
}
pub fn powisf2(a: f32, b: i32) -> f32 {
a.powi(b)
}
pub fn umoddi3(a: u64, b: u64) -> u64 {
a % b
}
@ -398,8 +380,6 @@ fn run() {
bb(aeabi_uldivmod(bb(2), bb(3)));
bb(moddi3(bb(2), bb(3)));
bb(mulodi4(bb(2), bb(3)));
bb(powidf2(bb(2.), bb(3)));
bb(powisf2(bb(2.), bb(3)));
bb(umoddi3(bb(2), bb(3)));
bb(muloti4(bb(2), bb(2)));
bb(multi3(bb(2), bb(2)));