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|
! Implementation of the IEEE_ARITHMETIC standard intrinsic module
! Copyright (C) 2013-2022 Free Software Foundation, Inc.
! Contributed by Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
!
! This file is part of the GNU Fortran runtime library (libgfortran).
!
! Libgfortran is free software; you can redistribute it and/or
! modify it under the terms of the GNU General Public
! License as published by the Free Software Foundation; either
! version 3 of the License, or (at your option) any later version.
!
! Libgfortran is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU General Public License for more details.
!
! Under Section 7 of GPL version 3, you are granted additional
! permissions described in the GCC Runtime Library Exception, version
! 3.1, as published by the Free Software Foundation.
!
! You should have received a copy of the GNU General Public License and
! a copy of the GCC Runtime Library Exception along with this program;
! see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
! <http://www.gnu.org/licenses/>. */
#include "config.h"
#include "kinds.inc"
#include "c99_protos.inc"
#include "fpu-target.inc"
module IEEE_ARITHMETIC
use IEEE_EXCEPTIONS
implicit none
private
! Every public symbol from IEEE_EXCEPTIONS must be made public here
public :: IEEE_FLAG_TYPE, IEEE_INVALID, IEEE_OVERFLOW, &
IEEE_DIVIDE_BY_ZERO, IEEE_UNDERFLOW, IEEE_INEXACT, IEEE_USUAL, &
IEEE_ALL, IEEE_STATUS_TYPE, IEEE_GET_FLAG, IEEE_GET_HALTING_MODE, &
IEEE_GET_STATUS, IEEE_SET_FLAG, IEEE_SET_HALTING_MODE, &
IEEE_SET_STATUS, IEEE_SUPPORT_FLAG, IEEE_SUPPORT_HALTING
! Derived types and named constants
type, public :: IEEE_CLASS_TYPE
private
integer :: hidden
end type
type(IEEE_CLASS_TYPE), parameter, public :: &
IEEE_OTHER_VALUE = IEEE_CLASS_TYPE(0), &
IEEE_SIGNALING_NAN = IEEE_CLASS_TYPE(1), &
IEEE_QUIET_NAN = IEEE_CLASS_TYPE(2), &
IEEE_NEGATIVE_INF = IEEE_CLASS_TYPE(3), &
IEEE_NEGATIVE_NORMAL = IEEE_CLASS_TYPE(4), &
IEEE_NEGATIVE_DENORMAL = IEEE_CLASS_TYPE(5), &
IEEE_NEGATIVE_SUBNORMAL= IEEE_CLASS_TYPE(5), &
IEEE_NEGATIVE_ZERO = IEEE_CLASS_TYPE(6), &
IEEE_POSITIVE_ZERO = IEEE_CLASS_TYPE(7), &
IEEE_POSITIVE_DENORMAL = IEEE_CLASS_TYPE(8), &
IEEE_POSITIVE_SUBNORMAL= IEEE_CLASS_TYPE(8), &
IEEE_POSITIVE_NORMAL = IEEE_CLASS_TYPE(9), &
IEEE_POSITIVE_INF = IEEE_CLASS_TYPE(10)
type, public :: IEEE_ROUND_TYPE
private
integer :: hidden
end type
type(IEEE_ROUND_TYPE), parameter, public :: &
IEEE_NEAREST = IEEE_ROUND_TYPE(GFC_FPE_TONEAREST), &
IEEE_TO_ZERO = IEEE_ROUND_TYPE(GFC_FPE_TOWARDZERO), &
IEEE_UP = IEEE_ROUND_TYPE(GFC_FPE_UPWARD), &
IEEE_DOWN = IEEE_ROUND_TYPE(GFC_FPE_DOWNWARD), &
IEEE_OTHER = IEEE_ROUND_TYPE(0)
! Equality operators on the derived types
! Note, the FE overloads .eq. to == and .ne. to /=
interface operator (.eq.)
module procedure IEEE_CLASS_TYPE_EQ, IEEE_ROUND_TYPE_EQ
end interface
public :: operator(.eq.)
interface operator (.ne.)
module procedure IEEE_CLASS_TYPE_NE, IEEE_ROUND_TYPE_NE
end interface
public :: operator (.ne.)
! IEEE_IS_FINITE
interface
elemental logical function _gfortran_ieee_is_finite_4(X)
real(kind=4), intent(in) :: X
end function
elemental logical function _gfortran_ieee_is_finite_8(X)
real(kind=8), intent(in) :: X
end function
#ifdef HAVE_GFC_REAL_10
elemental logical function _gfortran_ieee_is_finite_10(X)
real(kind=10), intent(in) :: X
end function
#endif
#ifdef HAVE_GFC_REAL_16
elemental logical function _gfortran_ieee_is_finite_16(X)
real(kind=16), intent(in) :: X
end function
#endif
end interface
interface IEEE_IS_FINITE
procedure &
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_is_finite_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_is_finite_10, &
#endif
_gfortran_ieee_is_finite_8, _gfortran_ieee_is_finite_4
end interface
public :: IEEE_IS_FINITE
! IEEE_IS_NAN
interface
elemental logical function _gfortran_ieee_is_nan_4(X)
real(kind=4), intent(in) :: X
end function
elemental logical function _gfortran_ieee_is_nan_8(X)
real(kind=8), intent(in) :: X
end function
#ifdef HAVE_GFC_REAL_10
elemental logical function _gfortran_ieee_is_nan_10(X)
real(kind=10), intent(in) :: X
end function
#endif
#ifdef HAVE_GFC_REAL_16
elemental logical function _gfortran_ieee_is_nan_16(X)
real(kind=16), intent(in) :: X
end function
#endif
end interface
interface IEEE_IS_NAN
procedure &
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_is_nan_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_is_nan_10, &
#endif
_gfortran_ieee_is_nan_8, _gfortran_ieee_is_nan_4
end interface
public :: IEEE_IS_NAN
! IEEE_IS_NEGATIVE
interface
elemental logical function _gfortran_ieee_is_negative_4(X)
real(kind=4), intent(in) :: X
end function
elemental logical function _gfortran_ieee_is_negative_8(X)
real(kind=8), intent(in) :: X
end function
#ifdef HAVE_GFC_REAL_10
elemental logical function _gfortran_ieee_is_negative_10(X)
real(kind=10), intent(in) :: X
end function
#endif
#ifdef HAVE_GFC_REAL_16
elemental logical function _gfortran_ieee_is_negative_16(X)
real(kind=16), intent(in) :: X
end function
#endif
end interface
interface IEEE_IS_NEGATIVE
procedure &
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_is_negative_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_is_negative_10, &
#endif
_gfortran_ieee_is_negative_8, _gfortran_ieee_is_negative_4
end interface
public :: IEEE_IS_NEGATIVE
! IEEE_IS_NORMAL
interface
elemental logical function _gfortran_ieee_is_normal_4(X)
real(kind=4), intent(in) :: X
end function
elemental logical function _gfortran_ieee_is_normal_8(X)
real(kind=8), intent(in) :: X
end function
#ifdef HAVE_GFC_REAL_10
elemental logical function _gfortran_ieee_is_normal_10(X)
real(kind=10), intent(in) :: X
end function
#endif
#ifdef HAVE_GFC_REAL_16
elemental logical function _gfortran_ieee_is_normal_16(X)
real(kind=16), intent(in) :: X
end function
#endif
end interface
interface IEEE_IS_NORMAL
procedure &
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_is_normal_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_is_normal_10, &
#endif
_gfortran_ieee_is_normal_8, _gfortran_ieee_is_normal_4
end interface
public :: IEEE_IS_NORMAL
! IEEE_COPY_SIGN
#define COPYSIGN_MACRO(A,B) \
elemental real(kind = A) function \
_gfortran_ieee_copy_sign_/**/A/**/_/**/B (X,Y) ; \
real(kind = A), intent(in) :: X ; \
real(kind = B), intent(in) :: Y ; \
end function
interface
#ifdef HAVE_GFC_REAL_16
COPYSIGN_MACRO(16,16)
#ifdef HAVE_GFC_REAL_10
COPYSIGN_MACRO(16,10)
COPYSIGN_MACRO(10,16)
#endif
COPYSIGN_MACRO(16,8)
COPYSIGN_MACRO(16,4)
COPYSIGN_MACRO(8,16)
COPYSIGN_MACRO(4,16)
#endif
#ifdef HAVE_GFC_REAL_10
COPYSIGN_MACRO(10,10)
COPYSIGN_MACRO(10,8)
COPYSIGN_MACRO(10,4)
COPYSIGN_MACRO(8,10)
COPYSIGN_MACRO(4,10)
#endif
COPYSIGN_MACRO(8,8)
COPYSIGN_MACRO(8,4)
COPYSIGN_MACRO(4,8)
COPYSIGN_MACRO(4,4)
end interface
interface IEEE_COPY_SIGN
procedure &
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_copy_sign_16_16, &
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_copy_sign_16_10, &
_gfortran_ieee_copy_sign_10_16, &
#endif
_gfortran_ieee_copy_sign_16_8, &
_gfortran_ieee_copy_sign_16_4, &
_gfortran_ieee_copy_sign_8_16, &
_gfortran_ieee_copy_sign_4_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_copy_sign_10_10, &
_gfortran_ieee_copy_sign_10_8, &
_gfortran_ieee_copy_sign_10_4, &
_gfortran_ieee_copy_sign_8_10, &
_gfortran_ieee_copy_sign_4_10, &
#endif
_gfortran_ieee_copy_sign_8_8, &
_gfortran_ieee_copy_sign_8_4, &
_gfortran_ieee_copy_sign_4_8, &
_gfortran_ieee_copy_sign_4_4
end interface
public :: IEEE_COPY_SIGN
! IEEE_UNORDERED
#define UNORDERED_MACRO(A,B) \
elemental logical function \
_gfortran_ieee_unordered_/**/A/**/_/**/B (X,Y) ; \
real(kind = A), intent(in) :: X ; \
real(kind = B), intent(in) :: Y ; \
end function
interface
#ifdef HAVE_GFC_REAL_16
UNORDERED_MACRO(16,16)
#ifdef HAVE_GFC_REAL_10
UNORDERED_MACRO(16,10)
UNORDERED_MACRO(10,16)
#endif
UNORDERED_MACRO(16,8)
UNORDERED_MACRO(16,4)
UNORDERED_MACRO(8,16)
UNORDERED_MACRO(4,16)
#endif
#ifdef HAVE_GFC_REAL_10
UNORDERED_MACRO(10,10)
UNORDERED_MACRO(10,8)
UNORDERED_MACRO(10,4)
UNORDERED_MACRO(8,10)
UNORDERED_MACRO(4,10)
#endif
UNORDERED_MACRO(8,8)
UNORDERED_MACRO(8,4)
UNORDERED_MACRO(4,8)
UNORDERED_MACRO(4,4)
end interface
interface IEEE_UNORDERED
procedure &
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_unordered_16_16, &
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_unordered_16_10, &
_gfortran_ieee_unordered_10_16, &
#endif
_gfortran_ieee_unordered_16_8, &
_gfortran_ieee_unordered_16_4, &
_gfortran_ieee_unordered_8_16, &
_gfortran_ieee_unordered_4_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_unordered_10_10, &
_gfortran_ieee_unordered_10_8, &
_gfortran_ieee_unordered_10_4, &
_gfortran_ieee_unordered_8_10, &
_gfortran_ieee_unordered_4_10, &
#endif
_gfortran_ieee_unordered_8_8, &
_gfortran_ieee_unordered_8_4, &
_gfortran_ieee_unordered_4_8, &
_gfortran_ieee_unordered_4_4
end interface
public :: IEEE_UNORDERED
! IEEE_LOGB
interface
elemental real(kind=4) function _gfortran_ieee_logb_4 (X)
real(kind=4), intent(in) :: X
end function
elemental real(kind=8) function _gfortran_ieee_logb_8 (X)
real(kind=8), intent(in) :: X
end function
#ifdef HAVE_GFC_REAL_10
elemental real(kind=10) function _gfortran_ieee_logb_10 (X)
real(kind=10), intent(in) :: X
end function
#endif
#ifdef HAVE_GFC_REAL_16
elemental real(kind=16) function _gfortran_ieee_logb_16 (X)
real(kind=16), intent(in) :: X
end function
#endif
end interface
interface IEEE_LOGB
procedure &
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_logb_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_logb_10, &
#endif
_gfortran_ieee_logb_8, &
_gfortran_ieee_logb_4
end interface
public :: IEEE_LOGB
! IEEE_NEXT_AFTER
#define NEXT_AFTER_MACRO(A,B) \
elemental real(kind = A) function \
_gfortran_ieee_next_after_/**/A/**/_/**/B (X,Y) ; \
real(kind = A), intent(in) :: X ; \
real(kind = B), intent(in) :: Y ; \
end function
interface
#ifdef HAVE_GFC_REAL_16
NEXT_AFTER_MACRO(16,16)
#ifdef HAVE_GFC_REAL_10
NEXT_AFTER_MACRO(16,10)
NEXT_AFTER_MACRO(10,16)
#endif
NEXT_AFTER_MACRO(16,8)
NEXT_AFTER_MACRO(16,4)
NEXT_AFTER_MACRO(8,16)
NEXT_AFTER_MACRO(4,16)
#endif
#ifdef HAVE_GFC_REAL_10
NEXT_AFTER_MACRO(10,10)
NEXT_AFTER_MACRO(10,8)
NEXT_AFTER_MACRO(10,4)
NEXT_AFTER_MACRO(8,10)
NEXT_AFTER_MACRO(4,10)
#endif
NEXT_AFTER_MACRO(8,8)
NEXT_AFTER_MACRO(8,4)
NEXT_AFTER_MACRO(4,8)
NEXT_AFTER_MACRO(4,4)
end interface
interface IEEE_NEXT_AFTER
procedure &
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_next_after_16_16, &
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_next_after_16_10, &
_gfortran_ieee_next_after_10_16, &
#endif
_gfortran_ieee_next_after_16_8, &
_gfortran_ieee_next_after_16_4, &
_gfortran_ieee_next_after_8_16, &
_gfortran_ieee_next_after_4_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_next_after_10_10, &
_gfortran_ieee_next_after_10_8, &
_gfortran_ieee_next_after_10_4, &
_gfortran_ieee_next_after_8_10, &
_gfortran_ieee_next_after_4_10, &
#endif
_gfortran_ieee_next_after_8_8, &
_gfortran_ieee_next_after_8_4, &
_gfortran_ieee_next_after_4_8, &
_gfortran_ieee_next_after_4_4
end interface
public :: IEEE_NEXT_AFTER
! IEEE_REM
#define REM_MACRO(RES,A,B) \
elemental real(kind = RES) function \
_gfortran_ieee_rem_/**/A/**/_/**/B (X,Y) ; \
real(kind = A), intent(in) :: X ; \
real(kind = B), intent(in) :: Y ; \
end function
interface
#ifdef HAVE_GFC_REAL_16
REM_MACRO(16,16,16)
#ifdef HAVE_GFC_REAL_10
REM_MACRO(16,16,10)
REM_MACRO(16,10,16)
#endif
REM_MACRO(16,16,8)
REM_MACRO(16,16,4)
REM_MACRO(16,8,16)
REM_MACRO(16,4,16)
#endif
#ifdef HAVE_GFC_REAL_10
REM_MACRO(10,10,10)
REM_MACRO(10,10,8)
REM_MACRO(10,10,4)
REM_MACRO(10,8,10)
REM_MACRO(10,4,10)
#endif
REM_MACRO(8,8,8)
REM_MACRO(8,8,4)
REM_MACRO(8,4,8)
REM_MACRO(4,4,4)
end interface
interface IEEE_REM
procedure &
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_rem_16_16, &
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_rem_16_10, &
_gfortran_ieee_rem_10_16, &
#endif
_gfortran_ieee_rem_16_8, &
_gfortran_ieee_rem_16_4, &
_gfortran_ieee_rem_8_16, &
_gfortran_ieee_rem_4_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_rem_10_10, &
_gfortran_ieee_rem_10_8, &
_gfortran_ieee_rem_10_4, &
_gfortran_ieee_rem_8_10, &
_gfortran_ieee_rem_4_10, &
#endif
_gfortran_ieee_rem_8_8, &
_gfortran_ieee_rem_8_4, &
_gfortran_ieee_rem_4_8, &
_gfortran_ieee_rem_4_4
end interface
public :: IEEE_REM
! IEEE_RINT
interface
elemental real(kind=4) function _gfortran_ieee_rint_4 (X)
real(kind=4), intent(in) :: X
end function
elemental real(kind=8) function _gfortran_ieee_rint_8 (X)
real(kind=8), intent(in) :: X
end function
#ifdef HAVE_GFC_REAL_10
elemental real(kind=10) function _gfortran_ieee_rint_10 (X)
real(kind=10), intent(in) :: X
end function
#endif
#ifdef HAVE_GFC_REAL_16
elemental real(kind=16) function _gfortran_ieee_rint_16 (X)
real(kind=16), intent(in) :: X
end function
#endif
end interface
interface IEEE_RINT
procedure &
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_rint_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_rint_10, &
#endif
_gfortran_ieee_rint_8, _gfortran_ieee_rint_4
end interface
public :: IEEE_RINT
! IEEE_SCALB
interface
#ifdef HAVE_GFC_INTEGER_16
#ifdef HAVE_GFC_REAL_16
elemental real(kind=16) function _gfortran_ieee_scalb_16_16 (X, I)
real(kind=16), intent(in) :: X
integer(kind=16), intent(in) :: I
end function
#endif
#ifdef HAVE_GFC_REAL_10
elemental real(kind=10) function _gfortran_ieee_scalb_10_16 (X, I)
real(kind=10), intent(in) :: X
integer(kind=16), intent(in) :: I
end function
#endif
elemental real(kind=8) function _gfortran_ieee_scalb_8_16 (X, I)
real(kind=8), intent(in) :: X
integer(kind=16), intent(in) :: I
end function
elemental real(kind=4) function _gfortran_ieee_scalb_4_16 (X, I)
real(kind=4), intent(in) :: X
integer(kind=16), intent(in) :: I
end function
#endif
#ifdef HAVE_GFC_INTEGER_8
#ifdef HAVE_GFC_REAL_16
elemental real(kind=16) function _gfortran_ieee_scalb_16_8 (X, I)
real(kind=16), intent(in) :: X
integer(kind=8), intent(in) :: I
end function
#endif
#ifdef HAVE_GFC_REAL_10
elemental real(kind=10) function _gfortran_ieee_scalb_10_8 (X, I)
real(kind=10), intent(in) :: X
integer(kind=8), intent(in) :: I
end function
#endif
elemental real(kind=8) function _gfortran_ieee_scalb_8_8 (X, I)
real(kind=8), intent(in) :: X
integer(kind=8), intent(in) :: I
end function
elemental real(kind=4) function _gfortran_ieee_scalb_4_8 (X, I)
real(kind=4), intent(in) :: X
integer(kind=8), intent(in) :: I
end function
#endif
#ifdef HAVE_GFC_INTEGER_2
#ifdef HAVE_GFC_REAL_16
elemental real(kind=16) function _gfortran_ieee_scalb_16_2 (X, I)
real(kind=16), intent(in) :: X
integer(kind=2), intent(in) :: I
end function
#endif
#ifdef HAVE_GFC_REAL_10
elemental real(kind=10) function _gfortran_ieee_scalb_10_2 (X, I)
real(kind=10), intent(in) :: X
integer(kind=2), intent(in) :: I
end function
#endif
elemental real(kind=8) function _gfortran_ieee_scalb_8_2 (X, I)
real(kind=8), intent(in) :: X
integer(kind=2), intent(in) :: I
end function
elemental real(kind=4) function _gfortran_ieee_scalb_4_2 (X, I)
real(kind=4), intent(in) :: X
integer(kind=2), intent(in) :: I
end function
#endif
#ifdef HAVE_GFC_INTEGER_1
#ifdef HAVE_GFC_REAL_16
elemental real(kind=16) function _gfortran_ieee_scalb_16_1 (X, I)
real(kind=16), intent(in) :: X
integer(kind=1), intent(in) :: I
end function
#endif
#ifdef HAVE_GFC_REAL_10
elemental real(kind=10) function _gfortran_ieee_scalb_10_1 (X, I)
real(kind=10), intent(in) :: X
integer(kind=1), intent(in) :: I
end function
#endif
elemental real(kind=8) function _gfortran_ieee_scalb_8_1 (X, I)
real(kind=8), intent(in) :: X
integer(kind=1), intent(in) :: I
end function
elemental real(kind=4) function _gfortran_ieee_scalb_4_1 (X, I)
real(kind=4), intent(in) :: X
integer(kind=1), intent(in) :: I
end function
#endif
#ifdef HAVE_GFC_REAL_16
elemental real(kind=16) function _gfortran_ieee_scalb_16_4 (X, I)
real(kind=16), intent(in) :: X
integer, intent(in) :: I
end function
#endif
#ifdef HAVE_GFC_REAL_10
elemental real(kind=10) function _gfortran_ieee_scalb_10_4 (X, I)
real(kind=10), intent(in) :: X
integer, intent(in) :: I
end function
#endif
elemental real(kind=8) function _gfortran_ieee_scalb_8_4 (X, I)
real(kind=8), intent(in) :: X
integer, intent(in) :: I
end function
elemental real(kind=4) function _gfortran_ieee_scalb_4_4 (X, I)
real(kind=4), intent(in) :: X
integer, intent(in) :: I
end function
end interface
interface IEEE_SCALB
procedure &
#ifdef HAVE_GFC_INTEGER_16
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_scalb_16_16, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_scalb_10_16, &
#endif
_gfortran_ieee_scalb_8_16, &
_gfortran_ieee_scalb_4_16, &
#endif
#ifdef HAVE_GFC_INTEGER_8
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_scalb_16_8, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_scalb_10_8, &
#endif
_gfortran_ieee_scalb_8_8, &
_gfortran_ieee_scalb_4_8, &
#endif
#ifdef HAVE_GFC_INTEGER_2
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_scalb_16_2, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_scalb_10_2, &
#endif
_gfortran_ieee_scalb_8_2, &
_gfortran_ieee_scalb_4_2, &
#endif
#ifdef HAVE_GFC_INTEGER_1
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_scalb_16_1, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_scalb_10_1, &
#endif
_gfortran_ieee_scalb_8_1, &
_gfortran_ieee_scalb_4_1, &
#endif
#ifdef HAVE_GFC_REAL_16
_gfortran_ieee_scalb_16_4, &
#endif
#ifdef HAVE_GFC_REAL_10
_gfortran_ieee_scalb_10_4, &
#endif
_gfortran_ieee_scalb_8_4, &
_gfortran_ieee_scalb_4_4
end interface
public :: IEEE_SCALB
! IEEE_VALUE
interface IEEE_VALUE
module procedure &
#ifdef HAVE_GFC_REAL_16
IEEE_VALUE_16, &
#endif
#ifdef HAVE_GFC_REAL_10
IEEE_VALUE_10, &
#endif
IEEE_VALUE_8, IEEE_VALUE_4
end interface
public :: IEEE_VALUE
! IEEE_CLASS
interface IEEE_CLASS
module procedure &
#ifdef HAVE_GFC_REAL_16
IEEE_CLASS_16, &
#endif
#ifdef HAVE_GFC_REAL_10
IEEE_CLASS_10, &
#endif
IEEE_CLASS_8, IEEE_CLASS_4
end interface
public :: IEEE_CLASS
! Public declarations for contained procedures
public :: IEEE_GET_ROUNDING_MODE, IEEE_SET_ROUNDING_MODE
public :: IEEE_GET_UNDERFLOW_MODE, IEEE_SET_UNDERFLOW_MODE
public :: IEEE_SELECTED_REAL_KIND
! IEEE_SUPPORT_ROUNDING
interface IEEE_SUPPORT_ROUNDING
module procedure IEEE_SUPPORT_ROUNDING_4, IEEE_SUPPORT_ROUNDING_8, &
#ifdef HAVE_GFC_REAL_10
IEEE_SUPPORT_ROUNDING_10, &
#endif
#ifdef HAVE_GFC_REAL_16
IEEE_SUPPORT_ROUNDING_16, &
#endif
IEEE_SUPPORT_ROUNDING_NOARG
end interface
public :: IEEE_SUPPORT_ROUNDING
! Interface to the FPU-specific function
interface
pure integer function support_rounding_helper(flag) &
bind(c, name="_gfortrani_support_fpu_rounding_mode")
integer, intent(in), value :: flag
end function
end interface
! IEEE_SUPPORT_UNDERFLOW_CONTROL
interface IEEE_SUPPORT_UNDERFLOW_CONTROL
module procedure IEEE_SUPPORT_UNDERFLOW_CONTROL_4, &
IEEE_SUPPORT_UNDERFLOW_CONTROL_8, &
#ifdef HAVE_GFC_REAL_10
IEEE_SUPPORT_UNDERFLOW_CONTROL_10, &
#endif
#ifdef HAVE_GFC_REAL_16
IEEE_SUPPORT_UNDERFLOW_CONTROL_16, &
#endif
IEEE_SUPPORT_UNDERFLOW_CONTROL_NOARG
end interface
public :: IEEE_SUPPORT_UNDERFLOW_CONTROL
! Interface to the FPU-specific function
interface
pure integer function support_underflow_control_helper(kind) &
bind(c, name="_gfortrani_support_fpu_underflow_control")
integer, intent(in), value :: kind
end function
end interface
! IEEE_SUPPORT_* generic functions
#if defined(HAVE_GFC_REAL_10) && defined(HAVE_GFC_REAL_16)
# define MACRO1(NAME) NAME/**/_4, NAME/**/_8, NAME/**/_10, NAME/**/_16, NAME/**/_NOARG
#elif defined(HAVE_GFC_REAL_10)
# define MACRO1(NAME) NAME/**/_4, NAME/**/_8, NAME/**/_10, NAME/**/_NOARG
#elif defined(HAVE_GFC_REAL_16)
# define MACRO1(NAME) NAME/**/_4, NAME/**/_8, NAME/**/_16, NAME/**/_NOARG
#else
# define MACRO1(NAME) NAME/**/_4, NAME/**/_8, NAME/**/_NOARG
#endif
#define SUPPORTGENERIC(NAME) \
interface NAME ; module procedure MACRO1(NAME) ; end interface ; \
public :: NAME
SUPPORTGENERIC(IEEE_SUPPORT_DATATYPE)
SUPPORTGENERIC(IEEE_SUPPORT_DENORMAL)
SUPPORTGENERIC(IEEE_SUPPORT_SUBNORMAL)
SUPPORTGENERIC(IEEE_SUPPORT_DIVIDE)
SUPPORTGENERIC(IEEE_SUPPORT_INF)
SUPPORTGENERIC(IEEE_SUPPORT_IO)
SUPPORTGENERIC(IEEE_SUPPORT_NAN)
SUPPORTGENERIC(IEEE_SUPPORT_SQRT)
SUPPORTGENERIC(IEEE_SUPPORT_STANDARD)
contains
! Equality operators for IEEE_CLASS_TYPE and IEEE_ROUNDING_MODE
elemental logical function IEEE_CLASS_TYPE_EQ (X, Y) result(res)
implicit none
type(IEEE_CLASS_TYPE), intent(in) :: X, Y
res = (X%hidden == Y%hidden)
end function
elemental logical function IEEE_CLASS_TYPE_NE (X, Y) result(res)
implicit none
type(IEEE_CLASS_TYPE), intent(in) :: X, Y
res = (X%hidden /= Y%hidden)
end function
elemental logical function IEEE_ROUND_TYPE_EQ (X, Y) result(res)
implicit none
type(IEEE_ROUND_TYPE), intent(in) :: X, Y
res = (X%hidden == Y%hidden)
end function
elemental logical function IEEE_ROUND_TYPE_NE (X, Y) result(res)
implicit none
type(IEEE_ROUND_TYPE), intent(in) :: X, Y
res = (X%hidden /= Y%hidden)
end function
! IEEE_SELECTED_REAL_KIND
integer function IEEE_SELECTED_REAL_KIND (P, R, RADIX) result(res)
implicit none
integer, intent(in), optional :: P, R, RADIX
! Currently, if IEEE is supported and this module is built, it means
! all our floating-point types conform to IEEE. Hence, we simply call
! SELECTED_REAL_KIND.
res = SELECTED_REAL_KIND (P, R, RADIX)
end function
! IEEE_CLASS
elemental function IEEE_CLASS_4 (X) result(res)
implicit none
real(kind=4), intent(in) :: X
type(IEEE_CLASS_TYPE) :: res
interface
pure integer function _gfortrani_ieee_class_helper_4(val)
real(kind=4), intent(in) :: val
end function
end interface
res = IEEE_CLASS_TYPE(_gfortrani_ieee_class_helper_4(X))
end function
elemental function IEEE_CLASS_8 (X) result(res)
implicit none
real(kind=8), intent(in) :: X
type(IEEE_CLASS_TYPE) :: res
interface
pure integer function _gfortrani_ieee_class_helper_8(val)
real(kind=8), intent(in) :: val
end function
end interface
res = IEEE_CLASS_TYPE(_gfortrani_ieee_class_helper_8(X))
end function
#ifdef HAVE_GFC_REAL_10
elemental function IEEE_CLASS_10 (X) result(res)
implicit none
real(kind=10), intent(in) :: X
type(IEEE_CLASS_TYPE) :: res
interface
pure integer function _gfortrani_ieee_class_helper_10(val)
real(kind=10), intent(in) :: val
end function
end interface
res = IEEE_CLASS_TYPE(_gfortrani_ieee_class_helper_10(X))
end function
#endif
#ifdef HAVE_GFC_REAL_16
elemental function IEEE_CLASS_16 (X) result(res)
implicit none
real(kind=16), intent(in) :: X
type(IEEE_CLASS_TYPE) :: res
interface
pure integer function _gfortrani_ieee_class_helper_16(val)
real(kind=16), intent(in) :: val
end function
end interface
res = IEEE_CLASS_TYPE(_gfortrani_ieee_class_helper_16(X))
end function
#endif
! IEEE_VALUE
elemental real(kind=4) function IEEE_VALUE_4(X, CLASS) result(res)
real(kind=4), intent(in) :: X
type(IEEE_CLASS_TYPE), intent(in) :: CLASS
interface
pure real(kind=4) function _gfortrani_ieee_value_helper_4(x)
use ISO_C_BINDING, only: C_INT
integer(kind=C_INT), value :: x
end function
end interface
res = _gfortrani_ieee_value_helper_4(CLASS%hidden)
end function
elemental real(kind=8) function IEEE_VALUE_8(X, CLASS) result(res)
real(kind=8), intent(in) :: X
type(IEEE_CLASS_TYPE), intent(in) :: CLASS
interface
pure real(kind=8) function _gfortrani_ieee_value_helper_8(x)
use ISO_C_BINDING, only: C_INT
integer(kind=C_INT), value :: x
end function
end interface
res = _gfortrani_ieee_value_helper_8(CLASS%hidden)
end function
#ifdef HAVE_GFC_REAL_10
elemental real(kind=10) function IEEE_VALUE_10(X, CLASS) result(res)
real(kind=10), intent(in) :: X
type(IEEE_CLASS_TYPE), intent(in) :: CLASS
interface
pure real(kind=10) function _gfortrani_ieee_value_helper_10(x)
use ISO_C_BINDING, only: C_INT
integer(kind=C_INT), value :: x
end function
end interface
res = _gfortrani_ieee_value_helper_10(CLASS%hidden)
end function
#endif
#ifdef HAVE_GFC_REAL_16
elemental real(kind=16) function IEEE_VALUE_16(X, CLASS) result(res)
real(kind=16), intent(in) :: X
type(IEEE_CLASS_TYPE), intent(in) :: CLASS
interface
pure real(kind=16) function _gfortrani_ieee_value_helper_16(x)
use ISO_C_BINDING, only: C_INT
integer(kind=C_INT), value :: x
end function
end interface
res = _gfortrani_ieee_value_helper_16(CLASS%hidden)
end function
#endif
! IEEE_GET_ROUNDING_MODE
subroutine IEEE_GET_ROUNDING_MODE (ROUND_VALUE)
implicit none
type(IEEE_ROUND_TYPE), intent(out) :: ROUND_VALUE
interface
integer function helper() &
bind(c, name="_gfortrani_get_fpu_rounding_mode")
end function
end interface
ROUND_VALUE = IEEE_ROUND_TYPE(helper())
end subroutine
! IEEE_SET_ROUNDING_MODE
subroutine IEEE_SET_ROUNDING_MODE (ROUND_VALUE)
implicit none
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
interface
subroutine helper(val) &
bind(c, name="_gfortrani_set_fpu_rounding_mode")
integer, value :: val
end subroutine
end interface
call helper(ROUND_VALUE%hidden)
end subroutine
! IEEE_GET_UNDERFLOW_MODE
subroutine IEEE_GET_UNDERFLOW_MODE (GRADUAL)
implicit none
logical, intent(out) :: GRADUAL
interface
integer function helper() &
bind(c, name="_gfortrani_get_fpu_underflow_mode")
end function
end interface
GRADUAL = (helper() /= 0)
end subroutine
! IEEE_SET_UNDERFLOW_MODE
subroutine IEEE_SET_UNDERFLOW_MODE (GRADUAL)
implicit none
logical, intent(in) :: GRADUAL
interface
subroutine helper(val) &
bind(c, name="_gfortrani_set_fpu_underflow_mode")
integer, value :: val
end subroutine
end interface
call helper(merge(1, 0, GRADUAL))
end subroutine
! IEEE_SUPPORT_ROUNDING
pure logical function IEEE_SUPPORT_ROUNDING_4 (ROUND_VALUE, X) result(res)
implicit none
real(kind=4), intent(in) :: X
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
res = (support_rounding_helper(ROUND_VALUE%hidden) /= 0)
end function
pure logical function IEEE_SUPPORT_ROUNDING_8 (ROUND_VALUE, X) result(res)
implicit none
real(kind=8), intent(in) :: X
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
res = (support_rounding_helper(ROUND_VALUE%hidden) /= 0)
end function
#ifdef HAVE_GFC_REAL_10
pure logical function IEEE_SUPPORT_ROUNDING_10 (ROUND_VALUE, X) result(res)
implicit none
real(kind=10), intent(in) :: X
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
res = (support_rounding_helper(ROUND_VALUE%hidden) /= 0)
end function
#endif
#ifdef HAVE_GFC_REAL_16
pure logical function IEEE_SUPPORT_ROUNDING_16 (ROUND_VALUE, X) result(res)
implicit none
real(kind=16), intent(in) :: X
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
res = (support_rounding_helper(ROUND_VALUE%hidden) /= 0)
end function
#endif
pure logical function IEEE_SUPPORT_ROUNDING_NOARG (ROUND_VALUE) result(res)
implicit none
type(IEEE_ROUND_TYPE), intent(in) :: ROUND_VALUE
res = (support_rounding_helper(ROUND_VALUE%hidden) /= 0)
end function
! IEEE_SUPPORT_UNDERFLOW_CONTROL
pure logical function IEEE_SUPPORT_UNDERFLOW_CONTROL_4 (X) result(res)
implicit none
real(kind=4), intent(in) :: X
res = (support_underflow_control_helper(4) /= 0)
end function
pure logical function IEEE_SUPPORT_UNDERFLOW_CONTROL_8 (X) result(res)
implicit none
real(kind=8), intent(in) :: X
res = (support_underflow_control_helper(8) /= 0)
end function
#ifdef HAVE_GFC_REAL_10
pure logical function IEEE_SUPPORT_UNDERFLOW_CONTROL_10 (X) result(res)
implicit none
real(kind=10), intent(in) :: X
res = (support_underflow_control_helper(10) /= 0)
end function
#endif
#ifdef HAVE_GFC_REAL_16
pure logical function IEEE_SUPPORT_UNDERFLOW_CONTROL_16 (X) result(res)
implicit none
real(kind=16), intent(in) :: X
res = (support_underflow_control_helper(16) /= 0)
end function
#endif
pure logical function IEEE_SUPPORT_UNDERFLOW_CONTROL_NOARG () result(res)
implicit none
res = (support_underflow_control_helper(4) /= 0 &
.and. support_underflow_control_helper(8) /= 0 &
#ifdef HAVE_GFC_REAL_10
.and. support_underflow_control_helper(10) /= 0 &
#endif
#ifdef HAVE_GFC_REAL_16
.and. support_underflow_control_helper(16) /= 0 &
#endif
)
end function
! IEEE_SUPPORT_* functions
#define SUPPORTMACRO(NAME, INTKIND, VALUE) \
pure logical function NAME/**/_/**/INTKIND (X) result(res) ; \
implicit none ; \
real(INTKIND), intent(in) :: X(..) ; \
res = VALUE ; \
end function
#define SUPPORTMACRO_NOARG(NAME, VALUE) \
pure logical function NAME/**/_NOARG () result(res) ; \
implicit none ; \
res = VALUE ; \
end function
! IEEE_SUPPORT_DATATYPE
SUPPORTMACRO(IEEE_SUPPORT_DATATYPE,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_DATATYPE,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_DATATYPE,10,.true.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_DATATYPE,16,.true.)
#endif
SUPPORTMACRO_NOARG(IEEE_SUPPORT_DATATYPE,.true.)
! IEEE_SUPPORT_DENORMAL and IEEE_SUPPORT_SUBNORMAL
SUPPORTMACRO(IEEE_SUPPORT_DENORMAL,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_DENORMAL,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_DENORMAL,10,.true.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_DENORMAL,16,.true.)
#endif
SUPPORTMACRO_NOARG(IEEE_SUPPORT_DENORMAL,.true.)
SUPPORTMACRO(IEEE_SUPPORT_SUBNORMAL,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_SUBNORMAL,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_SUBNORMAL,10,.true.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_SUBNORMAL,16,.true.)
#endif
SUPPORTMACRO_NOARG(IEEE_SUPPORT_SUBNORMAL,.true.)
! IEEE_SUPPORT_DIVIDE
SUPPORTMACRO(IEEE_SUPPORT_DIVIDE,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_DIVIDE,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_DIVIDE,10,.true.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_DIVIDE,16,.true.)
#endif
SUPPORTMACRO_NOARG(IEEE_SUPPORT_DIVIDE,.true.)
! IEEE_SUPPORT_INF
SUPPORTMACRO(IEEE_SUPPORT_INF,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_INF,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_INF,10,.true.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_INF,16,.true.)
#endif
SUPPORTMACRO_NOARG(IEEE_SUPPORT_INF,.true.)
! IEEE_SUPPORT_IO
SUPPORTMACRO(IEEE_SUPPORT_IO,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_IO,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_IO,10,.true.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_IO,16,.true.)
#endif
SUPPORTMACRO_NOARG(IEEE_SUPPORT_IO,.true.)
! IEEE_SUPPORT_NAN
SUPPORTMACRO(IEEE_SUPPORT_NAN,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_NAN,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_NAN,10,.true.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_NAN,16,.true.)
#endif
SUPPORTMACRO_NOARG(IEEE_SUPPORT_NAN,.true.)
! IEEE_SUPPORT_SQRT
SUPPORTMACRO(IEEE_SUPPORT_SQRT,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_SQRT,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_SQRT,10,.true.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_SQRT,16,.true.)
#endif
SUPPORTMACRO_NOARG(IEEE_SUPPORT_SQRT,.true.)
! IEEE_SUPPORT_STANDARD
SUPPORTMACRO(IEEE_SUPPORT_STANDARD,4,.true.)
SUPPORTMACRO(IEEE_SUPPORT_STANDARD,8,.true.)
#ifdef HAVE_GFC_REAL_10
SUPPORTMACRO(IEEE_SUPPORT_STANDARD,10,.true.)
#endif
#ifdef HAVE_GFC_REAL_16
SUPPORTMACRO(IEEE_SUPPORT_STANDARD,16,.true.)
#endif
SUPPORTMACRO_NOARG(IEEE_SUPPORT_STANDARD,.true.)
end module IEEE_ARITHMETIC
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