mathsteps-experimental-fork/dist/es/lib/simplifyExpression/rules/convertDecimalToFraction.js

Step by step math solutions. Experimental Fork

import math from '../../config.js';
import Node from '../../node/index.js';
import { ChangeTypes } from '../../types/changeType/ChangeTypes.js';

// Converts a decimal number to fraction
// e.g. 3.14 -> 314/100
function convertDecimalToFraction(node, simplifyCtx) {
  let rv = null;
  const isNumericalMode = simplifyCtx.expressionCtx
    ? simplifyCtx.expressionCtx.isNumerical()
    : false;
  if (!isNumericalMode
    && Node.Type.isConstant(node)
    && math.isNumeric(node.value)
    && !math.isInteger(node.value)) {
    // Node is non-integer constant e.g. 3.14.
    const fractionValues = node.value.toFraction();
    const numeratorNode = Node.Creator.constant(fractionValues[0]);
    const denominatorNode = Node.Creator.constant(fractionValues[1]);
    const newNode = Node.Creator.operator('/', [numeratorNode, denominatorNode]);
    rv = {
      changeType: ChangeTypes.KEMU_DECIMAL_TO_FRACTION,
      rootNode: newNode,
    };
  }
  return rv
}

export { convertDecimalToFraction as default };