Ole-Morten Duesund
e8428de775
Vite + TypeScript PWA that mirrors the Android app's core features: - Pre-processed shelter data (build-time UTM33N→WGS84 conversion) - Leaflet map with shelter markers, user location, and offline tiles - Canvas compass arrow (ported from DirectionArrowView.kt) - IndexedDB shelter cache with 7-day staleness check - Service worker with CacheFirst tiles and precached app shell - i18n for en, nb, nn (ported from Android strings.xml) - iOS/Android compass handling with low-pass filter - Respects user map interaction (no auto-snap on pan/zoom) - Build revision cache-breaker for reliable SW updates Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
33 lines
845 B
JavaScript
33 lines
845 B
JavaScript
'use strict';
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var MAX_ITER = 1075; // 1023+52 (subnormals) => BIAS+NUM_SIGNFICAND_BITS-1
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var maxBits = 54; // only 53 bits for fraction
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module.exports = function fractionToBitString(x) {
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var str = '';
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if (x === 0) {
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return str;
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}
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var j = MAX_ITER;
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var y;
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// Each time we multiply by 2 and find a ones digit, add a '1'; otherwise, add a '0'..
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for (var i = 0; i < MAX_ITER; i += 1) {
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y = x * 2;
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if (y >= 1) {
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x = y - 1; // eslint-disable-line no-param-reassign
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str += '1';
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if (j === MAX_ITER) {
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j = i; // first 1
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}
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} else {
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x = y; // eslint-disable-line no-param-reassign
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str += '0';
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}
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// Stop when we have no more decimals to process or in the event we found a fraction which cannot be represented in a finite number of bits...
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if (y === 1 || i - j > maxBits) {
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return str;
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}
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}
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return str;
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};
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