Hiroaki Nakamura hnakamur

hnakamur / mpfr_log2.c

Last active January 4, 2023 12:51

Calculate log2(1<<49 - 1) in a higher precision than double.

hnakamur / index.html

Created August 1, 2022 05:57

show JavaScirpt alert from window.onerror

	<script>
	window.onerror = () => alert("Hello, World!");

	function hello(x) {
	if(typeof x === 'undefined') {
	alert(x.f());
	}
	}
	hello();
	</script>

hnakamur / bigint.zig

Last active July 18, 2022 18:26

An idea of redesign Zig's std.math.big.int

	const std = @import("std");
	const testing = std.testing;

	pub const Limb = u64;

	pub const Metadata = packed struct {
	// positive is set as true for n >= 0, false for n < 0.
	positive: bool,
	len: u63,
	};

hnakamur / dynamic_error_msg.zig

Created July 17, 2022 19:25

An example of returning a dynamic error message in Zig

	const std = @import("std");

	const Context = struct {
	canceled: bool = false,
	err: [4096]u8 = undefined,

	pub fn formatErr(self: *Context, comptime fmt: []const u8, args: anytype) error{NoSpaceLeft}!void {
	var fbs = std.io.fixedBufferStream(self.err[0..]);
	var writer = fbs.writer();
	try std.fmt.format(writer, fmt, args);

hnakamur / create_union_enum.zig

Created July 14, 2022 05:17

debug failed attempt of creating union enum in Zig

	const std = @import("std");
	const expect = std.testing.expect;

	const cell = struct {
	v1: ?*Variant,
	v2: ?*Variant,
	};

	const Variant = union(enum) {
	int: i32,

hnakamur / create_union_enum.zig

Last active July 14, 2022 05:03

Crate a binary tree

	const std = @import("std");
	const expect = std.testing.expect;

	const cell = struct {
	v1: ?*Variant,
	v2: ?*Variant,
	};

	const Variant = union(enum) {
	int: i32,

hnakamur / create_union_enum.zig

Created July 14, 2022 03:37

create union enum in Zig

	const std = @import("std");
	const expect = std.testing.expect;

	const Variant = union(enum) {
	int: i32,
	boolean: bool,

	// void can be omitted when inferring enum tag type.
	none,

hnakamur / build.log

Created July 10, 2022 06:23

Non-comptime switch cases not allowed

	$ zig test src/main.zig
	./src/main.zig:11:28: error: cannot store runtime value in compile time variable
	const d: u32 = c;
	^

hnakamur / mytask.yaml

Created May 15, 2022 06:28

trim spaces in ansible vairable using jinja2 if

	---
	- name: My playbook
	hosts: localhost
	vars:
	zabbix_agentd_d_dir: >-
	{% if ansible_facts['os_family'] == 'RedHat' -%}
	/etc/zabbix/zabbix_agentd.d
	{%- else -%}
	/etc/zabbix/zabbix_agentd.conf.d
	{%- endif %}

hnakamur / a.js

Created May 3, 2022 01:48

	atob(`DES9N7bxsOmHupY4JsjDg6fZ7vaFIZaWDBASiCj6vN+S
	VYuCa9Bo5LdJHmeo+kpmK2PTvlShVkxpOwt59hGX6sdlT
	apaRgEGCB8FZt3iSkE9EdmShv5vmSv3oMrCoSFlqnLeGY
	9Wh6hNCNx4nUfxtzjoExo494fUr+hZebjFTo5ow//oy22
	fW8fuwieImoEm7y28eFSmN5ITVpjzDabYQBjYPgRpLStG
	jRMcsilxGH6Ud3nweSyqjimsCs6f2OL4JuoIfPTSVAP9/
	hiab9VKmyBM3WbOVwAi+wLjoS6k1FcAcyjQo8HUM3v
	GALSnPn7w+wnD5YNKRdXPVpQ8tq+stidQzFdESSzajS7
	rPC81pzrIjW3tXOkrDmusp/mEzfTEHOsFRq9eq3kOJr+
	CXXSOhjXuSSPVNH1rt8JIDUts529LqAb5pPfYta1L4bD