feat: add C implementation and refactor of blas/base/srotg

lib/node_modules/@stdlib/blas/base/srotg/README.md

@@ -92,6 +92,137 @@ for ( i = 0; i < 100; i++ ) {
 
 <!-- /.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/blas/base/srotg.h"
+```
+
+#### c_srotg( a, b, \*Out, strideOut )
+
+Constructs a Givens plane rotation provided two single-precision floating-point values `a` and `b`.
+
+```c
+float Out[4];
+c_srotg( 0.0, 2.0, Out, 1 );
+// Out => <Float32Array>[ 2.0, 1.0, 0.0, 1.0 ]
+```
+
+The function accepts the following arguments:
+
+-   **a**: `[in] float` rotational elimination parameter.
+-   **b**: `[in] float` rotational elimination parameter.
+-   **Out**: `[inout] float*` output array.
+-   **strideOut**: `[in] CBLAS_INT` stride length for `Out`.
+
+```c
+void c_srotg_assign( float a, float b, float* Out, const CBLAS_INT strideOut, const CBLAS_INT offsetOut );
+```
+
+#### c_srotg_assign(a, b, \*Out, strideOut, offsetOut )
+
+Constructs a Givens plane rotation provided two single-precision floating-point values `a` and `b` and assigns results to an output array.
+
+```c
+float Out[4];
+c_srotg_assign( 0.0, 2.0, Out, 1, 0 );
+// Out => <Float32Array>[ 2.0, 1.0, 0.0, 1.0 ]
+```
+
+The function accepts the following arguments:
+
+-   **a**: `[in] float` rotational elimination parameter.
+-   **b**: `[in] float` rotational elimination parameter.
+-   **Out**: `[inout] float*` output array.
+-   **strideOut**: `[in] CBLAS_INT` stride length for `Out`.
+-   **offsetOut**: `[in] CBLAS_INT` starting index for `Out`.
+
+Givens transformation.
+
+```c
+void c_srotg_assign( float a, float b, float* Out, const CBLAS_INT strideOut, const CBLAS_INT offsetOut );
+```
+
+</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/blas/base/srotg.h"
+#include <stdio.h>
+
+int main( void ) {
+    // Specify rotational elimination parameter:
+    const float a = 0.0;
+    const float b = 2.0;
+    int i;
+
+    // Create strided arrays:
+    float Out[4];
+
+    // Specify stride lengths:
+    const int strideOut = 1;
+
+    // Apply plane rotation:
+    c_srotg( a, b, Out, strideOut );
+
+    // Print the result:
+    for ( i = 0; i < 4; i++ ) {
+        printf( "Out[%d] =  %f\n", i, Out[i] );
+    }
+
+    // Apply plane rotation
+    c_srotg_assign( a, b, Out, strideOut, 0 );
+
+    // Print the result:
+    for ( i = 0; i < 4; i++ ) {
+        printf( "Out[%d] =  %f\n", i, Out[i] );
+    }
+}
+```
+
+</section>
+
+<!-- /.examples -->
+
+</section>
+
+<!-- /.c -->
+
 <!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
 
 <section class="related">

lib/node_modules/@stdlib/blas/base/srotg/benchmark/benchmark.assign.native.js

@@ -0,0 +1,71 @@
+/**
+* @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 resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var uniform = require( '@stdlib/random/array/uniform' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var srotg = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+	'skip': ( srotg instanceof Error )
+};
+
+
+// VARIABLES //
+
+var OPTS = {
+	'dtype': 'float32'
+};
+
+
+// MAIN //
+
+bench( pkg, opts, function benchmark( b ) {
+	var out;
+	var x;
+	var y;
+	var i;
+
+	x = uniform( 100, -5, 5, OPTS );
+	y = uniform( 100, -5, 5, OPTS );
+	out = uniform( 4, 0, 0, OPTS );
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		srotg( x[ i%x.length ], y[ i%y.length ], out, 1, 0 );
+		if ( typeof out !=='object' ) {
+			b.fail( 'should return an array' );
+		}
+	}
+	b.toc();
+	if ( isnanf( out[ i%4 ] ) ) {
+		b.fail( 'should return the output array' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});

lib/node_modules/@stdlib/blas/base/srotg/benchmark/benchmark.js

@@ -21,9 +21,8 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
-var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var uniform = require( '@stdlib/random/array/uniform' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
-var Float32Array = require( '@stdlib/array/float32' );
 var pkg = require( './../package.json' ).name;
 var srotg = require( './../lib' );
 
@@ -43,8 +42,8 @@ bench( pkg, function benchmark( b ) {
 	var y;
 	var i;
 
-	x = discreteUniform( 100, -5, 5, OPTS );
-	y = discreteUniform( 100, -5, 5, OPTS );
+	x = uniform( 100, -5, 5, OPTS );
+	y = uniform( 100, -5, 5, OPTS );
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
@@ -68,9 +67,9 @@ bench( pkg+':assign', function benchmark( b ) {
 	var z;
 	var i;
 
-	x = discreteUniform( 100, -5, 5, OPTS );
-	y = discreteUniform( 100, -5, 5, OPTS );
-	out = new Float32Array( 4 );
+	x = uniform( 100, -5, 5, OPTS );
+	y = uniform( 100, -5, 5, OPTS );
+	out = uniform( 4, 0, 0, OPTS );
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {

lib/node_modules/@stdlib/blas/base/srotg/benchmark/benchmark.native.js

@@ -0,0 +1,71 @@
+/**
+* @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 resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var uniform = require( '@stdlib/random/array/uniform' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var srotg = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+	'skip': ( srotg instanceof Error )
+};
+
+
+// VARIABLES //
+
+var OPTS = {
+	'dtype': 'float32'
+};
+
+
+// MAIN //
+
+bench( pkg, opts, function benchmark( b ) {
+	var out;
+	var x;
+	var y;
+	var i;
+
+	x = uniform( 100, -5, 5, OPTS );
+	y = uniform( 100, -5, 5, OPTS );
+	out = uniform( 4, 0, 0, OPTS );
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		srotg( x[ i%x.length ], y[ i%y.length ], out, 1 );
+		if ( typeof out !=='object' ) {
+			b.fail( 'should return an array' );
+		}
+	}
+	b.toc();
+	if ( isnanf( out[ i%4 ] ) ) {
+		b.fail( 'should return the output array' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});