feat: add math/base/special/gammasgnf

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---

Author: vivekmaurya001

lib/node_modules/@stdlib/math/base/special/gammasgnf/README.md

@@ -39,7 +39,7 @@ The sign of the [gamma-function][@stdlib/math/base/special/gamma] is defined as
 
 <!-- </equation> -->
 
-The [gamma function][@stdlib/math/base/special/gamma] can be computed as the product of `gammasgnf(x)` and `exp(gammaln(x))`.
+The [gamma function][@stdlib/math/base/special/gamma] can be computed as the product of `gammasgn(x)` and `exp(gammaln(x))`.
 
 </section>
 
@@ -79,7 +79,7 @@ v = gammasgnf( NaN );
 
 ## Notes
 
--   The [gamma function][@stdlib/math/base/special/gamma] is not defined for negative integer values (i.e., `gamma(x) === NaN` when `x` is a negative integer). The [natural logarithm of the gamma function][@stdlib/math/base/special/gammaln] is defined for negative integer values (i.e., `gammaln(x) === Infinity` when `x` is a negative integer). Accordingly, in order for the equality `gamma(x) === gammasgnf(x) * exp(gammaln(x))` to hold (i.e., return `NaN`), `gammasgnf` needs to either return `NaN` or `0`. By convention, this function returns `0`.
+-   The [gamma function][@stdlib/math/base/special/gamma] is not defined for negative integer values (i.e., `gamma(x) === NaN` when `x` is a negative integer). The [natural logarithm of the gamma function][@stdlib/math/base/special/gammaln] is defined for negative integer values (i.e., `gammaln(x) === Infinity` when `x` is a negative integer). Accordingly, in order for the equality `gamma(x) === gammasgn(x) * exp(gammaln(x))` to hold (i.e., return `NaN`), `gammasgn` needs to either return `NaN` or `0`. By convention, this function returns `0`.
 
 </section>
 
@@ -95,7 +95,9 @@ v = gammasgnf( NaN );
 var linspace = require( '@stdlib/array/base/linspace' );
 var gammasgnf = require( '@stdlib/math/base/special/gammasgnf' );
 
-var x = linspace( -10.0, 10.0, 100 );
+var x = linspace( -10.0, 10.0, 100, {
+    'dtype': 'float32'
+});
 
 var i;
 for ( i = 0; i < x.length; i++ ) {
@@ -139,10 +141,10 @@ Returns the sign of the [gamma-function][@stdlib/math/base/special/gamma].
 
 ```c
 float out = stdlib_base_gammasgnf( 1.0 );
-// returns 1.0
+// returns 1.0f
 
 out = stdlib_base_gammasgnf( -2.5 );
-// returns -1.0
+// returns -1.0f
 ```
 
 The function accepts the following arguments:

lib/node_modules/@stdlib/math/base/special/gammasgnf/benchmark/benchmark.js

@@ -30,18 +30,15 @@ var gammasgnf = require( './../lib' );
 // MAIN //
 
 bench( pkg, function benchmark( b ) {
-	var opts;
 	var len;
 	var x;
 	var y;
 	var i;
 
-	opts = {
-		'dtype': 'float32'
-	};
-
 	len = 100;
-	x = uniform( len, 0, 171, opts );
+	x = uniform( len, 0, 171, {
+		'dtype': 'float32'
+	});
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {

lib/node_modules/@stdlib/math/base/special/gammasgnf/benchmark/benchmark.native.js

@@ -39,18 +39,15 @@ var opts = {
 // MAIN //
 
 bench( pkg+'::native', opts, function benchmark( b ) {
-	var opts;
 	var len;
 	var x;
 	var y;
 	var i;
 
-	opts = {
-		'dtype': 'float32'
-	};
-
 	len = 100;
-	x = uniform( len, 0, 171, opts );
+	x = uniform( len, 0, 171, {
+		'dtype': 'float32'
+	});
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {

lib/node_modules/@stdlib/math/base/special/gammasgnf/benchmark/c/native/benchmark.c

@@ -92,12 +92,12 @@ static float rand_float( void ) {
 static double benchmark( void ) {
 	double elapsed;
 	float x[ 100 ];
-	float y;
 	double t;
+	float y;
 	int i;
 
 	for ( i = 0; i < 100; i++ ) {
-		x[ i ] = ( 171.0 * rand_float() ) - 0.0f;
+		x[ i ] = ( 171.0f * rand_float() ) - 0.0f;
 	}
 
 	t = tic();

lib/node_modules/@stdlib/math/base/special/gammasgnf/examples/index.js

@@ -21,7 +21,9 @@
 var linspace = require( '@stdlib/array/base/linspace' );
 var gammasgnf = require( './../lib' );
 
-var x = linspace( -10.0, 10.0, 100 );
+var x = linspace( -10.0, 10.0, 100, {
+	'dtype': 'float32'
+});
 
 var i;
 for ( i = 0; i < x.length; i++ ) {

lib/node_modules/@stdlib/math/base/special/gammasgnf/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@stdlib/math/base/special/gammasgnf",
   "version": "0.0.0",
-  "description": "Sign of the gamma function for a single precision-floating point number.",
+  "description": "Computes the sign of the gamma function for a single precision-floating point number.",
   "license": "Apache-2.0",
   "author": {
     "name": "The Stdlib Authors",

lib/node_modules/@stdlib/math/base/special/gammasgnf/src/main.c

@@ -28,7 +28,7 @@
 *
 * @example
 * var v = gammasgnf( 1.0f );
-* // returns 1.0
+* // returns 1.0f
 */
 float stdlib_base_gammasgnf( const float x ) {
 	float fx;

lib/node_modules/@stdlib/math/base/special/gammasgnf/test/fixtures/python/random.json

@@ -42,7 +42,7 @@ def gen(x, name):
     python> gen(x, './data.json')
     ```
     """
-    y = gammasgn(x.astype(np.float32))  # Ensure `gammasgn` input is float32
+    y = gammasgn(x).astype(np.float32)  # Ensure `gammasgn` input is float32
     data = {
         "x": x.tolist(),
         "expected": y.tolist()