WSJT-X/libm65/nchar.f90

24 lines
548 B
Fortran
Raw Normal View History

function nchar(c)
! Convert ascii number, letter, or space to 0-36 for callsign packing.
character c*1
n=0 !Silence compiler warning
if(c.ge.'0' .and. c.le.'9') then
n=ichar(c)-ichar('0')
else if(c.ge.'A' .and. c.le.'Z') then
n=ichar(c)-ichar('A') + 10
else if(c.ge.'a' .and. c.le.'z') then
n=ichar(c)-ichar('a') + 10
else if(c.ge.' ') then
n=36
else
Print*,'Invalid character in callsign ',c,' ',ichar(c)
call exit(1)
endif
nchar=n
return
end function nchar