libm/math/arch/
mod.rs

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1//! Architecture-specific routines and operations.
2//!
3//! LLVM will already optimize calls to some of these in cases that there are hardware
4//! instructions. Providing an implementation here just ensures that the faster implementation
5//! is used when calling the function directly. This helps anyone who uses `libm` directly, as
6//! well as improving things when these routines are called as part of other implementations.
7
8// Most implementations should be defined here, to ensure they are not made available when
9// soft floats are required.
10#[cfg(arch_enabled)]
11cfg_if! {
12    if #[cfg(all(target_arch = "wasm32", intrinsics_enabled))] {
13        mod wasm32;
14        pub use wasm32::{
15            ceil, ceilf, fabs, fabsf, floor, floorf, rint, rintf, sqrt, sqrtf, trunc, truncf,
16        };
17    } else if #[cfg(target_feature = "sse2")] {
18        mod x86;
19        pub use x86::{sqrt, sqrtf, fma, fmaf};
20    } else if #[cfg(all(
21        any(target_arch = "aarch64", target_arch = "arm64ec"),
22        target_feature = "neon"
23    ))] {
24        mod aarch64;
25
26        pub use aarch64::{
27            fma,
28            fmaf,
29            rint,
30            rintf,
31            sqrt,
32            sqrtf,
33        };
34
35        #[cfg(all(f16_enabled, target_feature = "fp16"))]
36        pub use aarch64::{
37            rintf16,
38            sqrtf16,
39        };
40    }
41}
42
43// There are certain architecture-specific implementations that are needed for correctness
44// even with `force-soft-float`. These are configured here.
45cfg_if! {
46    if #[cfg(all(target_arch = "x86", not(target_feature = "sse2")))] {
47        mod i586;
48        pub use i586::{ceil, floor};
49    }
50}
libm/math/arch/mod.rs

libm/math/arch/
mod.rs
