From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 16:29:10 +0200 Subject: Adding upstream version 86.0.1. Signed-off-by: Daniel Baumann --- js/src/builtin/Number.js | 99 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 js/src/builtin/Number.js (limited to 'js/src/builtin/Number.js') diff --git a/js/src/builtin/Number.js b/js/src/builtin/Number.js new file mode 100644 index 0000000000..dd0aee8374 --- /dev/null +++ b/js/src/builtin/Number.js @@ -0,0 +1,99 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#if JS_HAS_INTL_API +var numberFormatCache = new Record(); + +/** + * Format this Number object into a string, using the locale and formatting options + * provided. + * + * Spec: ECMAScript Language Specification, 5.1 edition, 15.7.4.3. + * Spec: ECMAScript Internationalization API Specification, 13.2.1. + */ +function Number_toLocaleString() { + // Steps 1-2. + var x = callFunction(ThisNumberValueForToLocaleString, this); + + // Steps 2-3. + var locales = arguments.length > 0 ? arguments[0] : undefined; + var options = arguments.length > 1 ? arguments[1] : undefined; + + // Step 4. + var numberFormat; + if (locales === undefined && options === undefined) { + // This cache only optimizes for the old ES5 toLocaleString without + // locales and options. + if (!IsRuntimeDefaultLocale(numberFormatCache.runtimeDefaultLocale)) { + numberFormatCache.numberFormat = intl_NumberFormat(locales, options); + numberFormatCache.runtimeDefaultLocale = RuntimeDefaultLocale(); + } + numberFormat = numberFormatCache.numberFormat; + } else { + numberFormat = intl_NumberFormat(locales, options); + } + + // Step 5. + return intl_FormatNumber(numberFormat, x, /* formatToParts = */ false, /* unitStyle = */ false); +} +#endif // JS_HAS_INTL_API + +// ES6 draft ES6 20.1.2.4 +function Number_isFinite(num) { + if (typeof num !== "number") + return false; + return num - num === 0; +} + +// ES6 draft ES6 20.1.2.2 +function Number_isNaN(num) { + if (typeof num !== "number") + return false; + return num !== num; +} + +// ES2021 draft rev 889f2f30cf554b7ed812c0984626db1c8a4997c7 +// 20.1.2.3 Number.isInteger ( number ) +function Number_isInteger(number) { + // Step 1. (Inlined call to IsIntegralNumber) + + // 7.2.6 IsIntegralNumber, step 1. + if (typeof number !== "number") + return false; + + var integer = std_Math_trunc(number); + + // 7.2.6 IsIntegralNumber, steps 2-4. + // |number - integer| ensures Infinity correctly returns false, because + // |Infinity - Infinity| yields NaN. + return number - integer === 0; +} + +// ES2021 draft rev 889f2f30cf554b7ed812c0984626db1c8a4997c7 +// 20.1.2.5 Number.isSafeInteger ( number ) +function Number_isSafeInteger(number) { + // Step 1. (Inlined call to IsIntegralNumber) + + // 7.2.6 IsIntegralNumber, step 1. + if (typeof number !== "number") + return false; + + var integer = std_Math_trunc(number); + + // 7.2.6 IsIntegralNumber, steps 2-4. + // |number - integer| to handle the Infinity case correctly. + if (number - integer !== 0) + return false; + + // Steps 1.a, 2. + return -((2 ** 53) - 1) <= integer && integer <= (2 ** 53) - 1; +} + +function Global_isNaN(number) { + return Number_isNaN(ToNumber(number)); +} + +function Global_isFinite(number) { + return Number_isFinite(ToNumber(number)); +} -- cgit v1.2.3