1. ?? shift left
- Posted by Bernie Ryan <xotron at localnet.com> May 13, 2001
- 360 views
Quoting the library reference : "There are no routines for shifting bits left or right, but you can achieve the same effect by multiplying or dividing by powers of 2." These are my examples : 1: 5 shifted-left 2 is equal to 20 2: 7 shifted-left 16 is equal to 458752 Now how can you do this with the power() function ?? Bernie
2. Re: ?? shift left
- Posted by Jeffrey Fielding <jjprog at earthlink.net> May 13, 2001
- 373 views
5 * power(2, 2) = 20 7 * power(2, 16) = 458752 so to shift x left by p, use x * power(2, p) and to shift x right by p, use x / power(2, p) Jeff Fielding ----- Original Message ----- From: "Bernie Ryan" <xotron at localnet.com> To: "EUforum" <EUforum at topica.com> Subject: ?? shift left > > > > Quoting the library reference : > > "There are no routines for shifting bits left or right, > but you can achieve the same effect by multiplying or dividing > by powers of 2." > > > These are my examples : > 1: 5 shifted-left 2 is equal to 20 > 2: 7 shifted-left 16 is equal to 458752 > > Now how can you do this with the power() function ?? > > Bernie > > > >
3. Re: ?? shift left
- Posted by Derek Parnell <ddparnell at bigpond.com> May 14, 2001
- 356 views
Something like ... function shift_bits(integer x, integer steps) return x * power(2, -steps) end function where -ve steps move bits to the left, and +ve to the right. ------ Derek Parnell Melbourne, Australia "To finish a job quickly, go slower." ----- Original Message ----- From: "Chris Bensler" <bensler at mailops.com> To: <EUforum at topica.com> Sent: Monday, May 14, 2001 10:46 PM Subject: RE: ?? shift left > > How about just shift_bits(x,steps) > step could positive or negative.. > > Chris > > stabmaster_ at HOTMAIL.COM wrote: > > How about shl_bits(x, steps) and shr_bits(x, steps) in v. 2.3 ? Or > > perhaps > > it should be sal/sar since euphoria integers are signed.. > >