# altBn128G1Multiexp

[**api**](https://near-sdk-js.gitbook.io/near-sdk-js/api) • **Docs**

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[near-sdk-js v2.0.0](https://near-sdk-js.gitbook.io/near-sdk-js/packages) / [api](https://near-sdk-js.gitbook.io/near-sdk-js/api) / altBn128G1Multiexp

## Function: altBn128G1Multiexp()

> **altBn128G1Multiexp**(`value`): `Uint8Array`

Computes multiexp on alt\_bn128 curve using Pippenger's algorithm \sum\_i mul\_i g\_{1 i} should be equal result.

### Parameters

• **value**: `Uint8Array`

sequence of (g1:G1, fr:Fr), where G1 is point (x:Fq, y:Fq) on alt\_bn128, alt\_bn128 is Y^2 = X^3 + 3 curve over Fq. `value` is encoded as packed, little-endian `[((u256, u256), u256)]` slice.

### Returns

`Uint8Array`

multi exp sum

### Defined in

[packages/near-sdk-js/src/api.ts:978](https://github.com/near/near-sdk-js/blob/b58ac04fc6dff2f1120e9098c0cb059493486598/packages/near-sdk-js/src/api.ts#L978)