Post by thread:[OT] Multiply by 1???

Hmmm. Is it something in the syntax of the language you're using, relatted to an exponential? Perhaps a means of setting a flag? A multiply by one would cause the zero flag to trip if A = 0... ??? Mike H. On 2/20/06, John Pearson <spam_OUTxeroTakeThisOuTcmc.net> wrote: > I have an equation that multiplies by 1: > > 1 * A^ .3241 > > Is there any reason I have to multiply be 1? Just trying to save a little program space and execution time. > > Thanks > > John > -

At 08:40 AM 2/20/2006 -0800, you wrote: >I have an equation that multiplies by 1: > >1 * A^ .3241 > >Is there any reason I have to multiply be 1? Just trying to save a little >program space and execution time. > >Thanks > >John More context might help. Where are you getting the equation from? How are you implementing it? In any case, multiplying a floating point number by 1 will probably not do anything, and even if the optimizer isn't smart enough to get rid of it entirely, it won't likely use much time or room, especially compared to that nasty x^y function (assuming A is a variable so it cannot be pre-computed). >Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" .....speffKILLspam@spam@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com ->> Inexpensive test equipment & parts http://search.ebay.com/_W0QQsassZspeff

only if it's a large or small value for one. ; ) Spehro Pefhany wrote: {Quote hidden}> At 08:40 AM 2/20/2006 -0800, you wrote: > >> I have an equation that multiplies by 1: >> >> 1 * A^ .3241 >> >> Is there any reason I have to multiply be 1? Just trying to save a little >> program space and execution time. >> >> Thanks >> >> John >> > > More context might help. Where are you getting the equation from? How are > you implementing it? In any case, multiplying a floating point number by > 1 will probably not do anything, and even if the optimizer isn't smart > enough to get rid of it entirely, it won't likely use much time or room, > especially compared to that nasty x^y function (assuming A is a variable > so it cannot be pre-computed). > > >> 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 > ->> Inexpensive test equipment & parts http://search.ebay.com/_W0QQsassZspeff > > >