| 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 <David.Billinghurst@riotinto.com> |
| 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 |
