All files native.js

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/**
* @license Apache-2.0
*
* Copyright (c) 2026 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 isnan = require( '@stdlib/math/base/assert/is-nan' );
var isInteger = require( '@stdlib/math/base/assert/is-integer' );
var isInfinite = require( '@stdlib/math/base/assert/is-infinite' );
var addon = require( './../src/addon.node' );
 
 
// MAIN //
 
/**
* Round a single-precision floating-point number to `n` significant figures in base `b`.
*
* @private
* @param {number} x - input value
* @param {number} n - number of significant figures
* @param {number} b - base (integer >= 2)
* @returns {number} rounded value
*
* @example
* var v = roundsdf( 3.14159, 3, 10 );
* // returns 3.140000104904175
*
* @example
* var v = roundsdf( 3.14159, 1, 10 );
* // returns 3.0
*
* @example
* var v = roundsdf( 12368.0, 2, 10 );
* // returns 11999.9990234375
*
* @example
* var v = roundsdf( 0.0313, 2, 2 );
* // returns 0.03125
*/
function roundsdf( x, n, b ) {
	if ( isnan( x ) || !isInteger( n ) || !isInteger( b ) || n < 1 || b < 2 ) {
		return NaN;
	}
	if ( isInfinite( x ) || x === 0.0 ) {
		return x;
	}
	return addon( x, n, b );
}
 
 
// EXPORTS //
 
module.exports = roundsdf;