Simple Big Endian / Little Endian byte order swap function.

DoubleDutch · Post by **DoubleDutch** » Mon May 24, 2021 9:24 am

This needs to be updated for the new C compiler.

jacdelad · Post by **jacdelad** » Wed Mar 08, 2023 6:29 am

The functions provided here are used in Thorsten1867's PurePDF module (http://forums.purebasic.com/german/view ... 7f#p343706). Unfortunately this makes it impossible to use it with the new C compiler. Is there an update to this?

HeX0R · Post by **HeX0R** » Wed Mar 08, 2023 11:15 am

You can also use something simple like that:

Code: Select all

Structure _SL_
	b.a[4]
EndStructure

Procedure _SwapLong(*l._SL_)
	Swap *l\b[0], *l\b[3]
	Swap *l\b[1], *l\b[2]
EndProcedure

Procedure _SwapWord(*w._SL_)
	Swap *w\b[0], *w\b[1]
EndProcedure

a = $10203040
_SwapLong(@a)
Debug Hex(a, #PB_Long)

mk-soft · Post by **mk-soft** » Wed Mar 08, 2023 1:20 pm

See link bswap32

jacdelad · Post by **jacdelad** » Wed Mar 08, 2023 1:27 pm

Ah great, thanks both of you!

AZJIO · Post by **AZJIO** » Mon Feb 19, 2024 10:36 pm

Rescator wrote: ↑Thu Mar 24, 2005 8:30 am if you need to convert to/from RGB,BGR

Code: Select all

c=$1199FF
Debug Hex(c)
c=((c & $00FF00) | ((c & $0000FF) << 16) | ((c & $FF0000) >> 16))
Debug Hex(c)

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Simple Big Endian / Little Endian byte order swap function.

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