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  1. Swift
  2. SR-106

description returns a rounded value of Double

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Medium
    • Resolution: Done
    • Component/s: Standard Library
    • Labels:
      None
    • Environment:
      >lldb -version
      lldb-340.4.110.1
      

      Description

      It looks like the string representation of a Double returned by description is less precise than the Double itself. Look at the example below.

      // swift
              let point = CGPoint(x: 350.00000000000017, y: 0)
              let value: CGFloat = 350.0
              
              if point.x == value { // correctly, will never be reached
                  print("")
              }
              print(point.x) // prints 350.0
      

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              • Assignee:
                tbkka Tim Kientzle
                Reporter:
                wczekalski Wojtek Czekalski
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                Dates

                • Created:
                  Updated:
                  Resolved: