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  3. BUG in Windows Calc [modified]

BUG in Windows Calc [modified]

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  • R riced

    Hiren Solanki wrote:

    But It comes back with '-8.1648465955514287168521180122928e-39

    Or -0.00000000000000000000000000000000000000081648465955514287168521180122928 in real numbers :laugh: Oops - missed the leading 0.

    Regards David R --------------------------------------------------------------- "Every program eventually becomes rococo, and then rubble." - Alan Perlis The only valid measurement of code quality: WTFs/minute.

    D Offline
    D Offline
    Dalek Dave
    wrote on last edited by
    #9

    It is very close to zero.

    ------------------------------------ I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC League Table Link CCC Link[^]

    1 Reply Last reply
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    • H Hiren solanki

      Follow the procedure click '4' click 'sqrt' click '-'(Minus sign) click '2' Answer should be 0 But It comes back with '-8.1648465955514287168521180122928e-39' answer ;P [Edit] Tested with XP and Seven _[/More Edit] Windows Server 2008 R2 comes same with yet another answer '-1.068281969439142e-19' _[/More Edit] [/Edit]

      Rating is Always appreciated.
      Regards,
      Hiren Solanki.
      Indian Forum | My Articles | My Profile


      "You will always find me near 127.0.0.1"

      modified on Monday, November 1, 2010 7:00 AM

      C Offline
      C Offline
      CPallini
      wrote on last edited by
      #10

      Well, actually close to... :)

      If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
      This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
      [My articles]

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      • H Hiren solanki

        Follow the procedure click '4' click 'sqrt' click '-'(Minus sign) click '2' Answer should be 0 But It comes back with '-8.1648465955514287168521180122928e-39' answer ;P [Edit] Tested with XP and Seven _[/More Edit] Windows Server 2008 R2 comes same with yet another answer '-1.068281969439142e-19' _[/More Edit] [/Edit]

        Rating is Always appreciated.
        Regards,
        Hiren Solanki.
        Indian Forum | My Articles | My Profile


        "You will always find me near 127.0.0.1"

        modified on Monday, November 1, 2010 7:00 AM

        B Offline
        B Offline
        Bassam Abdul Baki
        wrote on last edited by
        #11

        The Windows PowerToy Calc is slightly better.

        Sqrt(4) - 2 = 3.9378992339362513964719291444358459196643504626684867133312775132667336556050866493546387304075566414818330038038295060147049046413138657775207384487209999618622897470743768272532233306387808895650314543995525529065482320548203801311885605071904357825187703782014895108614888708459734293476714554362468810447809428975260776308251921152998341440712577547187250299521717400700236027297480547576700432251758684242034663903791398932294256110257450914185948984125441052563042008394844537793781156975099171360793772881e-532

        Web - BM - RSS - Math - LinkedIn

        H 1 Reply Last reply
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        • H Hiren solanki

          Follow the procedure click '4' click 'sqrt' click '-'(Minus sign) click '2' Answer should be 0 But It comes back with '-8.1648465955514287168521180122928e-39' answer ;P [Edit] Tested with XP and Seven _[/More Edit] Windows Server 2008 R2 comes same with yet another answer '-1.068281969439142e-19' _[/More Edit] [/Edit]

          Rating is Always appreciated.
          Regards,
          Hiren Solanki.
          Indian Forum | My Articles | My Profile


          "You will always find me near 127.0.0.1"

          modified on Monday, November 1, 2010 7:00 AM

          N Offline
          N Offline
          NMehta83
          wrote on last edited by
          #12

          Follow the procedure click '4' click 'sqrt' click '-'(Minus sign) click '2' ('-8.1648465955514287168521180122928e-39') click '+' click '2' Answer should be 2 and It shows 2 only :~

          NMehta83 “We cannot fail until we fail to try”

          H L 2 Replies Last reply
          0
          • B Bassam Abdul Baki

            The Windows PowerToy Calc is slightly better.

            Sqrt(4) - 2 = 3.9378992339362513964719291444358459196643504626684867133312775132667336556050866493546387304075566414818330038038295060147049046413138657775207384487209999618622897470743768272532233306387808895650314543995525529065482320548203801311885605071904357825187703782014895108614888708459734293476714554362468810447809428975260776308251921152998341440712577547187250299521717400700236027297480547576700432251758684242034663903791398932294256110257450914185948984125441052563042008394844537793781156975099171360793772881e-532

            Web - BM - RSS - Math - LinkedIn

            H Offline
            H Offline
            Hiren solanki
            wrote on last edited by
            #13

            It's hard to give you 5 . :laugh:

            Rating is Always appreciated.
            Regards,
            Hiren Solanki.
            Indian Forum | My Articles | My Profile


            "You will always find me near 127.0.0.1"

            D B 2 Replies Last reply
            0
            • H Hiren solanki

              It's hard to give you 5 . :laugh:

              Rating is Always appreciated.
              Regards,
              Hiren Solanki.
              Indian Forum | My Articles | My Profile


              "You will always find me near 127.0.0.1"

              D Offline
              D Offline
              Dalek Dave
              wrote on last edited by
              #14

              Give him a 4.958468546513654646854968435146814612321687 instead.

              ------------------------------------ I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC League Table Link CCC Link[^]

              N 1 Reply Last reply
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              • D Dalek Dave

                Give him a 4.958468546513654646854968435146814612321687 instead.

                ------------------------------------ I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC League Table Link CCC Link[^]

                N Offline
                N Offline
                NMehta83
                wrote on last edited by
                #15

                For this answer i will give you +5 :laugh:

                NMehta83 “We cannot fail until we fail to try”

                H D 2 Replies Last reply
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                • H Hiren solanki

                  It's hard to give you 5 . :laugh:

                  Rating is Always appreciated.
                  Regards,
                  Hiren Solanki.
                  Indian Forum | My Articles | My Profile


                  "You will always find me near 127.0.0.1"

                  B Offline
                  B Offline
                  Bassam Abdul Baki
                  wrote on last edited by
                  #16

                  Clicking the 5 is hard for you?

                  Web - BM - RSS - Math - LinkedIn

                  H 1 Reply Last reply
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                  • B Bassam Abdul Baki

                    Clicking the 5 is hard for you?

                    Web - BM - RSS - Math - LinkedIn

                    H Offline
                    H Offline
                    Hiren solanki
                    wrote on last edited by
                    #17

                    It takes half and hour to reach to rating link. :laugh:

                    Rating is Always appreciated.
                    Regards,
                    Hiren Solanki.
                    Indian Forum | My Articles | My Profile


                    "You will always find me near 127.0.0.1"

                    N 1 Reply Last reply
                    0
                    • N NMehta83

                      For this answer i will give you +5 :laugh:

                      NMehta83 “We cannot fail until we fail to try”

                      D Offline
                      D Offline
                      Dalek Dave
                      wrote on last edited by
                      #18

                      Amd yet you haven't!

                      ------------------------------------ I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC League Table Link CCC Link[^]

                      N 1 Reply Last reply
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                      • H Hiren solanki

                        It takes half and hour to reach to rating link. :laugh:

                        Rating is Always appreciated.
                        Regards,
                        Hiren Solanki.
                        Indian Forum | My Articles | My Profile


                        "You will always find me near 127.0.0.1"

                        N Offline
                        N Offline
                        NMehta83
                        wrote on last edited by
                        #19

                        Now have my another +5 :laugh:

                        NMehta83 “We cannot fail until we fail to try”

                        1 Reply Last reply
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                        • N NMehta83

                          For this answer i will give you +5 :laugh:

                          NMehta83 “We cannot fail until we fail to try”

                          H Offline
                          H Offline
                          Hiren solanki
                          wrote on last edited by
                          #20

                          NMehta83 wrote:

                          i will give you +5

                          It's 10 minute already, still not deposited :laugh:

                          Rating is Always appreciated.
                          Regards,
                          Hiren Solanki.
                          Indian Forum | My Articles | My Profile


                          "You will always find me near 127.0.0.1"

                          1 Reply Last reply
                          0
                          • N NMehta83

                            Follow the procedure click '4' click 'sqrt' click '-'(Minus sign) click '2' ('-8.1648465955514287168521180122928e-39') click '+' click '2' Answer should be 2 and It shows 2 only :~

                            NMehta83 “We cannot fail until we fail to try”

                            H Offline
                            H Offline
                            Hiren solanki
                            wrote on last edited by
                            #21

                            Looks like windows support person. take a 5.

                            Rating is Always appreciated.
                            Regards,
                            Hiren Solanki.
                            Indian Forum | My Articles | My Profile


                            "You will always find me near 127.0.0.1"

                            N 1 Reply Last reply
                            0
                            • D Dalek Dave

                              Amd yet you haven't!

                              ------------------------------------ I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC League Table Link CCC Link[^]

                              N Offline
                              N Offline
                              NMehta83
                              wrote on last edited by
                              #22

                              I was laughing so i forgot...but now you can check :)

                              NMehta83 “We cannot fail until we fail to try”

                              1 Reply Last reply
                              0
                              • N NMehta83

                                Follow the procedure click '4' click 'sqrt' click '-'(Minus sign) click '2' ('-8.1648465955514287168521180122928e-39') click '+' click '2' Answer should be 2 and It shows 2 only :~

                                NMehta83 “We cannot fail until we fail to try”

                                L Offline
                                L Offline
                                leppie
                                wrote on last edited by
                                #23

                                I already said that... (but -2, same thing however).

                                ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x)))

                                1 Reply Last reply
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                                • H Hiren solanki

                                  Looks like windows support person. take a 5.

                                  Rating is Always appreciated.
                                  Regards,
                                  Hiren Solanki.
                                  Indian Forum | My Articles | My Profile


                                  "You will always find me near 127.0.0.1"

                                  N Offline
                                  N Offline
                                  NMehta83
                                  wrote on last edited by
                                  #24

                                  nah!!!!!! After your post just playing with calc and got that. :)

                                  NMehta83 “We cannot fail until we fail to try”

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                                  • D Dalek Dave

                                    Hiren Solanki wrote:

                                    Answer should be 0

                                    Or -4!

                                    ------------------------------------ I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC League Table Link CCC Link[^]

                                    K Offline
                                    K Offline
                                    Khaniya
                                    wrote on last edited by
                                    #25

                                    Dalek Dave wrote:

                                    Or -4!

                                    why DD? can you explain?

                                    Life's Like a mirror. Smile at it & it smiles back at you.- P Pilgrim So Smile Please

                                    L 1 Reply Last reply
                                    0
                                    • H Hiren solanki

                                      Follow the procedure click '4' click 'sqrt' click '-'(Minus sign) click '2' Answer should be 0 But It comes back with '-8.1648465955514287168521180122928e-39' answer ;P [Edit] Tested with XP and Seven _[/More Edit] Windows Server 2008 R2 comes same with yet another answer '-1.068281969439142e-19' _[/More Edit] [/Edit]

                                      Rating is Always appreciated.
                                      Regards,
                                      Hiren Solanki.
                                      Indian Forum | My Articles | My Profile


                                      "You will always find me near 127.0.0.1"

                                      modified on Monday, November 1, 2010 7:00 AM

                                      R Offline
                                      R Offline
                                      Rhuros
                                      wrote on last edited by
                                      #26

                                      On Windows 7 In Standard Mode you get: -1.068281969439142e-19 In Scientific Mode you get: -8.1648465955514287168521180122928e-39

                                      1 Reply Last reply
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                                      • K Khaniya

                                        Dalek Dave wrote:

                                        Or -4!

                                        why DD? can you explain?

                                        Life's Like a mirror. Smile at it & it smiles back at you.- P Pilgrim So Smile Please

                                        L Offline
                                        L Offline
                                        Lost User
                                        wrote on last edited by
                                        #27

                                        The square root of 4 is either 2 or -2. -2 - 2 = -4.

                                        Every man can tell how many goats or sheep he possesses, but not how many friends.

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                                        • L leppie

                                          Another fails the knowledge about floating point.... When will they ever learn????? Edit: It seems to happen with any rounding around 0. If your result is not 0, the result is correctly rounded, but with values very near 0, it simply 'forgets'.... Edit 2: Press = again, the answer will be -2 as expected confirming the previous value is not rounded correctly, but still good enough due to its 'smallness' (e-39 is very small).

                                          ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x)))

                                          modified on Monday, November 1, 2010 7:07 AM

                                          P Offline
                                          P Offline
                                          peterchen
                                          wrote on last edited by
                                          #28

                                          Actually, Calc internals have been replaced (around XP) with a long numbers library, so it is somehow noteworthy that this isn't enough. OTOH, the OP failed to notice tha 8e-39 is zero enough when playing around with square roots of 2.

                                          Agh! Reality! My Archnemesis![^]
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