refactor: modify C implementation to accept float values

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---

Author: gunjjoshi

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

@@ -174,19 +174,19 @@ logEachMap( 'negafibonaccif(%d) = %0.4f', v, negafibonaccif );
 Computes the nth [negaFibonacci number][fibonacci-number] as a [single-precision floating-point number][ieee754].
 
 ```c
-float out = stdlib_base_negafibonaccif( 0 );
+float out = stdlib_base_negafibonaccif( 0.0f );
 // returns 0.0f
 
-out = stdlib_base_negafibonaccif( -1 );
+out = stdlib_base_negafibonaccif( -1.0f );
 // returns 1.0f
 ```
 
 The function accepts the following arguments:
 
--   **n**: `[in] int32_t` input value.
+-   **n**: `[in] float` input value.
 
 ```c
-float stdlib_base_negafibonaccif( const int32_t n );
+float stdlib_base_negafibonaccif( const float n );
 ```
 
 </section>
@@ -210,15 +210,14 @@ float stdlib_base_negafibonaccif( const int32_t n );
 ```c
 #include "stdlib/math/base/special/negafibonaccif.h"
 #include <stdio.h>
-#include <stdint.h>
 
 int main( void ) {
-    int32_t i;
+    float i;
     float v;
 
-    for ( i = 0; i > -37; i-- ) {
+    for ( i = 0.0f; i > -37.0f; i-- ) {
         v = stdlib_base_negafibonaccif( i );
-        printf( "negafibonaccif(%d) = %f\n", i, v );
+        printf( "negafibonaccif(%f) = %f\n", i, v );
     }
 }
 ```

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

@@ -17,7 +17,6 @@
 */
 
 #include "stdlib/math/base/special/negafibonaccif.h"
-#include <stdint.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <math.h>
@@ -91,14 +90,14 @@ static float rand_float( void ) {
 * @return elapsed time in seconds
 */
 static double benchmark( void ) {
-	int32_t x[ 100 ];
+	float x[ 100 ];
 	double elapsed;
 	double t;
 	float y;
 	int i;
 
 	for ( i = 0; i < 100; i++ ) {
-		x[ i ] = (int32_t)floorf( 36.0f*rand_float());
+		x[ i ] = floorf( 36.0f*rand_float());
 	}
 
 	t = tic();

lib/node_modules/@stdlib/math/base/special/negafibonaccif/examples/c/example.c

@@ -18,14 +18,13 @@
 
 #include "stdlib/math/base/special/negafibonaccif.h"
 #include <stdio.h>
-#include <stdint.h>
 
 int main( void ) {
-	int32_t i;
+	float i;
 	float v;
 
-	for ( i = 0; i > -37; i-- ) {
+	for ( i = 0.0f; i > -37.0f; i-- ) {
 		v = stdlib_base_negafibonaccif( i );
-		printf( "negafibonaccif(%d) = %f\n", i, v );
+		printf( "negafibonaccif(%f) = %f\n", i, v );
 	}
 }

lib/node_modules/@stdlib/math/base/special/negafibonaccif/include/stdlib/math/base/special/negafibonaccif.h

@@ -19,8 +19,6 @@
 #ifndef STDLIB_MATH_BASE_SPECIAL_NEGAFIBONACCIF_H
 #define STDLIB_MATH_BASE_SPECIAL_NEGAFIBONACCIF_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.
 */
@@ -31,7 +29,7 @@ extern "C" {
 /**
 * Computes the nth negaFibonacci number as a single-precision floating-point number.
 */
-float stdlib_base_negafibonaccif( const int32_t n );
+float stdlib_base_negafibonaccif( const float n );
 
 #ifdef __cplusplus
 }

lib/node_modules/@stdlib/math/base/special/negafibonaccif/manifest.json

@@ -38,7 +38,8 @@
       "dependencies": [
         "@stdlib/math/base/napi/unary",
         "@stdlib/constants/float32/max-safe-nth-fibonacci",
-        "@stdlib/math/base/special/absf"
+        "@stdlib/math/base/special/absf",
+        "@stdlib/math/base/assert/is-integerf"
       ]
     },
     {
@@ -53,7 +54,8 @@
       "libpath": [],
       "dependencies": [
         "@stdlib/constants/float32/max-safe-nth-fibonacci",
-        "@stdlib/math/base/special/absf"
+        "@stdlib/math/base/special/absf",
+        "@stdlib/math/base/assert/is-integerf"
       ]
     },
     {
@@ -68,7 +70,8 @@
       "libpath": [],
       "dependencies": [
         "@stdlib/constants/float32/max-safe-nth-fibonacci",
-        "@stdlib/math/base/special/absf"
+        "@stdlib/math/base/special/absf",
+        "@stdlib/math/base/assert/is-integerf"
       ]
     }
   ]

lib/node_modules/@stdlib/math/base/special/negafibonaccif/src/addon.c

@@ -19,4 +19,4 @@
 #include "stdlib/math/base/special/negafibonaccif.h"
 #include "stdlib/math/base/napi/unary.h"
 
-STDLIB_MATH_BASE_NAPI_MODULE_I_F( stdlib_base_negafibonaccif )
+STDLIB_MATH_BASE_NAPI_MODULE_F_F( stdlib_base_negafibonaccif )

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

@@ -17,9 +17,10 @@
 */
 
 #include "stdlib/math/base/special/negafibonaccif.h"
+#include "stdlib/math/base/assert/is_integerf.h"
 #include "stdlib/math/base/special/absf.h"
 #include "stdlib/constants/float32/max_safe_nth_fibonacci.h"
-#include <stdint.h>
+#include <stdlib.h>
 
 static const float negafibonaccif_value[ 37 ] = {
 	0.0f,
@@ -68,17 +69,17 @@ static const float negafibonaccif_value[ 37 ] = {
 * @return     output value
 *
 * @example
-* float out = stdlib_base_negafibonaccif( -1 );
+* float out = stdlib_base_negafibonaccif( -1.0f );
 * // returns 1.0f
 */
-float stdlib_base_negafibonaccif( const int32_t n ) {
-	int32_t an;
-	if ( n > 0 ) {
+float stdlib_base_negafibonaccif( const float n ) {
+	float an;
+	if ( !stdlib_base_is_integerf( n ) || n > 0.0f ) {
 		return 0.0f / 0.0f; // NaN
 	}
 	an = stdlib_base_absf( n );
 	if ( an > STDLIB_CONSTANT_FLOAT32_MAX_SAFE_NTH_FIBONACCI ) {
 		return 0.0f / 0.0f; // NaN
 	}
-	return negafibonaccif_value[ an ];
+	return negafibonaccif_value[ (size_t)an ];
 }