gcc/testsuite/gfortran.dg/gamma_1.f90

   1 ! { dg-do run }
   2 !
   3 ! Test the vendor intrinsic (d)gamma, lgamma and algama/dlgama
   4 ! gamma is also part of the Fortran 2008 draft; lgamma is called
   5 ! log_gamma in the Fortran 2008 draft.
   6 !
   7 ! PR fortran/32980
   8 !
   9 program gamma_test
  10 implicit none
  11 intrinsic :: gamma, lgamma, log_gamma
  12 integer, parameter :: sp = kind(1.0)
  13 integer, parameter :: dp = kind(1.0d0)
  14
  15 real(sp) :: rsp
  16 real(dp) :: rdp
  17
  18 if (abs(gamma(1.0_sp)  - 1.0_sp) > tiny(1.0_sp)) STOP 1
  19 if (abs(gamma(1.0_dp)  - 1.0_dp) > tiny(1.0_dp)) STOP 2
  20 if (abs(dgamma(1.0_dp) - 1.0_dp) > tiny(1.0_dp)) STOP 3
  21
  22 if (abs(lgamma(1.0_sp)) > tiny(1.0_sp)) STOP 4
  23 if (abs(lgamma(1.0_dp)) > tiny(1.0_dp)) STOP 5
  24 if (abs(log_gamma(1.0_sp)) > tiny(1.0_sp)) STOP 6
  25 if (abs(log_gamma(1.0_dp)) > tiny(1.0_dp)) STOP 7
  26 if (abs(algama(1.0_sp)) > tiny(1.0_sp)) STOP 8
  27 if (abs(dlgama(1.0_dp)) > tiny(1.0_dp)) STOP 9
  28 end program gamma_test
  29