import type { DataXY, DoubleArray } from 'cheminfo-types';
/**
 * Interpolate y values at target x positions using linear interpolation.
 * This is useful for upsampling or resampling data to specific x positions.
 * Both the input data and target x values must be sorted in ascending order.
 * Uses a two-pointer approach with O(n + m) complexity.
 * @param data - Object that contains property x (an ordered increasing array) and y (an array)
 * @param xTarget - Target x positions where y values should be interpolated
 * @returns - Interpolated y values at target x positions
 */
export declare function xyInterpolateLinear(data: DataXY, xTarget: DoubleArray): Float64Array;
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