refactor: precompute constant

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Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/rayleigh/median/lib/main.js

@@ -21,13 +21,11 @@
 // MODULES //
 
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
-var sqrt = require( '@stdlib/math/base/special/sqrt' );
-var LN2 = require( '@stdlib/constants/float64/ln-two' );
 
 
 // VARIABLES //
 
-var SQRT2LN2 = sqrt( 2.0 * LN2 );
+var SQRT2LN2 = 1.1774100225154747; // sqrt(2*ln(2))
 
 
 // MAIN //

lib/node_modules/@stdlib/stats/base/dists/rayleigh/median/manifest.json

@@ -39,9 +39,7 @@
       "libpath": [],
       "dependencies": [
         "@stdlib/math/base/napi/unary",
-        "@stdlib/math/base/assert/is-nan",
-        "@stdlib/constants/float64/ln-two",
-        "@stdlib/math/base/special/sqrt"
+        "@stdlib/math/base/assert/is-nan"
       ]
     },
     {
@@ -57,9 +55,7 @@
       "libpath": [],
       "dependencies": [
         "@stdlib/math/base/assert/is-nan",
-        "@stdlib/constants/float64/ln-two",
-        "@stdlib/constants/float64/eps",
-        "@stdlib/math/base/special/sqrt"
+        "@stdlib/constants/float64/eps"
       ]
     },
     {
@@ -74,9 +70,7 @@
       "libraries": [],
       "libpath": [],
       "dependencies": [
-        "@stdlib/math/base/assert/is-nan",
-        "@stdlib/constants/float64/ln-two",
-        "@stdlib/math/base/special/sqrt"
+        "@stdlib/math/base/assert/is-nan"
       ]
     }
   ]

lib/node_modules/@stdlib/stats/base/dists/rayleigh/median/src/main.c

@@ -18,8 +18,8 @@
 
 #include "stdlib/stats/base/dists/rayleigh/median.h"
 #include "stdlib/math/base/assert/is_nan.h"
-#include "stdlib/math/base/special/sqrt.h"
-#include "stdlib/constants/float64/ln_two.h"
+
+static const double SQRT2LN2 = 1.1774100225154747; // sqrt(2*ln(2))
 
 /**
 * Returns the median of a Rayleigh distribution.
@@ -35,5 +35,5 @@ double stdlib_base_dists_rayleigh_median( const double sigma ) {
 	if ( stdlib_base_is_nan( sigma ) || sigma < 0 ) {
 		return 0.0 / 0.0; // NaN
 	}
-	return sigma * stdlib_base_sqrt( 2.0 * STDLIB_CONSTANT_FLOAT64_LN2 );
+	return sigma * SQRT2LN2;
 }