gcc/testsuite/gfortran.dg/quad_1.f90

   1 ! { dg-do link }
   2 !
   3 ! This test checks whether the largest possible
   4 ! floating-point number works. That's usually
   5 ! REAL(16) -- either because the hardware supports it or
   6 ! because of libquadmath. However, it can also be
   7 ! REAL(10) or REAL(8)
   8 !
   9 program test_qp
  10    use iso_fortran_env, only: real_kinds
  11    implicit none
  12    integer, parameter :: QP = real_kinds(ubound(real_kinds,dim=1))
  13    real(QP), parameter :: Z1 = 1,HALF_PI = asin(Z1),PI = HALF_PI+HALF_PI
  14    real(QP) :: x = 0.124_QP
  15    complex(QP) :: z = 0.124_QP
  16    print *, 'kind = ', qp
  17    print *, x
  18    print *, PI
  19    print *, 16*atan(0.2_QP)-4*atan(Z1/239)
  20    print *, sin(PI)
  21    print *, cos(HALF_PI)
  22    print *, asinh(PI)
  23    print *, erfc(Z1)
  24    print *, epsilon(x)
  25    print *, precision(x)
  26    print *, digits(x)
  27
  28    print *, z
  29    print *, PI*cmplx(0.0_qp, 1.0_qp)
  30 ! Disable the complex functions as not all "long-double" systems have
  31 ! a libm with those C99 functions. (libquadmath had), cf. PR 46584
  32 !   print *, 16*atan(0.2_QP)-4*atan(Z1/239)
  33 !   print *, sin(z)
  34 !   print *, cos(z)
  35 !   print *, sinh(z) ! asinh not implemented in libquadmath, cf. PR 46416
  36    print *, precision(z)
  37 end program test_qp