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LibJS: Add Number constants

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Linus Groh 2020-04-07 17:06:26 +01:00 • committed by Andreas Kling
parent f85aa8462f
commit b7032b4972
Notes: sideshowbarker 2024-07-19 07:49:25 +09:00
2 changed files with 22 additions and 0 deletions
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7
Libraries/LibJS/Runtime/NumberConstructor.cpp
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@ -28,6 +28,7 @@
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/NumberConstructor.h>
#include <LibJS/Runtime/NumberObject.h>
#include <math.h>
namespace JS {
@ -35,6 +36,12 @@ NumberConstructor::NumberConstructor()
{
put("prototype", interpreter().number_prototype());
put("length", Value(1));
put("EPSILON", Value(pow(2, -52)));
put("MAX_SAFE_INTEGER", Value(pow(2, 53) - 1));
put("MIN_SAFE_INTEGER", Value(-(pow(2, 53) - 1)));
put("NEGATIVE_INFINITY", Value(-js_infinity().as_double()));
put("POSITIVE_INFINITY", js_infinity());
put("NaN", js_nan());
}
NumberConstructor::~NumberConstructor()

15
Libraries/LibJS/Tests/Number-constants.js Normal file
View file

@ -0,0 +1,15 @@
try {
assert(Number.EPSILON === 2 ** -52);
assert(Number.EPSILON > 0);
assert(Number.MAX_SAFE_INTEGER === 2 ** 53 - 1);
assert(Number.MAX_SAFE_INTEGER + 1 === Number.MAX_SAFE_INTEGER + 2);
assert(Number.MIN_SAFE_INTEGER === -(2 ** 53 - 1));
assert(Number.MIN_SAFE_INTEGER - 1 === Number.MIN_SAFE_INTEGER - 2);
assert(Number.POSITIVE_INFINITY === Infinity);
assert(Number.NEGATIVE_INFINITY === -Infinity);
assert(isNaN(Number.NaN));
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e);
}