fix: updated the datatype for k

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---

Author: Lokeshranjan8

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

@@ -202,11 +202,11 @@ double y = stdlib_base_dists_erlang_cdf( 2.0, 1, 1.0 );
 The function accepts the following arguments:
 
 -   **x**: `[in] double` input value.
--   **k**: `[in] double` shape parameter.
+-   **k**: `[in] int32_t` shape parameter.
 -   **lambda**: `[in] double` rate parameter.
 
 ```c
-double stdlib_base_dists_erlang_cdf( const double t, const double k, const double lambda );
+double stdlib_base_dists_erlang_cdf( const double t, const int32_t k, const double lambda );
 ```
 
 </section>
@@ -240,9 +240,9 @@ static double random_uniform( const double min, const double max ) {
 }
 
 int main( void ) {
+    double lamda;
     double x;
     int32_t k;
-    double lamda;
     double y;
     int i;
 

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

@@ -19,6 +19,8 @@
 #ifndef STDLIB_STATS_BASE_DISTS_ERLANG_CDF_H
 #define STDLIB_STATS_BASE_DISTS_ERLANG_CDF_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" {
 /**
 * Evaluates the cumulative distribution function (CDF) for an Erlang distribution with shape parameter `k` and rate parameter `lambda` at a value `x`.
 */
-double stdlib_base_dists_erlang_cdf( const double x, const double k, const double lambda );
+double stdlib_base_dists_erlang_cdf( const double x, const int32_t k, const double lambda );
 
 #ifdef __cplusplus
 }

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

@@ -19,4 +19,4 @@
 #include "stdlib/stats/base/dists/erlang/cdf.h"
 #include "stdlib/math/base/napi/ternary.h"
 
-STDLIB_MATH_BASE_NAPI_MODULE_DDD_D( stdlib_base_dists_erlang_cdf )
+STDLIB_MATH_BASE_NAPI_MODULE_DID_D( stdlib_base_dists_erlang_cdf )

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

@@ -21,6 +21,7 @@
 #include "stdlib/stats/base/dists/gamma/cdf.h"
 #include <stdint.h>
 
+
 /**
 * Evaluates the cumulative distribution function (CDF) for an Erlang distribution with shape parameter `k` and rate parameter `lambda` at a value `x`.
 *
@@ -33,11 +34,12 @@
 * double y = stdlib_base_dists_erlang_cdf( 2.0, 1, 1.0 );
 * // returns ~0.865
 */
-double stdlib_base_dists_erlang_cdf( const double x, const double k, const double lambda ) {
+double stdlib_base_dists_erlang_cdf( const double x, const int32_t k, const double lambda ) {
 	if (
-		!stdlib_base_is_nonnegative_integer( k )
+		!stdlib_base_is_nonnegative_integer( k ) ||
+		k <= 0
 	) {
 		return 0.0 / 0.0;
 	}
-	return stdlib_base_dists_gamma_cdf( x, k, lambda );
+	return stdlib_base_dists_gamma_cdf( x, (double)k, lambda );
 }

lib/node_modules/@stdlib/stats/base/dists/erlang/cdf/test/fixtures/julia/data.json

@@ -72,6 +72,6 @@ dir = dirname( file );
 
 # Generate fixtures:
 x = rand( 1500 ) .* 5.0;
-k = round.( Int64, ( rand( 1500 ) .* 10.0 ) .+ 10.0 );
+k = round.( Int, ( rand( 1500 ) .* 10.0 ) .+ 10.0 );
 lambda = rand( 1500 ) .* 10.0;
 gen( x, k, lambda, "data.json" );