Question

Can someone please show me the way to set the precision of a float number to desired length. Say I have a number 2504.6. As you see the precision here is only 1. I want to set it to six.I need this because I compare this value with the value obtained from
[txtInput.text floatValue]. And even if I enter 2504.6 to the text box it will add 5 more precisions and will be 2504.600098. And when I compare these two values they appear to be not equal.

Answer 1

You can compare the numbers using NSDecimalNumber:

NSDecimalNumber *number = [NSDecimalNumber numberWithFloat:2504.6f];
NSDecimalNumber *input = [NSDecimalNumber decimalNumberWithString:txtInput.text];
NSComparisonResult result = [number compare:input];

if (result == NSOrderedAscending) {
    // number < input
} else if (result == NSOrderedDescending) {
    // number > input
} else {
    // number == input
}