gcc/testsuite/gfortran.dg/g77/intrinsic-unix-bessel.f

   1 c { dg-do run }
   2 c  intrinsic-unix-bessel.f
   3 c
   4 c Test Bessel function intrinsics.
   5 c These functions are only available if provided by system
   6 c
   7 c     David Billinghurst <David.Billinghurst@riotinto.com>
   8 c
   9       real x, a
  10       double precision dx, da
  11       integer i
  12       integer(kind=2) j
  13       integer(kind=1) k
  14       integer(kind=8) m
  15       logical fail
  16       common /flags/ fail
  17       fail = .false.
  18
  19       x = 2.0
  20       dx = x
  21       i = 2
  22       j = i
  23       k = i
  24       m = i
  25 c     BESJ0  - Bessel function of first kind of order zero
  26       a = 0.22389077
  27       da = a
  28       call c_r(BESJ0(x),a,'BESJ0(real)')
  29       call c_d(BESJ0(dx),da,'BESJ0(double)')
  30       call c_d(DBESJ0(dx),da,'DBESJ0(double)')
  31
  32 c     BESJ1  - Bessel function of first kind of order one
  33       a = 0.57672480
  34       da = a
  35       call c_r(BESJ1(x),a,'BESJ1(real)')
  36       call c_d(BESJ1(dx),da,'BESJ1(double)')
  37       call c_d(DBESJ1(dx),da,'DBESJ1(double)')
  38
  39 c     BESJN  - Bessel function of first kind of order N
  40       a = 0.3528340
  41       da = a
  42       call c_r(BESJN(i,x),a,'BESJN(integer,real)')
  43       call c_r(BESJN(j,x),a,'BESJN(integer(2),real)')
  44       call c_r(BESJN(k,x),a,'BESJN(integer(1),real)')
  45       call c_d(BESJN(i,dx),da,'BESJN(integer,double)')
  46       call c_d(BESJN(j,dx),da,'BESJN(integer(2),double)')
  47       call c_d(BESJN(k,dx),da,'BESJN(integer(1),double)')
  48       call c_d(DBESJN(i,dx),da,'DBESJN(integer,double)')
  49       call c_d(DBESJN(j,dx),da,'DBESJN(integer(2),double)')
  50       call c_d(DBESJN(k,dx),da,'DBESJN(integer(1),double)')
  51
  52 c     BESY0  - Bessel function of second kind of order zero
  53       a = 0.51037567
  54       da = a
  55       call c_r(BESY0(x),a,'BESY0(real)')
  56       call c_d(BESY0(dx),da,'BESY0(double)')
  57       call c_d(DBESY0(dx),da,'DBESY0(double)')
  58
  59 c     BESY1  - Bessel function of second kind of order one
  60       a = 0.-0.1070324
  61       da = a
  62       call c_r(BESY1(x),a,'BESY1(real)')
  63       call c_d(BESY1(dx),da,'BESY1(double)')
  64       call c_d(DBESY1(dx),da,'DBESY1(double)')
  65
  66 c     BESYN  - Bessel function of second kind of order N
  67       a = -0.6174081
  68       da = a
  69       call c_r(BESYN(i,x),a,'BESYN(integer,real)')
  70       call c_r(BESYN(j,x),a,'BESYN(integer(2),real)')
  71       call c_r(BESYN(k,x),a,'BESYN(integer(1),real)')
  72       call c_d(BESYN(i,dx),da,'BESYN(integer,double)')
  73       call c_d(BESYN(j,dx),da,'BESYN(integer(2),double)')
  74       call c_d(BESYN(k,dx),da,'BESYN(integer(1),double)')
  75       call c_d(DBESYN(i,dx),da,'DBESYN(integer,double)')
  76       call c_d(DBESYN(j,dx),da,'DBESYN(integer(2),double)')
  77       call c_d(DBESYN(k,dx),da,'DBESYN(integer(1),double)')
  78
  79       if ( fail ) call abort()
  80       end
  81
  82       subroutine failure(label)
  83 c     Report failure and set flag
  84       character*(*) label
  85       logical fail
  86       common /flags/ fail
  87       write(6,'(a,a,a)') 'Test ',label,' FAILED'
  88       fail = .true.
  89       end
  90
  91       subroutine c_r(a,b,label)
  92 c     Check if REAL a equals b, and fail otherwise
  93       real a, b
  94       character*(*) label
  95       if ( abs(a-b) .gt. 1.0e-5 ) then
  96          call failure(label)
  97          write(6,*) 'Got ',a,' expected ', b
  98       end if
  99       end
 100
 101       subroutine c_d(a,b,label)
 102 c     Check if DOUBLE PRECISION a equals b, and fail otherwise
 103       double precision a, b
 104       character*(*) label
 105       if ( abs(a-b) .gt. 1.0d-5 ) then
 106          call failure(label)
 107          write(6,*) 'Got ',a,' expected ', b
 108       end if
 109       end