simplify some constants definition

Author: zloirock

packages/core-js/modules/esnext.math.sum-precise.js

@@ -14,13 +14,9 @@ var pow = Math.pow;
 var push = uncurryThis([].push);
 
 var POW_2_1023 = pow(2, 1023);
-var MAX_SAFE_INTEGER = pow(2, 53) - 1;
-// exponent 11111111110, significand all 1s
-var MAX_DOUBLE = 1.79769313486231570815e+308; // 2 ** 1024 - 2 ** (1023 - 52)
-// exponent 11111111110, significand all 1s except final 0
-var PENULTIMATE_DOUBLE = 1.79769313486231550856e+308; // 2 ** 1024 - 2 * 2 ** (1023 - 52)
-// exponent 11111001010, significand all 0s
-var MAX_ULP = MAX_DOUBLE - PENULTIMATE_DOUBLE; // 1.99584030953471981166e+292, <- 2 ** (1023 - 52)
+var MAX_SAFE_INTEGER = pow(2, 53) - 1; // 2 ** 53 - 1 === 9007199254740992
+var MAX_DOUBLE = Number.MAX_VALUE; // 2 ** 1024 - 2 ** (1023 - 52) === 1.79769313486231570815e+308
+var MAX_ULP = pow(2, 971); // 2 ** (1023 - 52) === 1.99584030953471981166e+292
 
 var NOT_A_NUMBER = {};
 var MINUS_INFINITY = {};