gcc/testsuite/g77.f-torture/execute/intrinsic-unix-bessel.f

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