Post by thread:AW: [PIC]:Floating point

No, it´s not floating point it´s the easy datatype "float"....for example: float number = -2000;? -----Ursprüngliche Nachricht----- Von: Reinaldo Alvares [spam_OUTreinaldoalvaresTakeThisOuTTELIA.COM] Gesendet: Donnerstag, 8. Mai 2003 15:19 An: .....PICLISTKILLspam@spam@MITVMA.MIT.EDU Betreff: Re: [PIC]:Floating point If you mean floating point, like IEEE 754 then yes.The first bit is what decides the sign. If it's set then the number is negative, if reset then the opposite. Best regards RA {Original Message removed}

At 03:21 PM 5/8/2003 +0200, you wrote: >No, it´s not floating point it´s the easy datatype "float"....for example: >float number = -2000;? If you have some kind of bastardized compiler it might be better to write: float number = -2000.; Also consider using "double". Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" speffKILLspaminterlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

At 03:46 PM 5/8/2003 +0200, you wrote: >What is an "easy datatype"? I have not the slightest; I didn't write that. I assume it's a translation of "simple" from another language than English. >What is a "bastardized compiler"? One that does not conform substantially to the ISO/IEC 9899:1999 (E) standard. The "." I suggested prevents conversions from taking place, so it matters less. >Why should it be double? There can be unholy interactions between the linked FP libraries and the data type selected, IME. Check carefully that everything is consistent. Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" .....speffKILLspam.....interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

>....voltage_HB1 and voltage_HB2 are voltages that I get from the A/D- >module. At the end I have to show the voltage on a LCD- Display. But the >display shows always the wrong value. Now, I don´t know, if the problem is >about the variable "voltage", because I don´t know what happens, if >voltage_HB2 is greater then voltage_HB1? But maybe the problem is caused by >another thing! I suspect your problem is that you are using "float" to describe the value from the ADC, when it should be "integer". If it is not properly type cast then you will end up with funny things happening. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics