1c { dg-do run } 2c intrinsic-unix-bessel.f 3c 4c Test Bessel function intrinsics. 5c These functions are only available if provided by system 6c 7c David Billinghurst <David.Billinghurst@riotinto.com> 8c 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 25c 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 32c 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 39c 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 52c 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 59c 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 66c 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 ) STOP 1 80 end 81 82 subroutine failure(label) 83c 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) 92c 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) 102c 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 110