1 // Copyright 2011 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_I18N_NUMBER_FORMATTING_H_ 6 #define BASE_I18N_NUMBER_FORMATTING_H_ 7 8 #include <stdint.h> 9 10 #include <string> 11 12 #include "base/i18n/base_i18n_export.h" 13 14 namespace base { 15 16 // Return a number formatted with separators in the user's locale. 17 // Ex: FormatNumber(1234567) => "1,234,567" in English, "1.234.567" in German 18 BASE_I18N_EXPORT std::u16string FormatNumber(int64_t number); 19 20 // Return a number formatted with separators in the user's locale, with 21 // `fractional_digits` digits after the decimal point. 22 // Ex: FormatDouble(1234567.8, 1) 23 // => "1,234,567.8" in English, "1.234.567,8" in German 24 BASE_I18N_EXPORT std::u16string FormatDouble(double number, 25 int fractional_digits); 26 27 // Return a number formatted with separators in the user's locale, with up to 28 // `max_fractional_digits` digits after the decimal point, and eliminating 29 // trailing zeroes after `min_fractional_digits`. 30 // Ex: FormatDouble(1234567.8, 0, 4) 31 // => "1,234,567.8" in English, "1.234.567,8" in German 32 // Ex: FormatDouble(1234567.888888, 0, 4) 33 // => "1,234,567.8889" in English, "1.234.567,8889" in German 34 BASE_I18N_EXPORT std::u16string FormatDouble(double number, 35 int min_fractional_digits, 36 int max_fractional_digits); 37 38 // Return a percentage formatted with space and symbol in the user's locale. 39 // Ex: FormatPercent(12) => "12%" in English, "12 %" in Romanian 40 BASE_I18N_EXPORT std::u16string FormatPercent(int number); 41 42 // Causes cached formatters to be discarded and recreated. Only useful for 43 // testing. 44 BASE_I18N_EXPORT void ResetFormattersForTesting(); 45 46 } // namespace base 47 48 #endif // BASE_I18N_NUMBER_FORMATTING_H_ 49