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59 lines
1.3 KiB
Fortran
59 lines
1.3 KiB
Fortran
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program free_text
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character*13 c13,w
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character*71 f71
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character*42 c
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character*1 qa(10),qb(10)
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data c/' 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ+-./?'/
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c13='TNX BOB 73 GL' !Redefine as needed
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call mp_short_init
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qa=char(0)
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w=adjustr(c13)
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do i=1,13
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j=index(c,w(i:i))-1
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if(j.lt.0) j=0
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call mp_short_mult(qb,qa(2:10),9,42) !qb(1:9)=42*qa(2:9)
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call mp_short_add(qa,qb(2:10),9,j) !qa(1:9)=qb(2:9)+j
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enddo
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write(f71,1000) qa(2:10)
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1000 format(b7.7,8b8.8)
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write(*,1010) c13,f71
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1010 format('Free text: ',a13/'f71: ',a71)
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end program free_text
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subroutine mp_short_ops(w,u)
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! Multi-precision arithmetic with storage in character arrays.
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character*1 w(*),u(*)
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integer i,ireg,j,n,ir,iv,ii1,ii2
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character*1 creg(4)
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save ii1,ii2
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equivalence (ireg,creg)
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entry mp_short_init
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ireg=256*ichar('2')+ichar('1')
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do j=1,4
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if (creg(j).eq.'1') ii1=j
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if (creg(j).eq.'2') ii2=j
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enddo
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return
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entry mp_short_add(w,u,n,iv)
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ireg=256*iv
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do j=n,1,-1
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ireg=ichar(u(j))+ichar(creg(ii2))
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w(j+1)=creg(ii1)
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enddo
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w(1)=creg(ii2)
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return
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entry mp_short_mult(w,u,n,iv)
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ireg=0
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do j=n,1,-1
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ireg=ichar(u(j))*iv+ichar(creg(ii2))
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w(j+1)=creg(ii1)
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enddo
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w(1)=creg(ii2)
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return
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return
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end subroutine mp_short_ops
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