import { DType, Tensor } from '../../../library';
import { BackwardOp, VariableI } from '../../types';
export declare class GemmBack<DTpe extends DType> implements BackwardOp<DTpe> {
    a: VariableI<DTpe>;
    b: VariableI<DTpe>;
    transA: boolean;
    transB: boolean;
    alpha: number;
    beta: number;
    c?: VariableI<DTpe> | undefined;
    constructor(a: VariableI<DTpe>, b: VariableI<DTpe>, transA: boolean, transB: boolean, alpha: number, beta: number, c?: VariableI<DTpe> | undefined);
    backward(grad: Tensor<DTpe>): void;
    delete(): void;
}