Created
September 17, 2013 04:03
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Using NSNumberFormatter to read in decimal numbers has rounding problems. However decimalNumberWithString can't grok currency symbols, so I'm using NSNumberFormatter.
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| NSLocale *locale = [NSLocale localeWithLocaleIdentifier:@"en_US"]; | |
| NSNumberFormatter *inputFormatter = [[NSNumberFormatter alloc] init]; | |
| [inputFormatter setLocale:locale]; | |
| [inputFormatter setNumberStyle:NSNumberFormatterDecimalStyle]; | |
| [inputFormatter setLenient:YES]; | |
| [inputFormatter setGeneratesDecimalNumbers:YES]; | |
| NSDecimalNumber *a = (NSDecimalNumber *)[inputFormatter numberFromString:@"87.85"]; | |
| NSDecimalNumber *b = [NSDecimalNumber decimalNumberWithString:@"87.85"]; | |
| NSString *pa = [a descriptionWithLocale:locale]; | |
| NSString *pb = [b descriptionWithLocale:locale]; | |
| NSLog(@"%@",pa); // prints 87.84999999999999 | |
| NSLog(@"%@",pb); // prints 87.85 |
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Just out of curiosity, have you found a way to convince NSNumberFormatter to actually generate decimal numbers without going through floats in between? I'm having the same problem... I don't want to use decimalNumberWithString because the decimal separator symbol might be different depending on locale.