20 lines
620 B
Dart
20 lines
620 B
Dart
import 'dart:math';
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import 'package:flutter/foundation.dart';
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final double _log2 = log(2);
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const double _piOver180 = pi / 180.0;
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double toDegrees(num radians) => radians / _piOver180;
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double toRadians(num degrees) => degrees * _piOver180;
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int highestPowerOf2(num x) => x < 1 ? 0 : pow(2, (log(x) / _log2).floor());
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double roundToPrecision(final double value, {@required final int decimals}) => (value * pow(10, decimals)).round() / pow(10, decimals);
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// e.g. x=12345, precision=3 should return 13000
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int ceilBy(num x, int precision) {
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final factor = pow(10, precision);
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return (x / factor).ceil() * factor;
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}
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