1&| does work, actually. And, if you want an offset of -1 on that result when the original value was negative, you can use (1&| - 0&>)
Thanks, -- Raul On Sun, Aug 6, 2017 at 3:19 AM, Martin Kreuzer <i...@airkreuzer.com> wrote: > In easy steps (and for further reference) ... > > From these test data (two floats, two integers, different signs), to get the > fractional parts > > v=. 2.25 _8.11 16 _3 > > simply taking the Residue (when dividing by 1) doesn't work (error at > negative float position) > > 1|v > 0.25 0.89 0 0 > > So first get Magnitude > > | v > 2.25 8.11 16 3 > > then take Residue > > 1 | (| v) > 0.25 0.11 0 0 > > then get the sign right (see Raul's remark below) > > (*v) * (1 | | v) > 0.25 _0.11 0 0 > > and put it as verb (fp), written as a fork > > fp=. * * 1|| > fp v > 0.25 _0.11 0 0 > > -M > > > At 2017-08-06 02:14, you wrote: > >> Eh... but that's wrong. You can't add any integer to 0.542857 to get >> _0.542857. >> >> If you want signed fractions, you'd need something like (*@] * (| |)) >> >> Thanks, >> >> -- >> Raul >> >> >> On Sat, Aug 5, 2017 at 10:01 PM, 'Pascal Jasmin' via Programming >> <programm...@jsoftware.com> wrote: >> > combining other answers we get the cute: >> >> > 1 (| |) _0.542857 _1.1875 1.96552 2.92308 4.13043 5.7 7.82353 10.8571 >> > 15.5455 23.75 >> >> >> >> >> > ________________________________ >> > From: Bill <bbill....@gmail.com> >> > To: "programm...@jsoftware.com" <programm...@jsoftware.com> >> > Sent: Saturday, August 5, 2017 8:30 PM >> > Subject: Re: [Jprogramming] Fractional parts >> >> >> >> > this also depends on what do you expect for negative numbers. >> >> > Sent from my iPhone >> >> > On 6 Aug, 2017, at 7:35 AM, Skip Cave <s...@caveconsulting.com> wrote: >> >> >> Oops! i meant: >> >> >> >> How does one find the fractional parts of a vector of floating point >> >> numbers? >> >> >> >> 0.542857 1.1875 1.96552 2.92308 4.13043 5.7 7.82353 10.8571 15.5455 >> >> 23.75 >> >> 41.8 114 247 >> >> >> >> i want: >> >> 0.542857 0.1875 0.96552 0.92308 0.13043 0.7 0.82353 0.8571 5.5455 0.75 >> >> 0.8 >> >> 0 0 >> >> >> >> (Last two integers have zero fractional part.) >> >> >> >> >> >> Skip Cave >> >> Cave Consulting LLC >> >> >> >> On Sat, Aug 5, 2017 at 6:30 PM, Skip Cave <s...@caveconsulting.com> >> >> wrote: >> >> >> >>> How does one find the fractional parts of a vector of floating point >> >>> numbers? >> >>> >> >>> 0.542857 1.1875 1.96552 2.92308 4.13043 5.7 7.82353 10.8571 15.5455 >> >>> 23.75 >> >>> 41.8 114 247 >> >>> >> >>> i want: >> >>> 0.542857 0.1875 0.96552 0.92308 0.13043 0.7 0.82353 0.8571 5.5455 0.75 >> >>> 0.8 >> >>> 114 247 >> >>> >> >>> Skip >> >>> >> >>> Skip Cave >> >>> Cave Consulting LLC >> >> ---------------------------------------------------------------------- >> >> For information about J forums see http://www.jsoftware.com/forums.htm >> >> > ---------------------------------------------------------------------- >> > For information about J forums see http://www.jsoftware.com/forums.htm >> > ---------------------------------------------------------------------- >> > For information about J forums see http://www.jsoftware.com/forums.htm >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
