1 files changed, 86 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/bessel_5.f90 b/gcc/testsuite/gfortran.dg/bessel_5.f90
new file mode 100644
index 000000000..aab45cafe
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/bessel_5.f90
@@ -0,0 +1,86 @@
+! { dg-do run }
+! { dg-options "-Wall -fno-range-check" }
+!
+! PR fortran/36158 - Transformational BESSEL_JN/YN
+! PR fortran/33197 - F2008 math functions
+!
+! This is a dg-do run test as the middle end cannot simplify the
+! the scalarization of the elemental function (cf. PR 45305).
+!
+! -Wall has been specified to disabled -pedantic, which warns about the
+! negative order (GNU extension) to the order of the Bessel functions of
+! first and second kind.
+!
+
+implicit none
+integer :: i
+
+
+! Difference to mpfr_jn <= 1 epsilon
+
+if (any (abs (BESSEL_JN(2, 5, 2.457) - [(BESSEL_JN(i, 2.457), i = 2, 5)]) &
+          > epsilon(0.0))) then
+  print *, 'FAIL 1'
+  call abort()
+end if
+
+
+! Difference to mpfr_yn <= 4 epsilon
+
+if (any (abs (BESSEL_YN(2, 5, 2.457) - [(BESSEL_YN(i, 2.457), i = 2, 5)]) &
+         > epsilon(0.0)*4)) then
+  call abort()
+end if
+
+
+! Difference to mpfr_jn <= 1 epsilon
+
+if (any (abs (BESSEL_JN(0, 10, 4.457) &
+              - [ (BESSEL_JN(i, 4.457), i = 0, 10) ]) &
+         > epsilon(0.0))) then
+  call abort()
+end if
+
+
+! Difference to mpfr_yn <= 192 epsilon
+
+if (any (abs (BESSEL_YN(0, 10, 4.457) &
+              - [ (BESSEL_YN(i, 4.457), i = 0, 10) ]) &
+         > epsilon(0.0)*192)) then
+  call abort()
+end if
+
+
+! Difference to mpfr_jn: None.  (Special case: X = 0.0)
+
+if (any (BESSEL_JN(0, 10, 0.0) /= [ (BESSEL_JN(i, 0.0), i = 0, 10) ])) &
+then
+  call abort()
+end if
+
+
+! Difference to mpfr_yn: None.  (Special case: X = 0.0)
+
+if (any (BESSEL_YN(0, 10, 0.0) /= [ (BESSEL_YN(i, 0.0), i = 0, 10) ])) &
+then
+  call abort()
+end if
+
+
+! Difference to mpfr_jn <= 1 epsilon
+
+if (any (abs (BESSEL_JN(0, 10, 1.0) &
+              - [ (BESSEL_JN(i, 1.0), i = 0, 10) ]) &
+         > epsilon(0.0)*1)) then
+ call abort()
+end if
+
+! Difference to mpfr_yn <= 32 epsilon
+
+if (any (abs (BESSEL_YN(0, 10, 1.0) &
+              - [ (BESSEL_YN(i, 1.0), i = 0, 10) ]) &
+         > epsilon(0.0)*32)) then
+  call abort()
+end if
+
+end