quaeratin/node/double-expansion/e-diff.js

An extended precision floating point library (as per Shewchuk) - precision only limited by overflow / underflow

import { fastExpansionSum } from "./fast-expansion-sum.js";
import { eNegativeOf } from "./e-negative-of.js";
// We *have* to do the below❗ The assignee is a getter❗ The assigned is a pure function❗
const negativeOf = eNegativeOf;
const add = fastExpansionSum;
/**
 * Returns the difference between two floating point expansions, i.e. e - f.
 *
 * * see [Shewchuk](https://people.eecs.berkeley.edu/~jrs/papers/robustr.pdf)
 *
 * @param e a floating point expansion
 * @param f another floating point expansion
 */
function eDiff(e, f) {
    const g = negativeOf(f);
    return add(e, g);
}
export { eDiff };
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