mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2025-11-03 13:30:52 -05:00
d9d9047cb0
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@3299 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
23 lines
481 B
Fortran
23 lines
481 B
Fortran
subroutine unpackbits(sym,nsymd,m0,dbits)
|
|
|
|
! Unpack bits from sym() into dbits(), one bit per byte.
|
|
! NB: nsymd is the number of input words, and m0 their length.
|
|
! there will be m0*nsymd output bytes, each 0 or 1.
|
|
|
|
integer sym(nsymd)
|
|
integer*1 dbits(*)
|
|
|
|
k=0
|
|
do i=1,nsymd
|
|
mask=ishft(1,m0-1)
|
|
do j=1,m0
|
|
k=k+1
|
|
dbits(k)=0
|
|
if(iand(mask,sym(i)).ne.0) dbits(k)=1
|
|
mask=ishft(mask,-1)
|
|
enddo
|
|
enddo
|
|
|
|
return
|
|
end subroutine unpackbits
|