Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

feat: add implementation of stdlib/math/base/special/minmaxabsf #6290

Open
wants to merge 14 commits into
base: develop
Choose a base branch
from
Open
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
258 changes: 258 additions & 0 deletions lib/node_modules/@stdlib/math/base/special/minmaxabsf/README.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,258 @@
<!--
@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.
-->

# minmaxabsf

> Return the minimum and maximum absolute single-precision floating-point numbers.
<!-- 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 -->

<!-- Package usage documentation. -->

<section class="usage">

## Usage

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

#### minmaxabsf( x,y )

Returns the minimum and maximum absolute single-precision floating-point values in a single pass.

```javascript
var v = minmaxabsf( 4.0, 3.0 );
// returns <Float32Array>[ 3.0, 4.0 ]

v = minmaxabsf( +0.0, -0.0 );
// returns <Float32Array>[ 0.0, 0.0 ]
```

If any argument is `NaN`, the function returns `Nan` for both the minimum value and the maximum value.

```javascript
var v = minmaxabsf( 4.2, NaN );
// returns <Float32Array>[ NaN, NaN ]

v = minmaxabsf( NaN, 3.14 );
// returns <Float32Array>[ NaN, NaN ]
```

#### minmaxabsf.assign( x, y, out, stride, offset )

Returns the minimum and maximum absolute single-precision values in a single pass and assigns the results to a provided output array.

```javascript
var Float32Array = require( '@stdlib/array/float32' );

var out = new Float32Array( 2 );

var v = minmaxabsf.assign( 5.0, -1.0, out, 1, 0 );
// returns <Float32Array>[ 1.0, 5.0 ]

var bool = ( v === out );
// returns true
```

</section>

<!-- /.usage -->

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

<section class="notes">

</section>

<!-- /.notes -->

<!-- Package usage examples. -->

<section class="examples">

## Examples

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

```javascript
var randu = require( '@stdlib/random/base/randu' );
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

We can refactor this example to use random/array/uniform and console/log-each-map.

var minmaxabsf = require( '@stdlib/math/base/special/minmaxabsf' );

var x;
var y;
var v;
var i;

for ( i = 0; i < 100; i++ ) {
x = ( randu()*100.0 ) - 50.0;
y = ( randu()*100.0 ) - 50.0;
v = minmaxabsf( x, y );
console.log( 'minmaxabsf(%d,%d) = [%d, %d]', x, y, v[0], v[1] );
}
```

</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/minmaxabsf.h"
```

#### stdlib_base_minmaxabsf( x, y, min, max )

Returns the minimum and maximum absolute single-precision floating-point values in a single pass.

```c
float min;
float max;
stdlib_base_minmaxabsf( -4.2f, 3.14f, &min, &max );
// [ 3.14, 4.2 ]
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

These return annotations need to be fixed.


stdlib_base_minmaxabsf( 0.0f, -0.0f, &min, &max );
// [ 0.0, 0.0 ]
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

This needs to be fixed.

```
The function accepts the following arguments:
- **x**: `[in] float` input value.
- **y**: `[in] float` input value.
- **min**: `[in] *float` output min.
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
- **min**: `[in] *float` output min.
- **min**: `[out] *float` output min.

- **max**: `[in] *float` output max.
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
- **max**: `[in] *float` output max.
- **max**: `[out] *float` output max.

```c
void stdlib_base_minmaxabsf( const float x, const float y, float* min, float* max );
```

</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/minmaxabsf.h"
#include <stdlib.h>
#include <stdio.h>

int main(void) {
srand(time(NULL)); // Seed random number generator

float x1[10], x2[10];
float min, max;
int i;

// Generate random floating-point values between -1.0 and 1.0
for (i = 0; i < 10; i++) {
x1[i] = ((float)rand() / RAND_MAX) * 2.0f - 1.0f; // Random float in [-1,1]
x2[i] = ((float)rand() / RAND_MAX) * 2.0f - 1.0f; // Random float in [-1,1]

// Introduce NaN values randomly
if (rand() % 10 == 0) x1[i] = NAN;
if (rand() % 10 == 0) x2[i] = NAN;
}

// Compute min and max values
for (i = 0; i < 10; i++) {
stdlib_base_minmaxabsf(x1[i], x2[i], &min, &max);
printf("x1[%d]: %f, x2[%d]: %f, minmaxf(x1[%d], x2[%d]): (%f, %f)\n",
i, x1[i], i, x2[i], i, i, min, max);
}

return 0;
}
```
</section>
<!-- /.examples -->
</section>
<!-- /.c -->
<!-- Section to include cited references. If references are included, add a horizontal rule *before* the section. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
<section class="references">
</section>
<!-- /.references -->
<!-- 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">
<!-- <related-links> -->
<!-- </related-links> -->
</section>
<!-- /.links -->
Original file line number Diff line number Diff line change
@@ -0,0 +1,78 @@
/**
* @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 bench = require( '@stdlib/bench' );
var randu = require( '@stdlib/random/base/randn' );
var isFloat32Array = require( '@stdlib/assert/is-float32array' );
var float32Array = require( '@stdlib/array/float32' );
var pkg = require( './../package.json' ).name;
var minmaxabsf = require( './../lib' );


// MAIN //

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

b.tic();
for ( i = 0; i < b.iterations; i++ ) {
x = ( randu()*1000.0 ) - 500.0;
y = ( randu()*1000.0 ) - 500.0;
z = minmaxabsf( x, y );
if ( z.length !== 2 ) {
b.fail( 'should have expected length' );
}
}
b.toc();
if ( !isFloat32Array( z ) ) {
b.fail( 'should return an array' );
}
b.pass( 'benchmark finished' );
b.end();
});

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

z = new float32Array( 2 );
b.tic();
for ( i = 0; i < b.iterations; i++ ) {
x = ( randu()*1000.0 ) - 500.0;
y = ( randu()*1000.0 ) - 500.0;
z = minmaxabsf.assign( x, y, z, 1, 0 );
if ( z.length !== 2 ) {
b.fail( 'should have expected length' );
}
}
b.toc();
if ( !isFloat32Array( z ) ) {
b.fail( 'should return an array' );
}
b.pass( 'benchmark finished' );
b.end();
});
Loading