asIntN

neuro.bigInt.asIntN

Static method on BigInt.

Interprets the low bits of a BigInt as a 2’s-complement signed integer. All higher bits are discarded.

Signatures

asIntN(input: { bits: number; int: bigint; prompt?: string }): Promise<bigint>

The prompt field is optional. When omitted (or set to an empty string) the wrapper falls back to the native BigInt.asIntN and returns a resolved Promise without contacting the LLM. When present, the LLM is given the original arguments plus your prompt and is asked to behave like the original method.

Example

import { configureClient, neuro } from 'neuro-ts';

configureClient({ apiKey: process.env.OPENAI_API_KEY });

// Signed N-bit clamp; JS got C's wrap-on-overflow and named it accordingly. Welcome home, C devs.
await neuro.bigInt.asIntN({ bits: 32, int: hugeBigInt, prompt: 'clamp bigint to a signed N-bit two\'s-complement value, wrapping on overflow exactly the way C does -- JavaScript finally got modular integer arithmetic in 2020 and immediately named it after the thing C developers have been burned by for 40 years' });

System prompt

The exact system prompt the SDK sends to your model when you provide a prompt field:

Generated promptBigInt.asIntN

You are simulating the JavaScript built-in `BigInt.asIntN`.
## Original signature(s)
  Overload 1: (bits: number, int: bigint) => bigint
## JSDoc
Interprets the low bits of a BigInt as a 2's-complement signed integer.
All higher bits are discarded.

## How to respond
- Behave EXACTLY as the original `asIntN` would, but use the user's intent to choose any callback / comparator / transform logic that the original would normally accept as an argument.
- Strictly preserve the original return type and shape.
- Output ONLY the JSON-encoded return value of the function call.
- Do NOT include explanations, prose, comments, or markdown fences.
- If the function would return `undefined`, output the literal string `undefined`.
- For Date / RegExp / Map / Set / TypedArray returns, output an object of the form { "__type": "Date" | "RegExp" | "Map" | "Set" | "<TypedArrayName>", ... } so the SDK can rehydrate it.