From 3c62c7cadf236bb281a7eacef4639abd0f0c3b8f Mon Sep 17 00:00:00 2001 From: "Christoph J. Scherr" Date: Fri, 12 Jan 2024 13:19:22 +0100 Subject: [PATCH] revsqrt has a bin, upload older rust demos --- Cargo.lock | 172 +++++++++++- Cargo.toml | 9 +- members/revsqrt/Cargo.toml | 8 + members/revsqrt/benches/rsqrt-bench.rs | 5 +- members/revsqrt/src/main.rs | 37 +++ members/serde-json-demo/.gitignore | 1 + members/serde-json-demo/Cargo.lock | 369 +++++++++++++++++++++++++ members/serde-json-demo/Cargo.toml | 11 + members/serde-json-demo/src/main.rs | 41 +++ members/slog-demo/.gitignore | 1 + members/slog-demo/Cargo.lock | 16 ++ members/slog-demo/Cargo.toml | 9 + members/slog-demo/src/main.rs | 3 + 13 files changed, 670 insertions(+), 12 deletions(-) create mode 100644 members/revsqrt/src/main.rs create mode 100644 members/serde-json-demo/.gitignore create mode 100644 members/serde-json-demo/Cargo.lock create mode 100644 members/serde-json-demo/Cargo.toml create mode 100644 members/serde-json-demo/src/main.rs create mode 100644 members/slog-demo/.gitignore create mode 100644 members/slog-demo/Cargo.lock create mode 100644 members/slog-demo/Cargo.toml create mode 100644 members/slog-demo/src/main.rs diff --git a/Cargo.lock b/Cargo.lock index 9a0b3ec..769fcc4 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -11,6 +11,21 @@ dependencies = [ "memchr", ] +[[package]] +name = "android-tzdata" +version = "0.1.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0" + +[[package]] +name = "android_system_properties" +version = "0.1.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311" +dependencies = [ + "libc", +] + [[package]] name = "anes" version = "0.1.6" @@ -47,12 +62,36 @@ version = "0.3.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "37b2a672a2cb129a2e41c10b1224bb368f9f37a2b16b612598138befd7b37eb5" +[[package]] +name = "cc" +version = "1.0.83" 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"revsqrt" +path = "src/lib.rs" + +[[bin]] +name = "revsqrt" +path = "src/main.rs" diff --git a/members/revsqrt/benches/rsqrt-bench.rs b/members/revsqrt/benches/rsqrt-bench.rs index d4274f8..5fa3e1c 100644 --- a/members/revsqrt/benches/rsqrt-bench.rs +++ b/members/revsqrt/benches/rsqrt-bench.rs @@ -1,9 +1,10 @@ -#![allow(unused)] -use criterion::{black_box, criterion_group, criterion_main, BenchmarkId, Criterion, Throughput}; +use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion, Throughput}; use revsqrt::{fast_inverse_sqrt, regular_inverse_sqrt}; + const SIZE: f32 = 1337.1337; const FCONST: f32 = 1024.12481224; const FCONST1: f32 = 4025.724812234; + pub fn single_input(c: &mut Criterion) { c.bench_with_input(BenchmarkId::new("regular rsqrt", SIZE), &SIZE, |b, &s| { b.iter(|| regular_inverse_sqrt(s)) diff --git a/members/revsqrt/src/main.rs b/members/revsqrt/src/main.rs new file mode 100644 index 0000000..a4cee0b --- /dev/null +++ b/members/revsqrt/src/main.rs @@ -0,0 +1,37 @@ +use std::process::exit; + +use revsqrt::*; + +fn main() { + let args: Vec = std::env::args().collect::>(); + if args.len() != 2 { + usage(&args[0]); + exit(1); + } + let n: f32 = match args[1].parse() { + Ok(n) => n, + Err(err) => { + eprintln!("could not parse: {err}\n"); + usage(&args[0]); + exit(1); + } + }; + + let mut start = std::time::Instant::now(); + let rr = regular_inverse_sqrt(n); + let rdur = start.elapsed(); + + start = std::time::Instant::now(); + let fr = fast_inverse_sqrt(n); + let fdur = start.elapsed(); + + println!("regular\tinverse square root of {n}: {rr}\t(took {rdur:?})\n\ + fast \tinverse square root of {n}: {fr}\t(took {fdur:?})\n\n\ + The timings are not accurate. Benchmarks show ~170 ps for each.\n\ + The CPU has a instruction for sqrt, and 1/x is simple division, so\n\ + an algorithm like fast inverse square root can hardly be faster."); +} + +fn usage(invocation: &str) { + println!("usage:\n\n{invocation} NUMBER # (i.e. 1.3)"); +} diff --git a/members/serde-json-demo/.gitignore b/members/serde-json-demo/.gitignore new file mode 100644 index 0000000..ea8c4bf --- /dev/null +++ b/members/serde-json-demo/.gitignore @@ -0,0 +1 @@ +/target diff --git a/members/serde-json-demo/Cargo.lock b/members/serde-json-demo/Cargo.lock new file mode 100644 index 0000000..cf81dc3 --- /dev/null +++ b/members/serde-json-demo/Cargo.lock @@ -0,0 +1,369 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 3 + +[[package]] +name = "android-tzdata" +version = "0.1.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0" + 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+1,41 @@ +use chrono; +use serde::{Deserialize, Serialize}; +use serde_json; + +#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)] +#[serde(rename_all = "UPPERCASE")] +struct Foo { + name: String, + q: Qux, + t: chrono::DateTime, +} + +#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)] +#[serde(rename_all = "UPPERCASE")] +struct Qux { + i: i64, + b: bool, + j: serde_json::Value, +} + +fn main() { + let qj = r#"{ + "some Key": [1, 2, 3], + "deep": { + "m": true + } + }"#; + let foo = Foo { + name: String::from("foo"), + q: Qux { + i: 19, + b: false, + j: serde_json::from_str(qj).unwrap(), + }, + t: chrono::offset::Utc::now(), + }; + let foostr = serde_json::to_string(&foo).unwrap(); + println!("foo:\n\n{}", foostr); + let foo2: Foo = serde_json::from_str(&foostr).unwrap(); + println!("same?: {}", foo == foo2); +} diff --git a/members/slog-demo/.gitignore b/members/slog-demo/.gitignore new file mode 100644 index 0000000..ea8c4bf --- /dev/null +++ b/members/slog-demo/.gitignore @@ -0,0 +1 @@ +/target diff --git a/members/slog-demo/Cargo.lock b/members/slog-demo/Cargo.lock new file mode 100644 index 0000000..d11b47e --- /dev/null +++ b/members/slog-demo/Cargo.lock @@ -0,0 +1,16 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 3 + +[[package]] +name = "slog" +version = "2.7.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "8347046d4ebd943127157b94d63abb990fcf729dc4e9978927fdf4ac3c998d06" + +[[package]] +name = "slog-demo" +version = "0.1.0" +dependencies = [ + "slog", +] diff --git a/members/slog-demo/Cargo.toml b/members/slog-demo/Cargo.toml new file mode 100644 index 0000000..fccb552 --- /dev/null +++ b/members/slog-demo/Cargo.toml @@ -0,0 +1,9 @@ +[package] +name = "slog-demo" +version = "0.1.0" +edition = "2021" + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] +slog = "2.7.0" diff --git a/members/slog-demo/src/main.rs b/members/slog-demo/src/main.rs new file mode 100644 index 0000000..e7a11a9 --- /dev/null +++ b/members/slog-demo/src/main.rs @@ -0,0 +1,3 @@ +fn main() { + println!("Hello, world!"); +}