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Posted: Wed Apr 17, 2002 1:33 pm
by BackupUser
Restored from previous forum. Originally posted by tex.
Hi,
How to use the "shl" ASM instruction.
For the moment, i emulate the SHL like this: (and it's very, very slow
Code: Select all
Procedure shl(value,bit)
For x = 1 To bit
value * 2
Next
ProcedureReturn value
EndProcedure
Repeat ; debug window
a= shl (Random (10),2)
b= shl (5,8)
Delay (100)
ForEver
Thanks for your help, TEX
[url]mailto:
texmex@cybercable.fr[/url]
Posted: Wed Apr 17, 2002 2:00 pm
by BackupUser
Restored from previous forum. Originally posted by Pupil.
Hi,
How to use the "shl" ASM instruction.
For the moment, i emulate the SHL like this: (and it's very, very slow
Code: Select all
Procedure shl(value,bit)
For x = 1 To bit
value * 2
Next
ProcedureReturn value
EndProcedure
Repeat ; debug window
a= shl (Random (10),2)
b= shl (5,8)
Delay (100)
ForEver
Thanks for your help, TEX
[url]mailto:
texmex@cybercable.fr[/url]
There are easier ways, use the '>' operators.
example:
Code: Select all
a = b>3 ; shift down b 3 steps and store result in 'b'
Posted: Wed Apr 17, 2002 2:33 pm
by BackupUser
Restored from previous forum. Originally posted by tex.
great !!!
too easy
and thanks
Hi,
How to use the "shl" ASM instruction.
For the moment, i emulate the SHL like this: (and it's very, very slow
Code: Select all
Procedure shl(value,bit)
For x = 1 To bit
value * 2
Next
ProcedureReturn value
EndProcedure
Repeat ; debug window
a= shl (Random (10),2)
b= shl (5,8)
Delay (100)
ForEver
Thanks for your help, TEX
[url]mailto:
texmex@cybercable.fr[/url]
There are easier ways, use the '>' operators.
example:
Code: Select all
a = b>3 ; shift down b 3 steps and store result in 'b'
Posted: Wed Apr 17, 2002 2:42 pm
by BackupUser
Restored from previous forum. Originally posted by skypa.
And the easiest way :
Just take 'SAL' with inline Assembler. SAL is equal to SHL, only the NASM Syntax.
--
SAL EAX, 7
--
skypa
Posted: Wed Apr 17, 2002 4:35 pm
by BackupUser
Restored from previous forum. Originally posted by tex.
perhaps more speed...
thanks
And the easiest way :
Just take 'SAL' with inline Assembler. SAL is equal to SHL, only the NASM Syntax.
--
SAL EAX, 7
--
skypa
Posted: Wed Apr 17, 2002 6:14 pm
by BackupUser
Restored from previous forum. Originally posted by fred.
And THE easier way:
a*2 ; this is like a << 1 or SAL a,2 or anything.
PureBasic is an Optimizing compiler, which mean than all operations (for example this multiplication) will be changed with faster command when possible.
Fred - AlphaSND