Skip to content

Instantly share code, notes, and snippets.

export MARKPATH=$HOME/.marks
function jump {
cd -P $MARKPATH/$1 2>/dev/null || echo "No such mark: $1"
}
function mark {
mkdir -p $MARKPATH; ln -s $(pwd) $MARKPATH/$1
}
function unmark {
rm "$MARKPATH/$1"
}
@xorgy
xorgy / spherical.scm
Last active December 21, 2015 18:18
Util for converting between Cartesian coordinates and spherical coordinates(with the physics symbolic convention).
(define (xyz->ρ x y z)
(sqrt (+
(expt x 2)
(expt y 2)
(expt z 2))))
(define (zρ->θ z ρ)
(acos (/ z ρ)))
(define (yx->φ y x)
@xorgy
xorgy / pts.svg
Last active September 16, 2015 12:02
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
function xyz_to_ρ (x, y, z) {
return Math.sqrt((x * x) + (y * y) + (z * z));
}
function zρ_to_θ (z, ρ) {
return Math.acos(z / ρ);
}
function yx_to_φ (y, x) {
return Math.atan(y / x);
@xorgy
xorgy / comeonman.js
Last active January 13, 2017 01:35 — forked from CatTail/htmlentity.js
Javascript: encode(decode) html text into html entity
// encode(decode) html text into html entity
function decodeHtmlEntity(str) {
return str.replace(/&#(\d+);/g, function(match, dec) {
return String.fromCharCode(dec);
});
};
function encodeHtmlEntity(str) {
var buf = '';
for (var i = 0; i < str.length; i++) {
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#define BUFSIZE (1023 * 1024 * 4)
#define HISTSIZE (0x7f - ' ')
typedef struct hist_entry_s {
uint64_t count;
char codepoint;
// Copyright 2018 Aaron Muir Hamilton
//
// Permission to use, copy, modify, and/or distribute this software for
// any purpose with or without fee is hereby granted, provided that the
// above copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
// WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
// AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
void TurboAssembler::li_smallest(Register rd, int64_t j) {
BlockTrampolinePoolScope block_trampoline_pool(this);
unsigned trailing = CountTrailingZeros(j);
unsigned leading = CountLeadingZeros(j);
unsigned solid = 64 - trailing - leading;
if (solid <= 12) {
if (leading >= 44) {
emit(ORI, rd, zero_reg, j);
} else if (leading >= 32 && trailing >= 12) {
emit(LUI, rd, j >> 44);