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configury: test Fortran complex(real16) #13265

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configury: test Fortran complex(real16) #13265

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16 changes: 16 additions & 0 deletions config/ompi_fortran_check_iso_fortran_env_real16.m4
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,22 @@ end program]])],
[AS_VAR_SET(iso_fortran_env_var_real16, no)])
AC_LANG_POP([Fortran])
])
AS_VAR_IF(iso_fortran_env_var_real16, [yes],
[AC_MSG_CHECKING([if Fortran compiler supports complex(ISO_FORTRAN_ENV:REAL16)])
AC_LANG_PUSH([Fortran])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[program check_for_iso_fortran_env_real16
use, intrinsic :: iso_fortran_env
complex(REAL16) :: var
var = 12.34
end program]])],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
AC_MSG_WARN([*** Fortran compiler supports real(REAL16) but])
AC_MSG_WARN([*** does *not* support complex(REAL16)])
AC_MSG_WARN([*** Disabling support for ISO_FORTRAN_ENV:REAL16])
AS_VAR_SET(iso_fortran_env_var_real16, no)])
AC_LANG_POP([Fortran])],
[])

AS_VAR_IF(iso_fortran_env_var_real16, [yes], [$1], [$2])
AS_VAR_POPDEF([iso_fortran_env_var_real16])
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