How do you set to Double Precision mode for 34S? - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: Not HP Calculators (/forum-7.html) +--- Forum: Not quite HP Calculators - but related (/forum-8.html) +--- Thread: How do you set to Double Precision mode for 34S? (/thread-7598.html) How do you set to Double Precision mode for 34S? - zeno333 - 01-16-2017 02:10 AM How do you set the 34S to Double Precision mode...I know its probably in the documentation, but cant seem to find it. RE: How do you set to Double Precision mode for 34S? - Paul Dale - 01-16-2017 03:35 AM In the MODE catalogue. Press D and you'll get to DBLOFF, you want DBLON which is immediately below. Pauli RE: How do you set to Double Precision mode for 34S? - zeno333 - 01-16-2017 04:15 AM (01-16-2017 03:35 AM)Paul Dale Wrote:  In the MODE catalogue. Press D and you'll get to DBLOFF, you want DBLON which is immediately below. Pauli OK, when you get there, how do you invoke that feature...? RE: How do you set to Double Precision mode for 34S? - Dieter - 01-16-2017 06:46 AM (01-16-2017 04:15 AM)zeno333 Wrote:  OK, when you get there, how do you invoke that feature...? As usual: press ENTER or XEQ. Dieter RE: How do you set to Double Precision mode for 34S? - Paul Dale - 01-16-2017 08:25 AM Perhaps you need the manual - Pauli RE: How do you set to Double Precision mode for 34S? - Leonid - 01-16-2017 04:49 PM BTW there is no way to programmatically displays the 18 trailing digits in DP mode? RE: How do you set to Double Precision mode for 34S? - Paul Dale - 01-16-2017 09:37 PM I'm sure a program could be written to display the extra digits: To get the second 12 digits: set round to zero mode, round to 12 digits, subtract from the original number. Do this again to get the final 10 digits. Pauli RE: How do you set to Double Precision mode for 34S? - Dieter - 01-17-2017 08:36 PM (01-16-2017 09:37 PM)Paul Dale Wrote:  To get the second 12 digits: set round to zero mode, "Round to zero" is round mode 4, i.e. truncation (instead of the standard mode 0 that rounds to even). The round mode is set by the RM command which is part of the MODE menu. (01-16-2017 09:37 PM)Paul Dale Wrote:  round to 12 digits, Round to 12 significant digits. This is accomplished by the RSD command that can be found in the X.FCN menu. (01-16-2017 09:37 PM)Paul Dale Wrote:  subtract from the original number. Yes. ;-) So all in all it's a procedure like this: Code: ```RM 4                                  // set round mode to truncation [SCI] 11                              // always show 12 significant digits 17 [1/X]         5,88235294118 E-2    // 1/17 rounded 12-digit display precision [ENTER] RSD 12   5,88235294117 E-2    // first 12 digits [-]              6,47058823529 E-14 [ENTER] RSD 12   6,47058823529 E-14   // next 12 digits [-]              4,11764705800 E-26   // last 10 digits RM 0                                  // reset standard round mode``` Dieter