fix: using int32_t instead of double for k

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---

Author: vivekmaurya001

lib/node_modules/@stdlib/stats/base/dists/erlang/stdev/README.md

@@ -182,11 +182,11 @@ double out = stdlib_base_dists_erlang_stdev( 1, 1.0 );
 
 The function accepts the following arguments:
 
--   **k**: `[in] double` shape parameter.
+-   **k**: `[in] int32_t` shape parameter.
 -   **lambda**: `[in] double` rate parameter.
 
 ```c
-double stdlib_base_dists_erlang_stdev( const double k, const double lambda );
+double stdlib_base_dists_erlang_stdev( const int32_t k, const double lambda );
 ```
 
 </section>
@@ -211,6 +211,7 @@ double stdlib_base_dists_erlang_stdev( const double k, const double lambda );
 #include "stdlib/stats/base/dists/erlang/stdev.h"
 #include "stdlib/constants/float64/eps.h"
 #include "stdlib/math/base/special/round.h"
+#include <stdint.h>
 #include <stdlib.h>
 #include <stdio.h>
 
@@ -221,15 +222,15 @@ static double random_uniform( const double min, const double max ) {
 
 int main( void ) {
     double lambda;
-    double k;
+    int32_t k;
     double y;
     int i;
 
     for ( i = 0; i < 25; i++ ) {
-        k = stdlib_base_round(random_uniform( 0.0, 10.0 ));
-        lambda = random_uniform( 0.0, 10.0 ) + STDLIB_CONSTANT_FLOAT64_EPS;
+        k = stdlib_base_round( random_uniform( 0.0, 10.0 ) );
+        lambda = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 10.0 );
         y = stdlib_base_dists_erlang_stdev( k, lambda );
-        printf( "k: %lf, λ: %lf, SD(X;k,λ): %lf\n", k, lambda, y );
+        printf( "k: %d, λ: %lf, SD(X;k,λ): %lf\n", k, lambda, y );
     }
 }
 ```

lib/node_modules/@stdlib/stats/base/dists/erlang/stdev/benchmark/benchmark.native.js

@@ -22,9 +22,10 @@
 
 var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
+var discreteUniform = require( '@stdlib/random/base/discrete-uniform' );
+var uniform = require( '@stdlib/random/base/uniform' );
 var Float64Array = require( '@stdlib/array/float64' );
-var randu = require( '@stdlib/random/base/randu' );
-var ceil = require( '@stdlib/math/base/special/ceil' );
+var Int32Array = require( '@stdlib/array/int32' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var tryRequire = require( '@stdlib/utils/try-require' );
@@ -49,11 +50,11 @@ bench( pkg+'::native', opts, function benchmark( b ) {
 	var i;
 
 	len = 100;
-	k = new Float64Array( len );
+	k = new Int32Array( len );
 	lambda = new Float64Array( len );
 	for ( i = 0; i < len; i++ ) {
-		k[ i ] = ceil( randu()*10.0 );
-		lambda[ i ] = ( randu()*10.0 ) + EPS;
+		k[ i ] = discreteUniform( 1, 10 );
+		lambda[ i ] = uniform( EPS, 10.0 );
 	}
 
 	b.tic();

lib/node_modules/@stdlib/stats/base/dists/erlang/stdev/benchmark/c/benchmark.c

@@ -19,6 +19,7 @@
 #include "stdlib/stats/base/dists/erlang/stdev.h"
 #include "stdlib/math/base/special/ceil.h"
 #include "stdlib/constants/float64/eps.h"
+#include <stdint.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <math.h>
@@ -96,14 +97,14 @@ static double random_uniform( const double min, const double max ) {
 static double benchmark( void ) {
 	double elapsed;
 	double lambda[ 100 ];
-	double k[ 100 ];
+	int32_t k[ 100 ];
 	double y;
 	double t;
 	int i;
 
 	for ( i = 0; i < 100; i++ ) {
-		k[ i ] = stdlib_base_ceil(random_uniform( 0.0, 10.0 ));
-		lambda[ i ] = random_uniform( 0.0, 10.0 ) + STDLIB_CONSTANT_FLOAT64_EPS;
+		lambda[ i ] = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 10.0 );
+		k[ i ] = stdlib_base_ceil(random_uniform( 1.0, 10.0 ));
 	}
 
 	t = tic();

lib/node_modules/@stdlib/stats/base/dists/erlang/stdev/examples/c/example.c

@@ -19,6 +19,7 @@
 #include "stdlib/stats/base/dists/erlang/stdev.h"
 #include "stdlib/constants/float64/eps.h"
 #include "stdlib/math/base/special/round.h"
+#include <stdint.h>
 #include <stdlib.h>
 #include <stdio.h>
 
@@ -29,14 +30,14 @@ static double random_uniform( const double min, const double max ) {
 
 int main( void ) {
 	double lambda;
-	double k;
+	int32_t k;
 	double y;
 	int i;
 
 	for ( i = 0; i < 25; i++ ) {
-		k = stdlib_base_round(random_uniform( 0.0, 10.0 ));
-		lambda = random_uniform( 0.0, 10.0 ) + STDLIB_CONSTANT_FLOAT64_EPS;
+		k = stdlib_base_round( random_uniform( 0.0, 10.0 ) );
+		lambda = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 10.0 );
 		y = stdlib_base_dists_erlang_stdev( k, lambda );
-		printf( "k: %lf, λ: %lf, SD(X;k,λ): %lf\n", k, lambda, y );
+		printf( "k: %d, λ: %lf, SD(X;k,λ): %lf\n", k, lambda, y );
 	}
 }

lib/node_modules/@stdlib/stats/base/dists/erlang/stdev/include/stdlib/stats/base/dists/erlang/stdev.h

@@ -19,6 +19,8 @@
 #ifndef STDLIB_STATS_BASE_DISTS_ERLANG_STDEV_H
 #define STDLIB_STATS_BASE_DISTS_ERLANG_STDEV_H
 
+#include <stdint.h>
+
 /*
 * If C++, prevent name mangling so that the compiler emits a binary file having undecorated names, thus mirroring the behavior of a C compiler.
 */
@@ -29,7 +31,7 @@ extern "C" {
 /**
 * Returns the standard deviation of an Erlang distribution.
 */
-double stdlib_base_dists_erlang_stdev( const double k, const double lambda );
+double stdlib_base_dists_erlang_stdev( const int32_t k, const double lambda );
 
 #ifdef __cplusplus
 }

lib/node_modules/@stdlib/stats/base/dists/erlang/stdev/lib/native.js

@@ -46,10 +46,6 @@ var addon = require( './../src/addon.node' );
 * // returns ~1.414
 *
 * @example
-* var v = stdev( 1.5, 2.0 );
-* // returns NaN
-*
-* @example
 * var v = stdev( 1, -0.1 );
 * // returns NaN
 *

lib/node_modules/@stdlib/stats/base/dists/erlang/stdev/manifest.json

@@ -40,7 +40,6 @@
       "dependencies": [
         "@stdlib/math/base/napi/binary",
         "@stdlib/math/base/assert/is-nan",
-        "@stdlib/math/base/assert/is-positive-integer",
         "@stdlib/math/base/special/sqrt"
       ]
     },
@@ -57,7 +56,6 @@
       "libpath": [],
       "dependencies": [
         "@stdlib/math/base/assert/is-nan",
-        "@stdlib/math/base/assert/is-positive-integer",
         "@stdlib/math/base/special/sqrt",
         "@stdlib/constants/float64/eps",
         "@stdlib/math/base/special/ceil"
@@ -76,7 +74,6 @@
       "libpath": [],
       "dependencies": [
         "@stdlib/math/base/assert/is-nan",
-        "@stdlib/math/base/assert/is-positive-integer",
         "@stdlib/math/base/special/sqrt",
         "@stdlib/constants/float64/eps",
         "@stdlib/math/base/special/round"

lib/node_modules/@stdlib/stats/base/dists/erlang/stdev/src/addon.c

@@ -20,4 +20,4 @@
 #include "stdlib/math/base/napi/binary.h"
 
 // cppcheck-suppress shadowFunction
-STDLIB_MATH_BASE_NAPI_MODULE_DD_D( stdlib_base_dists_erlang_stdev )
+STDLIB_MATH_BASE_NAPI_MODULE_ID_D( stdlib_base_dists_erlang_stdev )

lib/node_modules/@stdlib/stats/base/dists/erlang/stdev/src/main.c

@@ -17,10 +17,9 @@
 */
 
 #include "stdlib/stats/base/dists/erlang/stdev.h"
-#include "stdlib/math/base/assert/is_positive_integer.h"
 #include "stdlib/math/base/assert/is_nan.h"
 #include "stdlib/math/base/special/sqrt.h"
-
+#include <stdint.h>
 
 /**
 * Returns the standard deviation of an Erlang distribution.
@@ -30,12 +29,12 @@
 * @return          standard deviation
 *
 * @example
-* double y = stdlib_base_erlang_stdev( 1, 1.0 );
+* double y = stdlib_base_dists_erlang_stdev( 1, 1.0 );
 * // returns 1.0
 */
-double stdlib_base_dists_erlang_stdev( const double k, const double lambda ) {
+double stdlib_base_dists_erlang_stdev( const int32_t k, const double lambda ) {
 	if (
-		!stdlib_base_is_positive_integer( k ) ||
+		k <= 0.0 ||
 		stdlib_base_is_nan( lambda ) ||
 		lambda <= 0.0
 	) {

lib/node_modules/@stdlib/stats/base/dists/erlang/stdev/test/test.native.js

@@ -64,12 +64,6 @@ tape( 'if provided `NaN` for any parameter, the function returns `NaN`', opts, f
 tape( 'if provided a `k` that is not a positive integer, the function returns `NaN`', opts, function test( t ) {
 	var y;
 
-	y = stdev( 1.5, 2.0 );
-	t.equal( isnan( y ), true, 'returns NaN' );
-
-	y = stdev( 3.9, 2.0 );
-	t.equal( isnan( y ), true, 'returns NaN' );
-
 	y = stdev( 0.0, 2.0 );
 	t.equal( isnan( y ), true, 'returns NaN' );