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 c { dg-do run } c intrinsic-unix-bessel.f c c Test Bessel function intrinsics. c These functions are only available if provided by system c c David Billinghurst c real x, a double precision dx, da integer i integer(kind=2) j integer(kind=1) k integer(kind=8) m logical fail common /flags/ fail fail = .false. x = 2.0 dx = x i = 2 j = i k = i m = i c BESJ0 - Bessel function of first kind of order zero a = 0.22389077 da = a call c_r(BESJ0(x),a,'BESJ0(real)') call c_d(BESJ0(dx),da,'BESJ0(double)') call c_d(DBESJ0(dx),da,'DBESJ0(double)') c BESJ1 - Bessel function of first kind of order one a = 0.57672480 da = a call c_r(BESJ1(x),a,'BESJ1(real)') call c_d(BESJ1(dx),da,'BESJ1(double)') call c_d(DBESJ1(dx),da,'DBESJ1(double)') c BESJN - Bessel function of first kind of order N a = 0.3528340 da = a call c_r(BESJN(i,x),a,'BESJN(integer,real)') call c_r(BESJN(j,x),a,'BESJN(integer(2),real)') call c_r(BESJN(k,x),a,'BESJN(integer(1),real)') call c_d(BESJN(i,dx),da,'BESJN(integer,double)') call c_d(BESJN(j,dx),da,'BESJN(integer(2),double)') call c_d(BESJN(k,dx),da,'BESJN(integer(1),double)') call c_d(DBESJN(i,dx),da,'DBESJN(integer,double)') call c_d(DBESJN(j,dx),da,'DBESJN(integer(2),double)') call c_d(DBESJN(k,dx),da,'DBESJN(integer(1),double)') c BESY0 - Bessel function of second kind of order zero a = 0.51037567 da = a call c_r(BESY0(x),a,'BESY0(real)') call c_d(BESY0(dx),da,'BESY0(double)') call c_d(DBESY0(dx),da,'DBESY0(double)') c BESY1 - Bessel function of second kind of order one a = 0.-0.1070324 da = a call c_r(BESY1(x),a,'BESY1(real)') call c_d(BESY1(dx),da,'BESY1(double)') call c_d(DBESY1(dx),da,'DBESY1(double)') c BESYN - Bessel function of second kind of order N a = -0.6174081 da = a call c_r(BESYN(i,x),a,'BESYN(integer,real)') call c_r(BESYN(j,x),a,'BESYN(integer(2),real)') call c_r(BESYN(k,x),a,'BESYN(integer(1),real)') call c_d(BESYN(i,dx),da,'BESYN(integer,double)') call c_d(BESYN(j,dx),da,'BESYN(integer(2),double)') call c_d(BESYN(k,dx),da,'BESYN(integer(1),double)') call c_d(DBESYN(i,dx),da,'DBESYN(integer,double)') call c_d(DBESYN(j,dx),da,'DBESYN(integer(2),double)') call c_d(DBESYN(k,dx),da,'DBESYN(integer(1),double)') if ( fail ) STOP 1 end subroutine failure(label) c Report failure and set flag character*(*) label logical fail common /flags/ fail write(6,'(a,a,a)') 'Test ',label,' FAILED' fail = .true. end subroutine c_r(a,b,label) c Check if REAL a equals b, and fail otherwise real a, b character*(*) label if ( abs(a-b) .gt. 1.0e-5 ) then call failure(label) write(6,*) 'Got ',a,' expected ', b end if end subroutine c_d(a,b,label) c Check if DOUBLE PRECISION a equals b, and fail otherwise double precision a, b character*(*) label if ( abs(a-b) .gt. 1.0d-5 ) then call failure(label) write(6,*) 'Got ',a,' expected ', b end if end