Function makeLeftRightDelim

static/katex/katex.mjs:8567–8587

(delim, height, depth, options, mode, classes)

const makeLeftRightDelim = function makeLeftRightDelim(delim, height, depth, options, mode, classes) {
  // We always center \left/\right delimiters, so the axis is always shifted
  const axisHeight = options.fontMetrics().axisHeight * options.sizeMultiplier; // Taken from TeX source, tex.web, function make_left_right

  const delimiterFactor = 901;
  const delimiterExtend = 5.0 / options.fontMetrics().ptPerEm;
  const maxDistFromAxis = Math.max(height - axisHeight, depth + axisHeight);
  const totalHeight = Math.max( // In real TeX, calculations are done using integral values which are
  // 65536 per pt, or 655360 per em. So, the division here truncates in
  // TeX but doesn't here, producing different results. If we wanted to
  // exactly match TeX's calculation, we could do
  //   Math.floor(655360 * maxDistFromAxis / 500) *
  //    delimiterFactor / 655360
  // (To see the difference, compare
  //    x^{x^{\left(\rule{0.1em}{0.68em}\right)}}
  // in TeX and KaTeX)
  maxDistFromAxis / 500 * delimiterFactor, 2 * maxDistFromAxis - delimiterExtend); // Finally, we defer to `makeCustomSizedDelim` with our calculated total
  // height

  return makeCustomSizedDelim(delim, totalHeight, true, options, mode, classes);
};

var delimiter = {
  sqrtImage: makeSqrtImage,