refactor: use abs instead of labs

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---

Author: gunjjoshi

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

@@ -37,7 +37,7 @@
       "libpath": [],
       "dependencies": [
         "@stdlib/math/base/napi/unary",
-        "@stdlib/math/base/special/labs",
+        "@stdlib/math/base/special/abs",
         "@stdlib/constants/float64/max-safe-nth-lucas",
         "@stdlib/math/base/assert/is-integer"
       ]
@@ -53,7 +53,7 @@
       "libraries": [],
       "libpath": [],
       "dependencies": [
-        "@stdlib/math/base/special/labs",
+        "@stdlib/math/base/special/abs",
         "@stdlib/constants/float64/max-safe-nth-lucas",
         "@stdlib/math/base/assert/is-integer"
       ]
@@ -69,7 +69,7 @@
       "libraries": [],
       "libpath": [],
       "dependencies": [
-        "@stdlib/math/base/special/labs",
+        "@stdlib/math/base/special/abs",
         "@stdlib/constants/float64/max-safe-nth-lucas",
         "@stdlib/math/base/assert/is-integer"
       ]

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

@@ -18,7 +18,7 @@
 
 #include "stdlib/math/base/special/negalucas.h"
 #include "stdlib/math/base/assert/is_integer.h"
-#include "stdlib/math/base/special/labs.h"
+#include "stdlib/math/base/special/abs.h"
 #include "stdlib/constants/float64/max_safe_nth_lucas.h"
 #include <stdint.h>
 #include <stdlib.h>
@@ -118,8 +118,8 @@ static const int64_t negalucas_value[ 77 ] = {
 * // returns NaN
 */
 double stdlib_base_negalucas( const double n ) {
-	double an = stdlib_base_labs( n );
-	if ( !stdlib_base_is_integer( n ) || n > 0 || an > STDLIB_CONSTANT_FLOAT64_MAX_SAFE_NTH_LUCAS ) {
+	double an = stdlib_base_abs( n );
+	if ( !stdlib_base_is_integer( n ) || n > 0.0 || an > STDLIB_CONSTANT_FLOAT64_MAX_SAFE_NTH_LUCAS ) {
 		return 0.0 / 0.0; // NaN
 	}
 	return negalucas_value[ (size_t)an ];