time-to-botec/js/node_modules/@stdlib/math/base/special/sqrt1pm1/README.md

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@license Apache-2.0
Copyright (c) 2018 The Stdlib Authors.
Licensed under the Apache License, Version 2.0 (the "License");
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# sqrt1pm1
> Compute `sqrt( 1 + x ) - 1`.
<section class="usage">
## Usage
```javascript
var sqrt1pm1 = require( '@stdlib/math/base/special/sqrt1pm1' );
```
#### sqrt1pm1( x )
Computes `sqrt( 1 + x ) - 1` more accurately for small `x`.
```javascript
var v = sqrt1pm1( 3.0 );
// returns 1.0
v = sqrt1pm1( 0.5 );
// returns ~0.225
v = sqrt1pm1( 0.02 );
// returns ~0.01
v = sqrt1pm1( -0.5 );
// returns ~-0.293
v = sqrt1pm1( -1.1 );
// returns NaN
v = sqrt1pm1( NaN );
// returns NaN
```
</section>
<!-- /.usage -->
<section class="examples">
## Examples
<!-- eslint no-undef: "error" -->
```javascript
var randu = require( '@stdlib/random/base/randu' );
var round = require( '@stdlib/math/base/special/round' );
var sqrt1pm1 = require( '@stdlib/math/base/special/sqrt1pm1' );
var x;
var i;
for ( i = 0; i < 100; i++ ) {
x = round( randu() * 100.0 );
console.log( 'sqrt(1+%d) - 1 = %d', x, sqrt1pm1( x ) );
}
```
</section>
<!-- /.examples -->
<section class="links">
</section>
<!-- /.links -->