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iphoneobjective-cparsingdoublenslog

Objective C - Scientific Notation "String" into Double

I am reading in a text file with tons of values in this format: 1.36E-08

Is there a way to "parse" (i think thats the word i need) this value into a double? If I assign it straight forward it gives me 0. 

//this NSLogs out "0.00000"
double x = 1.36E-08;
Solution

  • I think You want this:

    NSDecimalNumber *decNumber = [NSDecimalNumber decimalNumberWithString:@"1.36e-08"];

NSLog(@"Number -> %g", [decNumber doubleValue]);

    Output:

    Number -> 1.36e-08