224 lines
3.8 KiB
Markdown
224 lines
3.8 KiB
Markdown
|
<!--
|
||
|
|
||
|
@license Apache-2.0
|
||
|
|
||
|
Copyright (c) 2020 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.
|
||
|
|
||
|
-->
|
||
|
|
||
|
# Float word Order
|
||
|
|
||
|
> Platform [float word order][endianness].
|
||
|
|
||
|
<section class="usage">
|
||
|
|
||
|
## Usage
|
||
|
|
||
|
```javascript
|
||
|
var FLOAT_WORD_ORDER = require( '@stdlib/os/float-word-order' );
|
||
|
```
|
||
|
|
||
|
#### FLOAT_WORD_ORDER
|
||
|
|
||
|
Platform float word order.
|
||
|
|
||
|
```javascript
|
||
|
console.log( FLOAT_WORD_ORDER );
|
||
|
// => <string>
|
||
|
```
|
||
|
|
||
|
</section>
|
||
|
|
||
|
<!-- /.usage -->
|
||
|
|
||
|
<section class="notes">
|
||
|
|
||
|
## Notes
|
||
|
|
||
|
- The following values are possible:
|
||
|
|
||
|
- `'little-endian'`
|
||
|
- `'big-endian'`
|
||
|
- `'unknown'`
|
||
|
|
||
|
</section>
|
||
|
|
||
|
<!-- /.notes -->
|
||
|
|
||
|
<section class="examples">
|
||
|
|
||
|
## Examples
|
||
|
|
||
|
<!-- eslint no-undef: "error" -->
|
||
|
|
||
|
```javascript
|
||
|
var FLOAT_WORD_ORDER = require( '@stdlib/os/float-word-order' );
|
||
|
|
||
|
if ( FLOAT_WORD_ORDER === 'little-endian' ) {
|
||
|
console.log( 'Least significant word comes first...' );
|
||
|
} else if ( FLOAT_WORD_ORDER === 'big-endian' ) {
|
||
|
console.log( 'Most significant word comes first...' );
|
||
|
} else {
|
||
|
console.log( 'This is uncommon...' );
|
||
|
}
|
||
|
```
|
||
|
|
||
|
</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/os/float_word_order.h"
|
||
|
```
|
||
|
|
||
|
#### STDLIB_OS_FLOAT_WORD_ORDER
|
||
|
|
||
|
Macro which equals either `__FLOAT_WORD_ORDER__` (host defined) or [`STDLIB_OS_BYTE_ORDER`][@stdlib/os/byte-order].
|
||
|
|
||
|
```c
|
||
|
#include "stdlib/os/byte_order.h"
|
||
|
|
||
|
#if defined(STDLIB_OS_FLOAT_WORD_ORDER)
|
||
|
|
||
|
#if STDLIB_OS_FLOAT_WORD_ORDER == STDLIB_OS_ORDER_LITTLE_ENDIAN
|
||
|
|
||
|
// Do something for little-endian...
|
||
|
|
||
|
#elif STDLIB_OS_FLOAT_WORD_ORDER == STDLIB_OS_ORDER_BIG_ENDIAN
|
||
|
|
||
|
// Do something for big-endian...
|
||
|
|
||
|
#endif
|
||
|
|
||
|
#endif
|
||
|
```
|
||
|
|
||
|
If compiled on an unrecognized/unsupported platform, the macro is **not** defined.
|
||
|
|
||
|
</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/os/float_word_order.h"
|
||
|
#include "stdlib/os/byte_order.h"
|
||
|
#include <stdio.h>
|
||
|
|
||
|
int main() {
|
||
|
#if defined(STDLIB_OS_FLOAT_WORD_ORDER)
|
||
|
#if STDLIB_OS_FLOAT_WORD_ORDER == STDLIB_OS_ORDER_LITTLE_ENDIAN
|
||
|
printf( "Least significant word comes first...\n" );
|
||
|
#elif STDLIB_OS_FLOAT_WORD_ORDER == STDLIB_OS_ORDER_BIG_ENDIAN
|
||
|
printf( "Most significant word comes first...\n" );
|
||
|
#else
|
||
|
printf( "Platform float word order is unknown...\n" )
|
||
|
#endif
|
||
|
#endif
|
||
|
}
|
||
|
```
|
||
|
|
||
|
</section>
|
||
|
|
||
|
<!-- /.examples -->
|
||
|
|
||
|
</section>
|
||
|
|
||
|
<!-- /.c -->
|
||
|
|
||
|
* * *
|
||
|
|
||
|
<section class="cli">
|
||
|
|
||
|
## CLI
|
||
|
|
||
|
<section class="usage">
|
||
|
|
||
|
### Usage
|
||
|
|
||
|
```text
|
||
|
Usage: float-word-order [options]
|
||
|
|
||
|
Options:
|
||
|
|
||
|
-h, --help Print this message.
|
||
|
-V, --version Print the package version.
|
||
|
```
|
||
|
|
||
|
</section>
|
||
|
|
||
|
<!-- /.usage -->
|
||
|
|
||
|
<section class="examples">
|
||
|
|
||
|
### Examples
|
||
|
|
||
|
```bash
|
||
|
$ float-word-order
|
||
|
```
|
||
|
|
||
|
</section>
|
||
|
|
||
|
<!-- /.examples -->
|
||
|
|
||
|
</section>
|
||
|
|
||
|
<!-- /.cli -->
|
||
|
|
||
|
<section class="links">
|
||
|
|
||
|
[endianness]: https://en.wikipedia.org/wiki/Endianness
|
||
|
|
||
|
[@stdlib/os/byte-order]: https://www.npmjs.com/package/@stdlib/os/tree/main/byte-order
|
||
|
|
||
|
</section>
|
||
|
|
||
|
<!-- /.links -->
|