WSJT-X/lib/softsym.f90

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Fortran
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subroutine softsym(id2,npts8,nsps8,newdat,fpk,syncpk,snrdb,xdt, &
freq,drift,a3,schk,i1SoftSymbols)
! Compute the soft symbols
Make Fortran profiling timer function a callback with a default null implementation Groundwork for calling the decoders directly from C/C++ threads. To access the timer module timer_module must now be used. Instrumented code need only use the module function 'timer' which is now a procedure pointer that is guaranteed to be associated (unless null() is assigned to it, which should not be done). The default behaviour of 'timer' is to do nothing. If a Fortran program wishes to profile code it should now use the timer_impl module which contains a default timer implementation. The main program should call 'init_timer([filename])' before using 'timer' or calling routines that are instrumented. If 'init_timer([filename])'. If it is called then an optional file name may be provided with 'timer.out' being used as a default. The procedure 'fini_timer()' may be called to close the file. The default timer implementation is thread safe if used with OpenMP multi-threaded code so long as the OpenMP thread team is given the copyin(/timer_private/) attribute for correct operation. The common block /timer_private/ should be included for OpenMP use by including the file 'timer_common.inc'. The module 'lib/timer_C_wrapper.f90' provides a Fortran wrapper along with 'init' and 'fini' subroutines which allow a C/C++ application to call timer instrumented Fortran code and for it to receive callbacks of 'timer()' subroutine invocations. No C/C++ timer implementation is provided at this stage. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6320 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-12-27 10:40:57 -05:00
use timer_module, only: timer
parameter (NZ2=1512,NZ3=1360)
complex c2(0:NZ2-1)
complex c3(0:NZ3-1)
complex c5(0:NZ3-1)
real a(3)
integer*1 i1SoftSymbolsScrambled(207)
integer*1 i1SoftSymbols(207)
include 'jt9sync.f90'
nspsd=16
ndown=nsps8/nspsd
! Mix, low-pass filter, and downsample to 16 samples per symbol
call timer('downsam9',0)
call downsam9(id2,npts8,nsps8,newdat,nspsd,fpk,c2)
call timer('downsam9',1)
call peakdt9(c2,nsps8,nspsd,c3,xdt) !Find DT
fsample=1500.0/ndown
a=0.
call timer('afc9 ',0)
call afc9(c3,nz3,fsample,a,syncpk) !Find deltaF, fDot, fDDot
call timer('afc9 ',1)
freq=fpk - a(1)
drift=-2.0*a(2)
a3=a(3)
a(3)=0.
call timer('twkfreq ',0)
call twkfreq(c3,c5,nz3,fsample,a) !Correct for delta f, f1, f2 ==> a(1:3)
call timer('twkfreq ',1)
! Compute soft symbols (in scrambled order)
call timer('symspec2',0)
call symspec2(c5,nz3,nsps8,nspsd,fsample,freq,drift,snrdb,schk, &
i1SoftSymbolsScrambled)
call timer('symspec2',1)
! Remove interleaving
call interleave9(i1SoftSymbolsScrambled,-1,i1SoftSymbols)
return
end subroutine softsym