Skip to content
Draft
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
219 changes: 219 additions & 0 deletions lib/node_modules/@stdlib/math/base/special/ceilnf/README.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,219 @@
<!--

@license Apache-2.0

Copyright (c) 2024 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.

-->

# ceilnf

> Round a single-precision floating-point numeric value to the nearest multiple of 10^n toward positive infinity.

<section class="usage">

## Usage

```javascript
var ceilnf = require( '@stdlib/math/base/special/ceilnf' );
```

#### ceilnf( x, n )

Rounds a single-precision floating-point `numeric` value to the nearest multiple of `10^n` toward positive infinity.

```javascript
// Round a value to 2 decimal places:
var v = ceilnf( 3.141592653589793, -2 );
// returns 3.15

// If n = 0, `ceiln` behaves like `ceil`:
v = ceilnf( 3.141592653589793, 0 );
// returns 4.0

// Round a value to the nearest thousand:
v = ceilnf( 12368.0, 3 );
// returns 13000.0
```

</section>

<!-- /.usage -->

<section class="notes">

## Notes

- When operating on [floating-point numbers][ieee754] in bases other than `2`, rounding to specified digits can be **inexact**. For example,

```javascript
var x = 0.2 + 0.1;
// returns 0.30000000000000004

// Should round to 0.3:
var v = ceilnf( x, -16 );
// returns 0.3000000000000001
```

</section>

<!-- /.notes -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var randu = require( '@stdlib/random/base/randu' );
var ceilnf = require( '@stdlib/math/base/special/ceilnf' );

var x;
var n;
var v;
var i;

for ( i = 0; i < 100; i++ ) {
x = (randu()*100.0) - 50.0;
n = ceilnf( randu()*5.0, 0 );
v = ceilnf( x, -n );
console.log( 'x: %d. Number of decimals: %d. Rounded: %d.', x, n, v );
}
```

</section>

<!-- /.examples -->

<!-- C interface documentation. -->

* * *

<section class="c">

## C APIs

<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->

<section class="intro">

</section>

<!-- /.intro -->

<!-- C usage documentation. -->

<section class="usage">

### Usage

```c
#include "stdlib/math/base/special/ceilnf.h"
```

#### stdlib_base_ceilnf( x, n )

Rounds a single-precision floating-point numeric value to the nearest multiple of 10^n toward positive infinity.

```c
// Round a value to 2 decimal places:
float y = stdlib_base_ceilnf( 3.141592653589793f, -2f );
// returns 3.15f
```

The function accepts the following arguments:

- **x**: `[in] float` input value.
- **n**: `[in] int32_t` integer power of 10.

```c
float stdlib_base_ceilnf( const float x, const int32_t n );
```

</section>

<!-- /.usage -->

<!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

</section>

<!-- /.notes -->

<!-- C API usage examples. -->

<section class="examples">

### Examples

```c
#include "stdlib/math/base/special/ceilnf.h"
#include <stdio.h>

int main( void ) {
const float x[] = { 3.14f, -3.14f, 0.0f, 0.0f/0.0f };

float y;
int i;
for ( i = 0; i < 4; i++ ) {
y = stdlib_base_ceilnf( x[ i ], -2 );
printf( "ceilnf(%f, -2) = %f\n", x[ i ], y );
}
}
```

</section>

<!-- /.examples -->

</section>

<!-- /.c -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

- <span class="package-name">[`@stdlib/math/base/special/ceilf`][@stdlib/math/base/special/ceilf]</span><span class="delimiter">: </span><span class="description">Rounds a single-precision floating-point number toward positive infinity.</span>
- <span class="package-name">[`@stdlib/math/base/special/ceiln`][@stdlib/math/base/special/ceiln]</span><span class="delimiter">: </span><span class="description">Rounds a numeric value to the nearest multiple of 10^n toward positive infinity.</span>

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="links">

[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985

<!-- <related-links> -->

[@stdlib/math/base/special/ceilf]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/math/base/special/ceilf

[@stdlib/math/base/special/ceiln]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/math/base/special/ceiln

<!-- </related-links> -->

</section>

<!-- /.links -->
Original file line number Diff line number Diff line change
@@ -0,0 +1,51 @@
/**
* @license Apache-2.0
*
* Copyright (c) 2024 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 bench = require( '@stdlib/bench' );
var randu = require( '@stdlib/random/base/randu' );
var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
var pkg = require( './../package.json' ).name;
var ceilnf = require( './../lib' );


// MAIN //

bench( pkg, function benchmark( b ) {
var x;
var y;
var i;

b.tic();
for ( i = 0; i < b.iterations; i++ ) {
x = ( randu()*1.0e7 ) - 5.0e6;
y = ceilnf( x, -2 );
if ( isnanf( y ) ) {
b.fail( 'should not return NaN' );
}
}
b.toc();
if ( isnanf( y ) ) {
b.fail( 'should not return NaN' );
}
b.pass( 'benchmark finished' );
b.end();
});
Original file line number Diff line number Diff line change
@@ -0,0 +1,60 @@
/**
* @license Apache-2.0
*
* Copyright (c) 2024 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 resolve = require( 'path' ).resolve;
var bench = require( '@stdlib/bench' );
var randu = require( '@stdlib/random/base/randu' );
var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
var tryRequire = require( '@stdlib/utils/try-require' );
var pkg = require( './../package.json' ).name;


// VARIABLES //

var ceilnf = tryRequire( resolve( __dirname, './../lib/native.js' ) );
var opts = {
'skip': ( ceilnf instanceof Error )
};


// MAIN //

bench( pkg+'::native', opts, function benchmark( b ) {
var x;
var y;
var i;

b.tic();
for ( i = 0; i < b.iterations; i++ ) {
x = ( randu()*1.0e7 ) - 5.0e6;
y = ceilnf( x, -2 );
if ( isnanf( y ) ) {
b.fail( 'should not return NaN' );
}
}
b.toc();
if ( isnanf( y ) ) {
b.fail( 'should not return NaN' );
}
b.pass( 'benchmark finished' );
b.end();
});
Loading
Loading