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@stdlib/math-base-special-fresnels

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Compute the Fresnel integral S(x).

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/* * @license Apache-2.0 * * Copyright (c) 2019 The Stdlib Authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ // TypeScript Version: 4.1 /** * Computes the Fresnel integral S(x). * * @param x - input value * @returns S(x) * * @example * var v = fresnels( 0.0 ); * // returns 0.0 * * @example * var v = fresnels( 1.0 ); * // returns ~0.438 * * @example * var v = fresnels( Infinity ); * // returns ~0.5 * * @example * var v = fresnels( -Infinity ); * // returns ~-0.5 * * @example * var v = fresnels( NaN ); * // returns NaN */ declare function fresnels( x: number ): number; // EXPORTS // export = fresnels;