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improve floating point handling

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This commit is contained in:
Jakob Ketterl 2021-02-27 23:21:14 +01:00
parent 0537e23e38
commit 06b6054071
1 changed files with 7 additions and 1 deletions
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8
htdocs/lib/settings/ExponentialInput.js
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@ -14,7 +14,13 @@ $.fn.exponentialInput = function() {
var setExponent = function() { var setExponent = function() {
var newExponent = parseInt($exponent.val()); var newExponent = parseInt($exponent.val());
var delta = currentExponent - newExponent; var delta = currentExponent - newExponent;
$input.val(parseFloat($input.val()) * 10 ** delta); if (delta >= 0) {
$input.val(parseFloat($input.val()) * 10 ** delta);
} else {
// should not be necessary to handle this separately, but floating point precision in javascript
// does not handle this well otherwise
$input.val(parseFloat($input.val()) / 10 ** -delta);
}
currentExponent = newExponent; currentExponent = newExponent;
}; };