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