Function _rangeNum

src/utils.js:202–267

(_min, _max, cfg)

}

function _rangeNum(_min, _max, cfg) {
	let cmin = cfg.min;
	let cmax = cfg.max;

	let padMin = ifNull(cmin.pad, 0);
	let padMax = ifNull(cmax.pad, 0);

	let hardMin = ifNull(cmin.hard, -inf);
	let hardMax = ifNull(cmax.hard,  inf);

	let softMin = ifNull(cmin.soft,  inf);
	let softMax = ifNull(cmax.soft, -inf);

	let softMinMode = ifNull(cmin.mode, 0);
	let softMaxMode = ifNull(cmax.mode, 0);

	let delta = _max - _min;
	let deltaMag = log10(delta);

	let scalarMax = max(abs(_min), abs(_max));
	let scalarMag = log10(scalarMax);

	let scalarMagDelta = abs(scalarMag - deltaMag);

	// this handles situations like 89.7, 89.69999999999999
	// by assuming 0.001x deltas are precision errors
//	if (delta > 0 && delta < abs(_max) / 1e3)
//		delta = 0;

	// treat data as flat if delta is less than 1e-24
	// or range is 11+ orders of magnitude below raw values, e.g. 99999999.99999996 - 100000000.00000004
	if (delta < 1e-24 || scalarMagDelta > 10) {
		delta = 0;

		// if soft mode is 2 and all vals are flat at 0, avoid the 0.1 * 1e3 fallback
		// this prevents 0,0,0 from ranging to -100,100 when softMin/softMax are -1,1
		if (_min == 0 || _max == 0) {
			delta = 1e-24;

			if (softMinMode == 2 && softMin != inf)
				padMin = 0;

			if (softMaxMode == 2 && softMax != -inf)
				padMax = 0;
		}
	}

	let nonZeroDelta = delta || scalarMax || 1e3;
	let mag          = log10(nonZeroDelta);
	let base         = pow(10, floor(mag));

	let _padMin  = nonZeroDelta * (delta == 0 ? (_min == 0 ? .1 : 1) : padMin);
	let _newMin  = roundDec(incrRoundDn(_min - _padMin, base/10), 24);
	let _softMin = _min >= softMin && (softMinMode == 1 || softMinMode == 3 && _newMin <= softMin || softMinMode == 2 && _newMin >= softMin) ? softMin : inf;
	let minLim   = max(hardMin, _newMin < _softMin && _min >= _softMin ? _softMin : min(_softMin, _newMin));

	let _padMax  = nonZeroDelta * (delta == 0 ? (_max == 0 ? .1 : 1) : padMax);
	let _newMax  = roundDec(incrRoundUp(_max + _padMax, base/10), 24);