refactor: use int32_t instead of double for hypergeometric distribution parameters

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Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/hypergeometric/mode/README.md

@@ -170,18 +170,18 @@ for ( i = 0; i < 10; i++ ) {
 Returns the mode of a hypergeometric distribution.
 
 ```c
-double out = stdlib_base_dists_hypergeometric_mode( 16.0, 11.0, 4.0 );
+double out = stdlib_base_dists_hypergeometric_mode( 16, 11, 4 );
 // returns 3.0
 ```
 
 The function accepts the following arguments:
 
--   **N**: `[in] double` population size.
--   **K**: `[in] double` subpopulation size.
--   **n**: `[in] double` number of draws.
+-   **N**: `[in] int32_t` population size.
+-   **K**: `[in] int32_t` subpopulation size.
+-   **n**: `[in] int32_t` number of draws.
 
 ```c
-double stdlib_base_dists_hypergeometric_mode( const double N, const double K, const double n );
+double stdlib_base_dists_hypergeometric_mode( const int32_t N, const int32_t K, const int32_t n );
 ```
 
 </section>
@@ -204,28 +204,28 @@ double stdlib_base_dists_hypergeometric_mode( const double N, const double K, co
 
 ```c
 #include "stdlib/stats/base/dists/hypergeometric/mode.h"
-#include "stdlib/math/base/special/round.h"
 #include <stdlib.h>
 #include <stdio.h>
+#include <stdint.h>
 
-static double random_uniform( const double min, const double max ) {
-    double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
-    return min + ( v*(max-min) );
+static int32_t random_int( const int32_t min, const int32_t max ) {
+    int32_t v = rand() % ( max - min + 1 );
+    return min + v;
 }
 
 int main( void ) {
-    double N;
-    double K;
-    double n;
+    int32_t N;
+    int32_t K;
+    int32_t n;
     double y;
     int i;
 
     for ( i = 0; i < 10; i++ ) {
-        N = stdlib_base_round(random_uniform(0.0, 20.0));
-        K = stdlib_base_round(random_uniform(0.0, N));
-        n = stdlib_base_round(random_uniform(0.0, K));
-        y = stdlib_base_dists_hypergeometric_mode(N, K, n);
-        printf("N: %.0f, K: %.0f, n: %.0f, mode(X;N,K,n): %.4f\n", N, K, n, y);
+        N = random_int( 1, 20 );
+        K = random_int( 0, N );
+        n = random_int( 0, K );
+        y = stdlib_base_dists_hypergeometric_mode( N, K, n );
+        printf( "N: %d, K: %d, n: %d, mode(X;N,K,n): %.4f\n", N, K, n, y );
     }
 }
 ```

lib/node_modules/@stdlib/stats/base/dists/hypergeometric/mode/benchmark/c/benchmark.c

@@ -17,10 +17,9 @@
 */
 
 #include "stdlib/stats/base/dists/hypergeometric/mode.h"
-#include "stdlib/math/base/special/ceil.h"
-#include "stdlib/math/base/special/floor.h"
 #include <stdlib.h>
 #include <stdio.h>
+#include <stdint.h>
 #include <math.h>
 #include <time.h>
 #include <sys/time.h>
@@ -77,15 +76,15 @@ static double tic( void ) {
 }
 
 /**
-* Generates a random number on the interval [min,max).
+* Generates a random integer on the interval [min,max].
 *
 * @param min    minimum value (inclusive)
-* @param max    maximum value (exclusive)
-* @return       random number
+* @param max    maximum value (inclusive)
+* @return       random integer
 */
-static double random_uniform( const double min, const double max ) {
-	double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
-	return min + ( v*(max-min) );
+static int32_t random_int( const int32_t min, const int32_t max ) {
+	int32_t v = rand() % ( max - min + 1 );
+	return min + v;
 }
 
 /**
@@ -95,17 +94,17 @@ static double random_uniform( const double min, const double max ) {
 */
 static double benchmark( void ) {
 	double elapsed;
-    double N[ 100 ];
-    double K[ 100 ];
-    double n[ 100 ];
+	int32_t N[ 100 ];
+	int32_t K[ 100 ];
+	int32_t n[ 100 ];
 	double y;
 	double t;
 	int i;
 
 	for ( i = 0; i < 100; i++ ) {
-		N[i] = stdlib_base_ceil(random_uniform(1.0, 100.0));
-        K[i] = stdlib_base_floor(random_uniform(0.0, N[i]));
-        n[i] = stdlib_base_floor(random_uniform(0.0, N[i]));
+		N[i] = random_int( 1, 100 );
+		K[i] = random_int( 0, N[i] );
+		n[i] = random_int( 0, N[i] );
 	}
 
 	t = tic();

lib/node_modules/@stdlib/stats/base/dists/hypergeometric/mode/examples/c/example.c

@@ -17,27 +17,27 @@
 */
 
 #include "stdlib/stats/base/dists/hypergeometric/mode.h"
-#include "stdlib/math/base/special/round.h"
 #include <stdlib.h>
 #include <stdio.h>
+#include <stdint.h>
 
-static double random_uniform( const double min, const double max ) {
-	double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
-	return min + ( v*(max-min) );
+static int32_t random_int( const int32_t min, const int32_t max ) {
+	int32_t v = rand() % ( max - min + 1 );
+	return min + v;
 }
 
 int main( void ) {
-	double N;
-    double K;
-    double n;
-    double y;
-    int i;
+	int32_t N;
+	int32_t K;
+	int32_t n;
+	double y;
+	int i;
 
 	for ( i = 0; i < 10; i++ ) {
-		N = stdlib_base_round(random_uniform(0.0, 20.0));
-        K = stdlib_base_round(random_uniform(0.0, N));
-        n = stdlib_base_round(random_uniform(0.0, K));
-		y = stdlib_base_dists_hypergeometric_mode(N, K, n);
-        printf("N: %.0f, K: %.0f, n: %.0f, mode(X;N,K,n): %.4f\n", N, K, n, y);
+		N = random_int( 1, 20 );
+		K = random_int( 0, N );
+		n = random_int( 0, K );
+		y = stdlib_base_dists_hypergeometric_mode( N, K, n );
+		printf( "N: %d, K: %d, n: %d, mode(X;N,K,n): %.4f\n", N, K, n, y );
 	}
 }

lib/node_modules/@stdlib/stats/base/dists/hypergeometric/mode/include/stdlib/stats/base/dists/hypergeometric/mode.h

@@ -19,6 +19,8 @@
 #ifndef STDLIB_STATS_BASE_DISTS_HYPERGEOMETRIC_MODE_H
 #define STDLIB_STATS_BASE_DISTS_HYPERGEOMETRIC_MODE_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 mode of a hypergeometric distribution.
 */
-double stdlib_base_dists_hypergeometric_mode( const double N, const double K, const double n );
+double stdlib_base_dists_hypergeometric_mode( const int32_t N, const int32_t K, const int32_t n );
 
 #ifdef __cplusplus
 }

lib/node_modules/@stdlib/stats/base/dists/hypergeometric/mode/manifest.json

@@ -38,10 +38,7 @@
       "libraries": [],
       "libpath": [],
       "dependencies": [
-        "@stdlib/math/base/assert/is-nonnegative-integer",
         "@stdlib/math/base/napi/ternary",
-        "@stdlib/math/base/assert/is-nan",
-        "@stdlib/constants/float64/pinf",
         "@stdlib/math/base/special/floor"
       ]
     },
@@ -57,11 +54,7 @@
       "libraries": [],
       "libpath": [],
       "dependencies": [
-        "@stdlib/math/base/assert/is-nonnegative-integer",
-        "@stdlib/math/base/assert/is-nan",
-        "@stdlib/math/base/special/ceil",
-        "@stdlib/math/base/special/floor",
-        "@stdlib/constants/float64/pinf"
+        "@stdlib/math/base/special/floor"
       ]
     },
     {
@@ -76,10 +69,6 @@
       "libraries": [],
       "libpath": [],
       "dependencies": [
-        "@stdlib/math/base/assert/is-nonnegative-integer",
-        "@stdlib/math/base/special/round",
-        "@stdlib/math/base/assert/is-nan",
-        "@stdlib/constants/float64/pinf",
         "@stdlib/math/base/special/floor"
       ]
     }

lib/node_modules/@stdlib/stats/base/dists/hypergeometric/mode/src/addon.c

@@ -20,4 +20,4 @@
 #include "stdlib/math/base/napi/ternary.h"
 
 // cppcheck-suppress shadowFunction
-STDLIB_MATH_BASE_NAPI_MODULE_DDD_D( stdlib_base_dists_hypergeometric_mode )
+STDLIB_MATH_BASE_NAPI_MODULE_III_D( stdlib_base_dists_hypergeometric_mode )

lib/node_modules/@stdlib/stats/base/dists/hypergeometric/mode/src/main.c

@@ -17,10 +17,8 @@
 */
 
 #include "stdlib/stats/base/dists/hypergeometric/mode.h"
-#include "stdlib/math/base/assert/is_nan.h"
-#include "stdlib/math/base/assert/is_nonnegative_integer.h"
-#include "stdlib/constants/float64/pinf.h"
 #include "stdlib/math/base/special/floor.h"
+#include <stdint.h>
 
 /**
 * Returns the mode of a hypergeometric distribution.
@@ -31,27 +29,12 @@
 * @return   mode
 *
 * @example
-* double v = stdlib_base_dists_hypergeometric_mode( 16.0, 11.0, 4.0 );
+* double v = stdlib_base_dists_hypergeometric_mode( 16, 11, 4 );
 * // returns 3.0
 */
-double stdlib_base_dists_hypergeometric_mode( const double N, const double K, const double n ) {
-	if (
-		stdlib_base_is_nan( N) ||
-		stdlib_base_is_nan( K ) ||
-        stdlib_base_is_nan( n )
-	) {
-		return 0.0 / 0.0; // NaN
+double stdlib_base_dists_hypergeometric_mode( const int32_t N, const int32_t K, const int32_t n ) {
+	if ( N < 0 || K < 0 || n < 0 || K > N || n > N ) {
+		return 0.0/0.0; // NaN
 	}
-	if (
-        !stdlib_base_is_nonnegative_integer(N) ||
-        !stdlib_base_is_nonnegative_integer(K) ||
-        !stdlib_base_is_nonnegative_integer(n) ||
-        N == STDLIB_CONSTANT_FLOAT64_PINF ||
-        K == STDLIB_CONSTANT_FLOAT64_PINF ||
-        K > N ||
-        n > N
-    ) {
-        return 0.0 / 0.0; // NaN
-    }
-	return stdlib_base_floor( ((n + 1.0) * (K + 1.0)) / (N + 2.0) );
+	return stdlib_base_floor( ( ( (double)n + 1.0 ) * ( (double)K + 1.0 ) ) / ( (double)N + 2.0 ) );
 }