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feat: add math/base/assert/is-nonnegative-integerf #2851

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Original file line number Diff line number Diff line change
@@ -0,0 +1,224 @@
<!--

@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.

-->

# isNonNegativeIntegerf

> Test if a finite [single-precision floating-point number][ieee754] is a nonnegative integer.

<section class="usage">

## Usage

```javascript
var isNonNegativeIntegerf = require( '@stdlib/math/base/assert/is-nonnegative-integerf' );
```

#### isNonNegativeIntegerf( x )

Tests if a finite [single-precision floating-point number][ieee754] is a nonnegative `integer`.

```javascript
var bool = isNonNegativeIntegerf( 1.0 );
// returns true

bool = isNonNegativeIntegerf( 0.0 );
// returns true

bool = isNonNegativeIntegerf( -10.0 );
// returns false
```

</section>

<!-- /.usage -->

<section class="notes">

## Notes

- The function assumes a **finite** `number`. If provided positive `infinity`, the function will return `true`, when, in fact, the result is undefined. If `x` can be `infinite`, wrap the implementation as follows:

```javascript
function check( x ) {
return (
x < Infinity &&
isNonNegativeIntegerf( x )
);
}

var bool = check( Infinity );
// returns false
```

- The function does **not** distinguish between positive and negative `zero`.

```javascript
var bool = isNonNegativeIntegerf( 0.0 );
// returns true

bool = isNonNegativeIntegerf( -0.0 );
// returns true
```

</section>

<!-- /.notes -->

<section class="examples">

## Examples

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

```javascript
var isNonNegativeIntegerf = require( '@stdlib/math/base/assert/is-nonnegative-integerf' );

var bool = isNonNegativeIntegerf( 5.0 );
// returns true

bool = isNonNegativeIntegerf( 0.0 );
// returns true

bool = isNonNegativeIntegerf( -1.0 );
// returns false

bool = isNonNegativeIntegerf( 3.14 );
// returns false

bool = isNonNegativeIntegerf( NaN );
// returns false
```

</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/assert/is_nonnegative_integerf.h"
```

#### stdlib_base_is_nonnegative_integerf( x )

Tests if a finite [single-precision floating-point number][ieee754] is a nonnegative integer.

```c
bool out = stdlib_base_is_nonnegative_integerf( 1.0f );
// returns true

out = stdlib_base_is_nonnegative_integerf( -10.0f );
// returns false
```

The function accepts the following arguments:

- **x**: `[in] float` input value.

```c
bool stdlib_base_is_nonnegative_integerf( const float x );
```

</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/assert/is_nonnegative_integerf.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

int main( void ) {
float x;
bool v;
int i;

for ( i = 0; i < 100; i++ ) {
x = ( ( (float)rand() / (float)RAND_MAX ) * 100.0f ) - 50.0f;
v = stdlib_base_is_nonnegative_integerf( x );
printf( "x = %f, is_nonnegative_integerf(x) = %s\n", x, ( v ) ? "true" : "false" );
}
}
```

</section>

<!-- /.examples -->

</section>

<!-- /.c -->

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

<section class="related">

</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> -->

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

</section>

<!-- /.links -->
Original file line number Diff line number Diff line change
@@ -0,0 +1,52 @@
/**
* @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/array/discrete-uniform' );
var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
var pkg = require( './../package.json' ).name;
var isNonNegativeIntegerf = require( './../lib' );


// MAIN //

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

x = randu( 100, -5.0e6, 5.0e6 );

b.tic();
for ( i = 0; i < b.iterations; i++ ) {
y = isNonNegativeIntegerf( x[ i % x.length ] );
if ( typeof y !== 'boolean' ) {
b.fail( 'should return a boolean' );
}
}
b.toc();
if ( !isBoolean( y ) ) {
b.fail( 'should return a boolean' );
}
b.pass( 'benchmark finished' );
b.end();
});
Original file line number Diff line number Diff line change
@@ -0,0 +1,61 @@
/**
* @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/array/discrete-uniform' );
var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
var tryRequire = require( '@stdlib/utils/try-require' );
var pkg = require( './../package.json' ).name;


// VARIABLES //

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


// MAIN //

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

x = randu( 100, -5.0e6, 5.0e6 );

b.tic();
for ( i = 0; i < b.iterations; i++ ) {
y = isNonNegativeIntegerf( x[ i % x.length ] );
if ( typeof y !== 'boolean' ) {
b.fail( 'should return a boolean' );
}
}
b.toc();
if ( !isBoolean( y ) ) {
b.fail( 'should return a boolean' );
}
b.pass( 'benchmark finished' );
b.end();
});
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