chore: replace pow with stdlib equivalent

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---

Author: anandkaranubc

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

@@ -41,6 +41,7 @@
         "@stdlib/math/base/napi/binary",
         "@stdlib/math/base/special/abs",
         "@stdlib/math/base/special/floor",
+        "@stdlib/math/base/special/pow",
         "@stdlib/math/base/assert/is-infinite",
         "@stdlib/math/base/assert/is-nan",
         "@stdlib/constants/float64/min-base10-exponent",
@@ -65,6 +66,7 @@
       "dependencies": [
         "@stdlib/math/base/special/abs",
         "@stdlib/math/base/special/floor",
+        "@stdlib/math/base/special/pow",
         "@stdlib/math/base/assert/is-infinite",
         "@stdlib/math/base/assert/is-nan",
         "@stdlib/constants/float64/min-base10-exponent",
@@ -89,6 +91,7 @@
       "dependencies": [
         "@stdlib/math/base/special/abs",
         "@stdlib/math/base/special/floor",
+        "@stdlib/math/base/special/pow",
         "@stdlib/math/base/assert/is-infinite",
         "@stdlib/math/base/assert/is-nan",
         "@stdlib/constants/float64/min-base10-exponent",

lib/node_modules/@stdlib/math/base/special/floorn/src/floorn.c

@@ -19,6 +19,7 @@
 #include "stdlib/math/base/special/floorn.h"
 #include "stdlib/math/base/special/abs.h"
 #include "stdlib/math/base/special/floor.h"
+#include "stdlib/math/base/special/pow.h"
 #include "stdlib/math/base/assert/is_infinite.h"
 #include "stdlib/math/base/assert/is_nan.h"
 #include "stdlib/constants/float64/min_base10_exponent.h"
@@ -133,14 +134,14 @@ double stdlib_base_floorn( const double x, const int32_t n ) {
 	}
 	// If we overflow, return `x`, as the number of digits to the right of the decimal is too small (i.e., `x` is too large / lacks sufficient fractional precision) for there to be any effect when rounding...
 	if ( n < STDLIB_CONSTANT_FLOAT64_MIN_BASE10_EXPONENT ) {
-		s = pow( 10.0, - ( n + STDLIB_CONSTANT_FLOAT64_MAX_BASE10_EXPONENT ) ); // TODO: replace use of `pow` once have stdlib equivalent
+		s = stdlib_base_pow( 10.0, - ( n + STDLIB_CONSTANT_FLOAT64_MAX_BASE10_EXPONENT ) );
 		y = ( x * HUGE_VALUE ) * s; // order of operation matters!
 		if ( stdlib_base_is_infinite( y ) ) {
 			return x;
 		}
 		return ( stdlib_base_floor( y ) / HUGE_VALUE ) / s;
 	}
-	s = pow( 10.0, -n ); // TODO: replace use of `pow` once have stdlib equivalent
+	s = stdlib_base_pow( 10.0, -n );
 	y = x * s;
 	if ( stdlib_base_is_infinite( y ) ) {
 		return x;