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* @license Apache-2.0
*
* Copyright (c) 2025 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.
*/
'use strict';
// MODULES //
var sinf = require( '@stdlib/math/base/special/sinf' );
var f32 = require( '@stdlib/number/float64/base/to-float32' );
// VARIABLES //
var ONE = f32( 1.0 );
var TWO = f32( 2.0 );
// MAIN //
/**
* Computes the half-value coversed cosine of a single-precision floating-point number (in radians).
*
* @param {number} x - input value (in radians)
* @returns {number} half-value coversed cosine
*
* @example
* var v = hacovercosf( 0.0 );
* // returns 0.5
*
* @example
* var v = hacovercosf( 3.141592653589793/2.0 );
* // returns 1.0
*
* @example
* var v = hacovercosf( -3.141592653589793/6.0 );
* // returns 0.25
*
* @example
* var v = hacovercosf( NaN );
* // returns NaN
*/
function hacovercosf( x ) {
return f32( f32( ONE + sinf( x ) ) / TWO );
}
// EXPORTS //
module.exports = hacovercosf;
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