!===-- module/iso_fortran_env_impl.f90 --=--------------------------------===!
!
! Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
! See https://llvm.org/LICENSE.txt for license information.
! SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
!
!===------------------------------------------------------------------------===!
! This MODULE implements part of the ISO_FORTRAN_ENV module file, which
! partially requires linkable symbols for some entities defined
! (e.g., real_kinds).
module iso_fortran_env_impl
implicit none
private
! INTEGER types
integer, parameter, public :: &
selectedInt8 = selected_int_kind(2), &
selectedInt16 = selected_int_kind(4), &
selectedInt32 = selected_int_kind(9), &
selectedInt64 = selected_int_kind(18),&
selectedInt128 = selected_int_kind(38), &
safeInt8 = merge(selectedInt8, selected_int_kind(0), &
selectedInt8 >= 0), &
safeInt16 = merge(selectedInt16, selected_int_kind(0), &
selectedInt16 >= 0), &
safeInt32 = merge(selectedInt32, selected_int_kind(0), &
selectedInt32 >= 0), &
safeInt64 = merge(selectedInt64, selected_int_kind(0), &
selectedInt64 >= 0), &
safeInt128 = merge(selectedInt128, selected_int_kind(0), &
selectedInt128 >= 0)
integer, parameter, public :: &
int8 = merge(selectedInt8, merge(-2, -1, selectedInt8 >= 0), &
digits(int(0,kind=safeInt8)) == 7), &
int16 = merge(selectedInt16, merge(-2, -1, selectedInt16 >= 0), &
digits(int(0,kind=safeInt16)) == 15), &
int32 = merge(selectedInt32, merge(-2, -1, selectedInt32 >= 0), &
digits(int(0,kind=safeInt32)) == 31), &
int64 = merge(selectedInt64, merge(-2, -1, selectedInt64 >= 0), &
digits(int(0,kind=safeInt64)) == 63), &
int128 = merge(selectedInt128, merge(-2, -1, selectedInt128 >= 0), &
digits(int(0,kind=safeInt128)) == 127)
integer, parameter, dimension(*), public :: __builtin_integer_kinds = [ &
selected_int_kind(0), &
[(pack([selected_int_kind(k)], &
selected_int_kind(k) >= 0 .and. &
selected_int_kind(k) /= selected_int_kind(k-1)), &
integer :: k=1, 39)]]
! LOGICAL TYPES
integer, parameter, public :: &
logical8 = int8, logical16 = int16, logical32 = int32, logical64 = int64
integer, parameter, dimension(*), public :: __builtin_logical_kinds = [ &
pack([logical8], logical8 >= 0), &
pack([logical16], logical16 >= 0), &
pack([logical32], logical32 >= 0), &
pack([logical64], logical64 >= 0) &
]
! REAL types
integer, parameter, public :: &
selectedReal16 = selected_real_kind(3, 4), & ! IEEE half
selectedBfloat16 = selected_real_kind(2, 37), & ! truncated IEEE single
selectedReal32 = selected_real_kind(6, 37), & ! IEEE single
selectedReal64 = selected_real_kind(15, 307), & ! IEEE double
selectedReal80 = selected_real_kind(18, 4931), & ! 80x87 extended
selectedReal64x2 = selected_real_kind(31, 307), & ! "double-double"
selectedReal128 = selected_real_kind(33, 4931), & ! IEEE quad
safeReal16 = merge(selectedReal16, selected_real_kind(0,0), &
selectedReal16 >= 0), &
safeBfloat16 = merge(selectedBfloat16, selected_real_kind(0,0), &
selectedBfloat16 >= 0), &
safeReal32 = merge(selectedReal32, selected_real_kind(0,0), &
selectedReal32 >= 0), &
safeReal64 = merge(selectedReal64, selected_real_kind(0,0), &
selectedReal64 >= 0), &
safeReal80 = merge(selectedReal80, selected_real_kind(0,0), &
selectedReal80 >= 0), &
safeReal64x2 = merge(selectedReal64x2, selected_real_kind(0,0), &
selectedReal64x2 >= 0), &
safeReal128 = merge(selectedReal128, selected_real_kind(0,0), &
selectedReal128 >= 0)
integer, parameter, public :: &
real16 = merge(selectedReal16, merge(-2, -1, selectedReal16 >= 0), &
digits(real(0,kind=safeReal16)) == 11), &
bfloat16 = merge(selectedBfloat16, merge(-2, -1, selectedBfloat16 >= 0), &
digits(real(0,kind=safeBfloat16)) == 8), &
real32 = merge(selectedReal32, merge(-2, -1, selectedReal32 >= 0), &
digits(real(0,kind=safeReal32)) == 24), &
real64 = merge(selectedReal64, merge(-2, -1, selectedReal64 >= 0), &
digits(real(0,kind=safeReal64)) == 53), &
real80 = merge(selectedReal80, merge(-2, -1, selectedReal80 >= 0), &
digits(real(0,kind=safeReal80)) == 64), &
real64x2 = merge(selectedReal64x2, merge(-2, -1, selectedReal64x2 >= 0), &
digits(real(0,kind=safeReal64x2)) == 106), &
real128 = merge(selectedReal128, merge(-2, -1, selectedReal128 >= 0), &
digits(real(0,kind=safeReal128)) == 113)
integer, parameter, dimension(*), public :: __builtin_real_kinds = [ &
pack([real16], real16 >= 0), &
pack([bfloat16], bfloat16 >= 0), &
pack([real32], real32 >= 0), &
pack([real64], real64 >= 0), &
pack([real80], real80 >= 0), &
pack([real64x2], real64x2 >= 0), &
pack([real128], real128 >= 0) &
]
end module iso_fortran_env_impl
Codebase Browser
llvm