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+c { dg-do run }
+c intrinsic-unix-erf.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
+ logical fail
+ common /flags/ fail
+ fail = .false.
+
+ x = 0.6
+ dx = x
+c ERF - error function
+ a = 0.6038561
+ da = a
+ call c_r(ERF(x),a,'ERF(real)')
+ call c_d(ERF(dx),da,'ERF(double)')
+ call c_d(DERF(dx),da,'DERF(double)')
+
+c ERFC - complementary error function
+ a = 1.0 - a
+ da = a
+ call c_r(ERFC(x),a,'ERFC(real)')
+ call c_d(ERFC(dx),da,'ERFC(double)')
+ call c_d(DERFC(dx),da,'DERFC(double)')
+
+ if ( fail ) call abort()
+ 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